Files
obscura/crates/obscura-js/src/runtime.rs
2026-08-03 13:35:09 +00:00

8337 lines
336 KiB
Rust

use std::cell::RefCell;
use std::collections::HashMap;
use std::rc::Rc;
use deno_core::{JsRuntime, RuntimeOptions};
use obscura_dom::{DomTree, NodeId};
/// Re-exported so other crates (obscura-browser, obscura-cdp) can name the V8
/// isolate handle without taking a direct dependency on deno_core.
pub use deno_core::v8::IsolateHandle;
use crate::import_map::ImportMap;
use crate::module_loader::ObscuraModuleLoader;
#[cfg(feature = "render")]
use crate::ops::{clamp_scroll_offset, document_base_url, ensure_prepared_render};
use crate::ops::{
build_extension, node_is_script, ObscuraState, StoredNetworkResponseBody,
};
static SNAPSHOT: &[u8] = include_bytes!(env!("OBSCURA_SNAPSHOT_PATH"));
/// Serializes V8 isolate construction across OS threads. The thread-per-
/// connection server (issue #430) builds isolates on many threads. The main
/// thread already warms up V8 once before any connection thread starts (see the
/// `ObscuraJsRuntime::new` warmup in `obscura-cdp` server startup), which is
/// what actually prevents the `InitializeBuiltinJSDispatchTable` segfault of a
/// first isolate built off the main thread. This lock is defense-in-depth: it
/// keeps two connections from running V8's isolate setup concurrently in case
/// any residual first-time process init races. Construction is rare and fast, so
/// serializing it costs nothing measurable; isolate *execution* stays fully
/// parallel, each isolate on its own thread with no shared lock.
static ISOLATE_CREATE_LOCK: std::sync::Mutex<()> = std::sync::Mutex::new(());
#[derive(Debug, Clone)]
pub struct RemoteObjectInfo {
pub js_type: String,
pub subtype: Option<String>,
pub class_name: String,
pub description: String,
pub object_id: Option<String>,
pub value: Option<serde_json::Value>,
}
pub struct ObscuraJsRuntime {
runtime: JsRuntime,
state: Rc<RefCell<ObscuraState>>,
object_store: HashMap<String, String>,
object_counter: u64,
import_map: Rc<RefCell<ImportMap>>,
/// Thread-safe handle to this runtime's V8 isolate, captured at
/// construction. Lets a watchdog be armed from `&self` (the CDP dispatcher
/// only holds `&Page` on the hot path) and is stable for the isolate's life.
isolate_handle: IsolateHandle,
}
/// A fetched and instantiated module graph whose evaluation is intentionally
/// delayed until the HTML script scheduler reaches its post-parse turn.
pub struct PreparedModule {
module_id: deno_core::ModuleId,
description: String,
}
/// Handle to an armed V8 execution watchdog (see [`ObscuraJsRuntime::arm_watchdog`]).
/// Holds the cancel channel and the watchdog thread; pass it back to
/// `disarm_watchdog` to stop the watchdog and learn whether it fired.
pub struct WatchdogToken {
pair: std::sync::Arc<(std::sync::Mutex<bool>, std::sync::Condvar)>,
join: Option<std::thread::JoinHandle<()>>,
fired: std::sync::Arc<std::sync::atomic::AtomicBool>,
}
/// Arm a V8 termination watchdog directly from an isolate handle, with no
/// runtime borrow. The CDP dispatcher uses this to bound every command so a
/// hung page cannot hold this connection's V8 lock forever. Pair with
/// [`WatchdogToken::stop`]; if `stop` returns true, clear the termination flag
/// via [`ObscuraJsRuntime::cancel_termination`] before reusing the isolate.
pub fn spawn_watchdog(handle: IsolateHandle, budget: std::time::Duration) -> WatchdogToken {
let pair = std::sync::Arc::new((std::sync::Mutex::new(false), std::sync::Condvar::new()));
let fired = std::sync::Arc::new(std::sync::atomic::AtomicBool::new(false));
let pair_c = pair.clone();
let fired_c = fired.clone();
let join = std::thread::spawn(move || {
let (lock, cvar) = &*pair_c;
let mut cancelled = lock.lock().unwrap();
let deadline = std::time::Instant::now() + budget;
loop {
// Check first: stop() may have set this (and notified into the void)
// before this thread even started, which happens constantly for fast
// CDP commands where stop() is called right after spawn. Without this
// top check the lost notify means we wait the full budget before
// noticing, and stop()'s join() blocks for that whole time.
if *cancelled {
return;
}
let remaining = deadline.saturating_duration_since(std::time::Instant::now());
if remaining.is_zero() {
fired_c.store(true, std::sync::atomic::Ordering::SeqCst);
handle.terminate_execution();
return;
}
let (guard, _) = cvar.wait_timeout(cancelled, remaining).unwrap();
cancelled = guard;
if *cancelled {
return;
}
}
});
WatchdogToken { pair, join: Some(join), fired }
}
impl WatchdogToken {
/// Stop the watchdog. Returns true if it had already fired (terminated the
/// isolate). The caller must then clear the termination flag via
/// [`ObscuraJsRuntime::cancel_termination`] before the next eval.
pub fn stop(mut self) -> bool {
{
let (lock, cvar) = &*self.pair;
*lock.lock().unwrap() = true;
cvar.notify_one();
}
if let Some(j) = self.join.take() {
let _ = j.join();
}
self.fired.load(std::sync::atomic::Ordering::SeqCst)
}
}
impl ObscuraJsRuntime {
pub fn new() -> Self {
Self::with_base_url("about:blank")
}
pub fn with_base_url(base_url: &str) -> Self {
Self::with_base_url_and_proxy(base_url, None)
}
/// Construct a runtime whose ES-module loader routes dynamic imports
/// through `proxy_url` (#139). `None` is equivalent to `with_base_url`
/// (direct connection).
pub fn with_base_url_and_proxy(base_url: &str, proxy_url: Option<String>) -> Self {
let state = Rc::new(RefCell::new(ObscuraState::new()));
let state_clone = state.clone();
let import_map = state.borrow().import_map.clone();
let module_loader = Rc::new(ObscuraModuleLoader::with_page_state(
base_url, proxy_url, &state, import_map.clone(),
));
// Build the isolate under the process-wide creation lock so two
// connection threads never construct isolates concurrently (#430).
let (runtime, isolate_handle) = {
let _create_guard = ISOLATE_CREATE_LOCK
.lock()
.unwrap_or_else(|poisoned| poisoned.into_inner());
let mut runtime = JsRuntime::new(RuntimeOptions {
extensions: vec![build_extension()],
module_loader: Some(module_loader),
startup_snapshot: Some(SNAPSHOT),
..Default::default()
});
runtime.op_state().borrow_mut().put(state_clone);
runtime
.execute_script(
"<obscura:init>",
"globalThis.__obscura_objects = {}; globalThis.__obscura_oid = 0;".to_string(),
)
.expect("init should not fail");
let isolate_handle = runtime.v8_isolate().thread_safe_handle();
(runtime, isolate_handle)
};
ObscuraJsRuntime {
runtime,
state,
object_store: HashMap::new(),
object_counter: 0,
import_map,
isolate_handle,
}
}
/// Parse and merge an inline document import map. Rules which would alter
/// already-observed module resolutions are discarded while unrelated new
/// rules remain available, matching Chromium's multiple-map model.
pub fn add_import_map(&self, source: &str, base_url: &str) -> Result<(), String> {
let map = ImportMap::parse(source, base_url)?;
self.import_map
.try_borrow_mut()
.map_err(|_| "Import map is already borrowed".to_string())?
.merge(map);
Ok(())
}
pub fn set_cookie_jar(&self, jar: std::sync::Arc<obscura_net::CookieJar>) {
self.state.borrow_mut().cookie_jar = Some(jar);
}
pub fn set_http_client(&self, client: std::sync::Arc<obscura_net::ObscuraHttpClient>) {
self.state.borrow_mut().http_client = Some(client);
}
/// Install the owning page's passive on_request/on_response callback
/// registry so scripted fetch()/XHR observation is page-scoped (issue #408).
pub fn set_callbacks(&self, callbacks: std::sync::Arc<obscura_net::CallbackRegistry>) {
self.state.borrow_mut().callbacks = Some(callbacks);
}
/// Install the stealth (wreq) HTTP client so scripted fetch()/XHR is routed
/// through it in stealth mode (see op_fetch_url / stealth_fetch_all).
#[cfg(feature = "stealth")]
pub fn set_stealth_client(&self, client: std::sync::Arc<obscura_net::StealthHttpClient>) {
self.state.borrow_mut().stealth_client = Some(client);
}
pub fn set_dom(&self, dom: DomTree) {
let mut gs = self.state.borrow_mut();
gs.dom = Some(dom);
gs.already_started_scripts.borrow_mut().clear();
// A new document owns a fresh retained scene and resource cache.
#[cfg(feature = "render")]
{
gs.prepared_render = None;
gs.render_resources = obscura_render::RenderResourceCache::default();
gs.dynamic_fonts.clear();
gs.scroll_offset = (0.0, 0.0);
}
}
pub fn set_url(&self, url: &str) {
let mut state = self.state.borrow_mut();
if state.url != url {
state.url = url.to_string();
#[cfg(feature = "render")]
{
// Relative resources use the document URL when no <base> is
// present. Keep already-fetched absolute bytes, but rebuild
// candidate selection/layout against the new base.
state.prepared_render = None;
}
}
}
/// Set the document's character encoding (WHATWG canonical name). Backs
/// `document.characterSet` and the `<a>`/`<area>` URL query encoding
/// override for legacy-charset documents.
pub fn set_encoding(&self, encoding: &str) {
self.state.borrow_mut().encoding = encoding.to_string();
}
pub fn set_title(&self, title: &str) {
self.state.borrow_mut().title = title.to_string();
}
pub fn set_blocked_urls(&self, patterns: Vec<String>) {
self.state.borrow_mut().blocked_urls = patterns;
}
pub fn take_pending_navigation(&self) -> Option<(String, String, String)> {
self.state.borrow_mut().pending_navigation.take()
}
pub fn take_pending_binding_calls(&self) -> Vec<(String, String)> {
std::mem::take(&mut self.state.borrow_mut().pending_binding_calls)
}
pub fn get_network_response_body(&self, request_id: &str) -> Option<StoredNetworkResponseBody> {
self.state.borrow().network_response_bodies.get(request_id).cloned()
}
pub fn clear_network_response_bodies(&self) {
let mut state = self.state.borrow_mut();
state.network_response_bodies.clear();
state.network_response_body_order.clear();
}
/// Wire up the interception channel without enabling interception.
/// Use set_intercept_enabled separately. The two were entangled before
/// and every navigation auto-enabled interception, which made
/// `fetch()` from page JS hang forever waiting for a CDP client to
/// answer Fetch.requestPaused events that the client never asked for.
pub fn set_intercept_tx(&self, tx: tokio::sync::mpsc::UnboundedSender<crate::ops::InterceptedRequest>) {
let mut state = self.state.borrow_mut();
state.intercept_tx = Some(tx);
}
pub fn set_intercept_enabled(&self, enabled: bool) {
let mut state = self.state.borrow_mut();
state.intercept_enabled = enabled;
}
pub fn set_user_agent(&mut self, ua: &str) {
let escaped = ua.replace('\\', "\\\\").replace('\'', "\\'");
let _ = self.runtime.execute_script(
"<set-ua>",
format!("globalThis.__obscura_ua = '{}';", escaped),
);
}
pub fn set_platform(&mut self, platform: &str, ua_platform: &str, ua_platform_version: &str) {
let p = platform.replace('\'', "\\'");
let uap = ua_platform.replace('\'', "\\'");
let uapv = ua_platform_version.replace('\'', "\\'");
let _ = self.runtime.execute_script(
"<set-platform>",
format!(
"globalThis.__obscura_platform='{}';globalThis.__obscura_ua_platform='{}';globalThis.__obscura_ua_platform_version='{}';",
p, uap, uapv
),
);
}
pub fn set_stealth(&mut self, enabled: bool) {
let _ = self.runtime.execute_script(
"<set-stealth>",
format!("globalThis.__obscura_stealth = {};", enabled),
);
}
/// Set the CSS viewport exposed to page JavaScript. This must run before
/// `run_page_init` for navigation-time responsive code; it may also be
/// called later by CDP emulation to update the live window surfaces.
pub fn set_viewport(&mut self, width: f64, height: f64) {
if !width.is_finite() || !height.is_finite() || width <= 0.0 || height <= 0.0 {
return;
}
#[cfg(feature = "render")]
{
let mut state = self.state.borrow_mut();
state.viewport = (width as f32, height as f32);
state.prepared_render = None;
}
let _ = self.runtime.execute_script(
"<set-viewport>",
format!(
"globalThis.__obscura_viewport_w={width};\
globalThis.__obscura_viewport_h={height};\
globalThis.innerWidth={width};globalThis.innerHeight={height};\
if(globalThis.visualViewport){{\
globalThis.visualViewport.width={width};\
globalThis.visualViewport.height={height};\
}}\
if(typeof globalThis.__obscura_recompute_intersections==='function'){{\
globalThis.__obscura_recompute_intersections();\
}}",
),
);
}
/// Current clamped root scroll offset shared by CSSOM geometry and paint.
#[cfg(feature = "render")]
pub fn scroll_offset(&self) -> (f32, f32) {
let mut state = self.state.borrow_mut();
let requested = state.scroll_offset;
clamp_scroll_offset(&mut state, requested)
}
/// Capture the live render viewport from the same prepared layout used by
/// CSSOM geometry. A mismatched ad-hoc viewport/base returns `None` so the
/// browser layer can retain its compatibility one-shot path.
#[cfg(feature = "render")]
pub fn screenshot_prepared(
&self,
viewport: (f32, f32),
base_url: Option<&str>,
) -> Option<Vec<u8>> {
let mut state = self.state.borrow_mut();
let effective_base = document_base_url(&state);
if viewport != state.viewport || base_url != effective_base.as_deref() {
return None;
}
ensure_prepared_render(&mut state)?;
let requested = state.scroll_offset;
let scroll = state
.prepared_render
.as_ref()
.map(|prepared| prepared.clamp_scroll(requested))?;
state.scroll_offset = scroll;
let ObscuraState {
dom,
prepared_render,
render_resources,
..
} = &mut *state;
obscura_render::screenshot_prepared(
dom.as_ref()?,
prepared_render.as_mut()?,
render_resources,
scroll,
)
}
/// Run __obscura_init() after all per-page properties (UA, platform, stealth, etc.)
/// have been set. Must be called once per page setup, after all set_* methods.
pub fn run_page_init(&mut self) {
let _ = self.runtime.execute_script(
"<obscura:page-init>",
"globalThis.__obscura_init();".to_string(),
);
}
/// Override the coordinates the navigator.geolocation shim reports. The
/// values are injected as numeric globals the bootstrap reads; when unset it
/// keeps the built-in default. Callers validate the range before calling.
pub fn set_geolocation(&mut self, latitude: f64, longitude: f64) {
let _ = self.runtime.execute_script(
"<set-geo>",
format!(
"globalThis.__obscura_geo_lat={};globalThis.__obscura_geo_lon={};",
latitude, longitude
),
);
}
pub fn evaluate(&mut self, expression: &str) -> Result<serde_json::Value, String> {
let wrapped = Self::wrap_expression(expression);
let result = self
.runtime
.execute_script("<eval>", wrapped)
.map_err(|e| format!("JS error: {}", e))?;
self.v8_to_json(result)
}
pub async fn evaluate_for_cdp(
&mut self,
expression: &str,
return_by_value: bool,
await_promise: bool,
) -> Result<RemoteObjectInfo, String> {
if !await_promise && return_by_value {
let val = self.evaluate(expression)?;
return Ok(Self::info_from_json(&val));
}
self.object_counter += 1;
let oid = self.make_oid(self.object_counter);
// Same trailing-semicolon trim as wrap_expression — Playwright's
// utility-script eval ends with `})();`, and `({expr})` would
// otherwise become `(...;)` which is a parse-time SyntaxError.
let cleaned_expr = expression
.trim()
.trim_end_matches(|c: char| c == ';' || c.is_whitespace());
// Puppeteer / Playwright bundles end with a `//# sourceURL=...`
// line comment. If we put `{expr})` on a single line the comment
// swallows the closing paren and our wrapper breaks. A newline
// before the `)` terminates any trailing line comment so the
// parens close on their own line.
let done_counter = self.object_counter;
let meta_code = if await_promise {
format!(
"(async function() {{\n\
try {{\n\
var __result = await (\n{expr}\n);\n\
globalThis.__obscura_objects['{oid}'] = __result;\n\
globalThis.__obscura_await_meta = {meta_fn};\n\
globalThis.__obscura_await_rejected = false;\n\
}} catch(e) {{\n\
globalThis.__obscura_objects['{oid}'] = e;\n\
globalThis.__obscura_await_meta = {err_meta_fn};\n\
globalThis.__obscura_await_rejected = true;\n\
}}\n\
globalThis.__obscura_done_{done_counter} = true;\n\
}})()",
expr = cleaned_expr,
oid = oid,
meta_fn = Self::meta_extract_js("__result"),
err_meta_fn = Self::meta_extract_js("e"),
done_counter = done_counter,
)
} else {
format!(
"(function() {{\n\
var __result;\n\
try {{ __result = (\n{expr}\n); }} catch(e) {{ __result = undefined; }}\n\
globalThis.__obscura_objects['{oid}'] = __result;\n\
return {meta_fn};\n\
}})()",
expr = cleaned_expr,
oid = oid,
meta_fn = Self::meta_extract_js("__result"),
)
};
let result = self
.runtime
.execute_script("<eval-remote>", meta_code)
.map_err(|e| format!("JS error: {}", e))?;
let meta_str = if await_promise {
let __t0 = std::time::Instant::now();
let sentinel = format!("globalThis.__obscura_done_{done_counter} === true");
self.resolve_promises_until(
|rt| rt.runtime.execute_script("<done?>", sentinel.clone())
.ok()
.and_then(|v| rt.v8_to_json(v).ok())
.and_then(|j| j.as_bool())
.unwrap_or(false),
5000,
).await;
let __dt = __t0.elapsed();
if __dt > std::time::Duration::from_secs(1) {
let preview: String = expression
.chars()
.take(200)
.map(|c| if c == '\n' || c == '\t' { ' ' } else { c })
.collect();
tracing::debug!(
"Runtime.evaluate awaitPromise took {}ms; expr={}",
__dt.as_millis(), preview,
);
}
let rejected = self.runtime.execute_script("<readRejected>", "globalThis.__obscura_await_rejected".to_string())
.map_err(|e| format!("JS error: {}", e))?;
if self.v8_to_json(rejected)?.as_bool().unwrap_or(false) {
let err = self.runtime.execute_script("<readError>", format!("String(globalThis.__obscura_objects['{0}'] && (globalThis.__obscura_objects['{0}'].message || globalThis.__obscura_objects['{0}']))", oid))
.map_err(|e| format!("JS error: {}", e))?;
return Err(format!("Promise rejected: {}", self.v8_to_json(err)?.as_str().unwrap_or("")));
}
self.runtime.execute_script("<readMeta>", "globalThis.__obscura_await_meta".to_string())
.map_err(|e| format!("JS error: {}", e))?
} else {
result
};
let meta_str = self.v8_to_json(meta_str)?;
let meta_json = if let serde_json::Value::String(s) = &meta_str {
serde_json::from_str(s).unwrap_or(meta_str)
} else {
meta_str
};
self.object_store.insert(
oid.clone(),
format!("globalThis.__obscura_objects['{}']", oid),
);
if await_promise && return_by_value {
let read = self.runtime.execute_script("<readResult>", format!("globalThis.__obscura_objects['{}']", oid))
.map_err(|e| format!("JS error: {}", e))?;
let json_val = self.v8_to_json(read)?;
return Ok(Self::info_from_json(&json_val));
}
Ok(Self::info_from_meta(&meta_json, Some(oid)))
}
pub async fn call_function_on_for_cdp(
&mut self,
function_declaration: &str,
object_id: Option<&str>,
arguments: &[serde_json::Value],
return_by_value: bool,
await_promise: bool,
) -> Result<RemoteObjectInfo, String> {
let this_expr = self.resolve_this(object_id);
let (setup, args_list) = self.build_args(arguments);
self.object_counter += 1;
let oid = self.make_oid(self.object_counter);
if await_promise {
let done_counter = self.object_counter;
let err_meta_fn = Self::meta_extract_js("__result");
let code = format!(
"(async function() {{\n\
{setup}\n\
var __fn = ({fn_decl});\n\
var __this = ({this_expr});\n\
var __result;\n\
try {{\n\
__result = await __fn.call(__this, {args});\n\
globalThis.__obscura_objects['{oid}'] = __result;\n\
globalThis.__obscura_await_meta = {meta_fn};\n\
}} catch(e) {{\n\
__result = e;\n\
globalThis.__obscura_objects['{oid}'] = e;\n\
globalThis.__obscura_await_meta = {err_meta_fn};\n\
}} finally {{\n\
globalThis.__obscura_done_{done_counter} = true;\n\
}}\n\
}})()",
setup = setup,
fn_decl = function_declaration,
this_expr = this_expr,
args = args_list,
oid = oid,
meta_fn = Self::meta_extract_js("__result"),
err_meta_fn = err_meta_fn,
done_counter = done_counter,
);
self.runtime
.execute_script("<callFnAsync>", code)
.map_err(|e| format!("JS error: {}", e))?;
let __t0 = std::time::Instant::now();
let sentinel = format!("globalThis.__obscura_done_{done_counter} === true");
self.resolve_promises_until(
|rt| rt.runtime.execute_script("<done?>", sentinel.clone())
.ok()
.and_then(|v| rt.v8_to_json(v).ok())
.and_then(|j| j.as_bool())
.unwrap_or(false),
5000,
).await;
let __dt = __t0.elapsed();
if __dt > std::time::Duration::from_secs(1) {
let preview: String = function_declaration
.chars()
.take(300)
.map(|c| if c == '\n' || c == '\t' { ' ' } else { c })
.collect();
tracing::debug!(
"Runtime.callFunctionOn awaitPromise took {}ms; fn={}",
__dt.as_millis(), preview,
);
}
if return_by_value {
let read = self.runtime.execute_script(
"<readResult>",
format!("globalThis.__obscura_objects['{}']", oid),
).map_err(|e| format!("JS error: {}", e))?;
let json_val = self.v8_to_json(read)?;
return Ok(Self::info_from_json(&json_val));
}
let meta_result = self.runtime.execute_script(
"<readMeta>",
"globalThis.__obscura_await_meta".to_string(),
).map_err(|e| format!("JS error: {}", e))?;
let meta_str = self.v8_to_json(meta_result)?;
let meta_json = if let serde_json::Value::String(s) = &meta_str {
serde_json::from_str(s).unwrap_or(meta_str.clone())
} else {
meta_str
};
self.object_store.insert(
oid.clone(),
format!("globalThis.__obscura_objects['{}']", oid),
);
return Ok(Self::info_from_meta(&meta_json, Some(oid)));
}
if return_by_value {
let code = format!(
"(function() {{\n\
{setup}\n\
var __fn = ({fn_decl});\n\
var __this = ({this_expr});\n\
return __fn.call(__this, {args});\n\
}})()",
setup = setup,
fn_decl = function_declaration,
this_expr = this_expr,
args = args_list,
);
let result = self.runtime
.execute_script("<callFnByValue>", code)
.map_err(|e| format!("JS error: {}", e))?;
let json_val = self.v8_to_json(result)?;
return Ok(Self::info_from_json(&json_val));
}
let code = format!(
"(function() {{\n\
{setup}\n\
var __fn = ({fn_decl});\n\
var __this = ({this_expr});\n\
var __result = __fn.call(__this, {args});\n\
globalThis.__obscura_objects['{oid}'] = __result;\n\
return {meta_fn};\n\
}})()",
setup = setup,
fn_decl = function_declaration,
this_expr = this_expr,
args = args_list,
oid = oid,
meta_fn = Self::meta_extract_js("__result"),
);
let result = self.runtime
.execute_script("<callFnRemote>", code)
.map_err(|e| format!("JS error: {}", e))?;
let meta_str = self.v8_to_json(result)?;
let meta_json = if let serde_json::Value::String(s) = &meta_str {
serde_json::from_str(s).unwrap_or(meta_str.clone())
} else {
meta_str
};
self.object_store.insert(
oid.clone(),
format!("globalThis.__obscura_objects['{}']", oid),
);
Ok(Self::info_from_meta(&meta_json, Some(oid)))
}
pub async fn call_function_on(
&mut self,
function_declaration: &str,
object_id: Option<&str>,
arguments: &[serde_json::Value],
return_by_value: bool,
) -> Result<RemoteObjectInfo, String> {
self.call_function_on_for_cdp(function_declaration, object_id, arguments, return_by_value, false).await
}
pub fn store_object(&mut self, js_expression: &str) -> Result<String, String> {
self.object_counter += 1;
let oid = self.make_oid(self.object_counter);
let code = format!(
"globalThis.__obscura_objects['{}'] = ({});",
oid, js_expression,
);
self.runtime
.execute_script("<store>", code)
.map_err(|e| format!("Store error: {}", e))?;
self.object_store.insert(
oid.clone(),
format!("globalThis.__obscura_objects['{}']", oid),
);
Ok(oid)
}
pub fn store_object_with_meta(
&mut self,
js_expression: &str,
) -> Result<RemoteObjectInfo, String> {
self.object_counter += 1;
let oid = self.make_oid(self.object_counter);
let code = format!(
"(function() {{\n\
var __result = (\n{expr}\n);\n\
globalThis.__obscura_objects['{oid}'] = __result;\n\
return {meta_fn};\n\
}})()",
expr = js_expression,
oid = oid,
meta_fn = Self::meta_extract_js("__result"),
);
let result = self
.runtime
.execute_script("<store-meta>", code)
.map_err(|e| format!("Store error: {}", e))?;
let meta_str = self.v8_to_json(result)?;
let meta_json = if let serde_json::Value::String(s) = &meta_str {
serde_json::from_str(s).unwrap_or(meta_str.clone())
} else {
meta_str
};
self.object_store.insert(
oid.clone(),
format!("globalThis.__obscura_objects['{}']", oid),
);
Ok(Self::info_from_meta(&meta_json, Some(oid)))
}
pub fn release_object(&mut self, object_id: &str) {
if self.object_store.remove(object_id).is_some() {
let code = format!(
"delete globalThis.__obscura_objects['{}'];",
object_id,
);
let _ = self.runtime.execute_script("<release>", code);
}
}
pub fn release_object_group(&mut self) {
let _ = self.runtime.execute_script(
"<releaseGroup>",
"globalThis.__obscura_objects = {};".to_string(),
);
self.object_store.clear();
}
pub async fn load_module(&mut self, url: &str, budget_ms: u64) -> Result<(), String> {
let prepared = self.prepare_module(url, budget_ms).await?;
self.evaluate_prepared_module(prepared, budget_ms).await
}
pub async fn prepare_module(&mut self, url: &str, budget_ms: u64) -> Result<PreparedModule, String> {
let budget = tokio::time::Duration::from_millis(budget_ms);
let specifier = deno_core::ModuleSpecifier::parse(url)
.map_err(|e| format!("Invalid module URL {}: {}", url, e))?;
// Bound the recursive import-graph fetch. deno_core fetches the graph
// concurrently through the one page-scoped module loader. Loading the
// entry from that loader too is important: cookies, configured request
// headers, redirects, interception, and callbacks must not change at
// the first import edge.
// The caller sizes the budget: short for enhancement modules on an
// already-rendered page, full for an unmounted SPA shell (#205).
let module_id = match tokio::time::timeout(
budget,
self.runtime.load_side_es_module(&specifier),
).await {
Ok(Ok(id)) => id,
Ok(Err(e)) => return Err(format!("Module load error: {}", e)),
Err(_) => {
return Err(format!(
"Module graph load timed out after {}ms: {}",
budget_ms, url
));
}
};
// Return as soon as the module finishes evaluating rather than waiting
// for the loop to go fully idle: a page timer (setInterval) keeps the
// loop busy forever and would otherwise burn the whole budget (#374).
Ok(PreparedModule {
module_id,
description: format!("Module {}", url),
})
}
/// Drive a just-started module evaluation to completion, or up to
/// `budget_ms`. Returns as soon as the module finishes rather than waiting
/// for the event loop to go idle: a page timer (setInterval) keeps the loop
/// busy forever and would otherwise burn the whole budget, abandoning a
/// module that had already evaluated (issue #374).
///
/// A module eval error or timeout is returned to the page lifecycle. The
/// caller may continue rendering, but must not report a failed module as
/// successfully loaded. An event-loop error is propagated out of the
/// select and handled the same way.
async fn drive_module_eval(
&mut self,
module_id: deno_core::ModuleId,
budget_ms: u64,
what: &str,
) -> Result<(), String> {
let budget = tokio::time::Duration::from_millis(budget_ms);
let result = self.runtime.mod_evaluate(module_id);
tokio::pin!(result);
let outcome = tokio::time::timeout(budget, async {
let event_loop = self
.runtime
.run_event_loop(deno_core::PollEventLoopOptions::default());
tokio::pin!(event_loop);
tokio::select! {
biased;
e = &mut event_loop => { e?; (&mut result).await }
r = &mut result => r,
}
})
.await;
match outcome {
Ok(Ok(())) => Ok(()),
Ok(Err(e)) => Err(format!("{} eval error: {}", what, e)),
Err(_) => Err(format!(
"{} evaluation timed out after {}ms",
what, budget_ms
)),
}
}
pub async fn load_inline_module(&mut self, code: &str, base_url: &str, budget_ms: u64) -> Result<(), String> {
let prepared = self
.prepare_inline_module(code, base_url, budget_ms)
.await?;
self.evaluate_prepared_module(prepared, budget_ms).await
}
pub async fn prepare_inline_module(
&mut self,
code: &str,
base_url: &str,
budget_ms: u64,
) -> Result<PreparedModule, String> {
let budget = tokio::time::Duration::from_millis(budget_ms);
// Inline modules use the document base URL as their module URL. This is
// observable through import.meta.url and is also the referrer used for
// relative imports and import-map scope matching. deno_core permits
// multiple side modules with this name; the returned ModuleId keeps
// each prepared module distinct until its scheduled evaluation.
let specifier = deno_core::ModuleSpecifier::parse(base_url)
.unwrap_or_else(|_| deno_core::ModuleSpecifier::parse("about:blank").unwrap());
let module_id = match tokio::time::timeout(
budget,
self.runtime.load_side_es_module_from_code(
&specifier,
deno_core::ModuleCodeString::from(code.to_string()),
),
).await {
Ok(Ok(id)) => id,
Ok(Err(e)) => return Err(format!("Inline module load error: {}", e)),
Err(_) => {
return Err(format!(
"Inline module graph load timed out after {}ms",
budget_ms
));
}
};
// Return as soon as the module finishes evaluating rather than waiting
// for idle: Vite's HMR / React-Refresh client installs a setInterval that
// keeps the loop busy forever, and waiting for idle burned the whole
// budget on this preamble module and starved the module that mounts the
// app, leaving #root empty (issue #374).
Ok(PreparedModule {
module_id,
description: "Inline module".to_string(),
})
}
pub async fn evaluate_prepared_module(
&mut self,
prepared: PreparedModule,
budget_ms: u64,
) -> Result<(), String> {
self.drive_module_eval(prepared.module_id, budget_ms, &prepared.description)
.await
}
fn execute_classic_script(&mut self, name: &str, source: &str) -> Result<(), String> {
// JsRuntime::execute_script in deno_core 0.350 restricts `name` to a
// &'static str. Browser script URLs are runtime data, and V8 uses this
// origin as import()'s referrer, so compile in the runtime's main
// context directly instead of substituting the fixed "<script>" name.
let scope = &mut self.runtime.handle_scope();
let source = deno_core::v8::String::new(scope, source)
.ok_or_else(|| "JS error: source allocation failed".to_string())?;
let name = deno_core::v8::String::new(scope, name)
.ok_or_else(|| "JS error: script URL allocation failed".to_string())?;
let origin = deno_core::v8::ScriptOrigin::new(
scope,
name.into(),
0,
0,
false,
0,
None,
false,
false,
false,
None,
);
let scope = &mut deno_core::v8::TryCatch::new(scope);
let script = deno_core::v8::Script::compile(scope, source, Some(&origin));
let Some(script) = script else {
if scope.is_execution_terminating() {
scope.cancel_terminate_execution();
return Err("JS error: Uncaught Error: execution terminated".to_string());
}
return match scope.exception() {
Some(exception) => {
let error = deno_core::error::JsError::from_v8_exception(scope, exception);
Err(format!("JS error: {error}"))
}
None => Err("JS error: script compilation failed without an exception".to_string()),
};
};
if script.run(scope).is_none() {
if scope.is_execution_terminating() {
scope.cancel_terminate_execution();
return Err("JS error: Uncaught Error: execution terminated".to_string());
}
return match scope.exception() {
Some(exception) => {
let error = deno_core::error::JsError::from_v8_exception(scope, exception);
Err(format!("JS error: {error}"))
}
None => Err("JS error: script execution failed without an exception".to_string()),
};
}
Ok(())
}
pub fn execute_script(&mut self, name: &str, source: &str) -> Result<(), String> {
self.execute_classic_script(name, source)
}
pub fn execute_script_guarded(&mut self, name: &str, source: &str) -> Result<(), String> {
if source.len() < 10_000 {
self.execute_script(name, source)
} else {
self.execute_script_with_timeout(name, source, std::time::Duration::from_secs(5))
}
}
pub fn execute_script_with_timeout(
&mut self,
name: &str,
source: &str,
timeout: std::time::Duration,
) -> Result<(), String> {
if timeout.is_zero() {
return self.execute_classic_script(name, source);
}
let isolate_handle = self.runtime.v8_isolate().thread_safe_handle();
let pair = std::sync::Arc::new((
std::sync::Mutex::new(false),
std::sync::Condvar::new(),
));
let pair_clone = pair.clone();
let watchdog = std::thread::spawn(move || {
let (lock, cvar) = &*pair_clone;
let mut cancelled = lock.lock().unwrap();
let deadline = std::time::Instant::now() + timeout;
loop {
let remaining = deadline.saturating_duration_since(std::time::Instant::now());
if remaining.is_zero() {
isolate_handle.terminate_execution();
return;
}
let result = cvar.wait_timeout(cancelled, remaining).unwrap();
cancelled = result.0;
if *cancelled {
return;
}
}
});
let result = self.execute_classic_script(name, source);
{
let (lock, cvar) = &*pair;
let mut cancelled = lock.lock().unwrap();
*cancelled = true;
cvar.notify_one();
}
let _ = watchdog.join();
match result {
Ok(()) => Ok(()),
Err(msg) => {
if msg.contains("Uncaught Error: execution terminated") {
tracing::warn!("Script killed after {}s timeout", timeout.as_secs());
Ok(())
} else {
Err(msg)
}
}
}
}
pub async fn run_event_loop(&mut self) -> Result<(), String> {
// A browser performs a microtask checkpoint at the end of each task.
// deno_core's event loop may return immediately when no async op is
// pending, leaving an already-resolved Promise continuation stranded
// (document.fonts.load(...).then(...), framework post-render hooks,
// and hydration follow-ups all rely on this boundary).
self.runtime.v8_isolate().perform_microtask_checkpoint();
let result = self.runtime
.run_event_loop(deno_core::PollEventLoopOptions::default())
.await
.map_err(|e| format!("Event loop error: {}", e));
self.runtime.v8_isolate().perform_microtask_checkpoint();
result
}
/// Whether the serialized dynamic-script queue is still fetching or
/// evaluating a script. The queue stays private to the bootstrap closure;
/// Rust reads it through a hidden status function so page declarations
/// cannot collide with or overwrite the queue itself.
pub fn has_pending_dynamic_scripts(&mut self) -> bool {
self.evaluate("globalThis.__obscura_hasPendingDynamicScripts?.() === true")
.ok()
.and_then(|value| value.as_bool())
.unwrap_or(false)
}
/// Arm a hard wall-clock backstop on synchronous V8 work. A page stuck in a
/// synchronous loop or a microtask storm pins the OS thread inside V8, so
/// `tokio::time::timeout` (which can only cancel at await points) never
/// fires. This spawns a watchdog thread that terminates the isolate once
/// `budget` elapses, forcing V8 to throw an uncatchable error and hand
/// control back. Always balance with [`Self::disarm_watchdog`].
pub fn arm_watchdog(&mut self, budget: std::time::Duration) -> WatchdogToken {
spawn_watchdog(self.runtime.v8_isolate().thread_safe_handle(), budget)
}
/// Stop a watchdog armed by [`Self::arm_watchdog`]. If it had already fired
/// (terminated the isolate), clear V8's termination flag so the isolate is
/// usable again, and return `true`.
pub fn disarm_watchdog(&mut self, token: WatchdogToken) -> bool {
let fired = token.stop();
if fired {
self.runtime.v8_isolate().cancel_terminate_execution();
tracing::warn!("V8 watchdog fired: terminated a synchronous overrun");
}
fired
}
/// This runtime's V8 isolate handle (captured at construction, stable for
/// the isolate's life). Lets the CDP dispatcher arm a per-command watchdog
/// from `&self`.
pub fn isolate_handle(&self) -> IsolateHandle {
self.isolate_handle.clone()
}
/// Clear V8's termination flag after a watchdog armed externally (via the
/// isolate handle) fired, so the isolate is usable for the next command.
/// No-op when the isolate is not terminating.
pub fn cancel_termination(&mut self) {
self.runtime.v8_isolate().cancel_terminate_execution();
}
/// Drive the event loop for at most `budget_ms`, bounded against BOTH async
/// idle (tokio timeout) and synchronous hangs (V8 watchdog). A microtask
/// storm that pins the thread is terminated ~500ms past the budget; a
/// well-behaved page returns as soon as the loop goes idle.
pub async fn run_event_loop_bounded(&mut self, budget_ms: u64) -> Result<(), String> {
if budget_ms == 0 {
return self.run_event_loop().await;
}
let budget = std::time::Duration::from_millis(budget_ms);
let token = self.arm_watchdog(budget + std::time::Duration::from_millis(500));
let result = tokio::time::timeout(budget, self.run_event_loop()).await;
self.disarm_watchdog(token);
match result {
Ok(Ok(())) => Ok(()),
Ok(Err(e)) if e.contains("execution terminated") => Ok(()),
Ok(Err(e)) => Err(e),
// tokio idle-timeout is the normal "settled" exit, not an error.
Err(_) => Ok(()),
}
}
/// Like [`Self::evaluate`] but bounded by a V8 watchdog, so a `--eval`
/// expression that loops forever (or awaits a promise that never settles in
/// synchronous form) cannot hang the process.
pub fn evaluate_with_timeout(
&mut self,
expression: &str,
timeout: std::time::Duration,
) -> Result<serde_json::Value, String> {
if timeout.is_zero() {
return self.evaluate(expression);
}
let wrapped = Self::wrap_expression(expression);
let token = self.arm_watchdog(timeout);
let result = self.runtime.execute_script("<eval>", wrapped);
let fired = self.disarm_watchdog(token);
match result {
Ok(v) if !fired => self.v8_to_json(v),
Ok(_) => Err("eval timed out".to_string()),
Err(e) => {
let msg = e.to_string();
if fired || msg.contains("execution terminated") {
Err("eval timed out".to_string())
} else {
Err(format!("JS error: {}", msg))
}
}
}
}
pub async fn resolve_promises(&mut self) {
// Default settle: just pump until idle or 5s.
let _ = tokio::time::timeout(
tokio::time::Duration::from_secs(5),
self.runtime.run_event_loop(deno_core::PollEventLoopOptions::default()),
).await;
}
/// Pump the event loop until `done_check` returns true (e.g. an IIFE
/// has written its result sentinel), or `max_total_ms` elapses.
///
/// Why this exists: `run_event_loop(default)` only returns when there is
/// no pending work. Page JS routinely schedules long setTimeouts
/// (IntersectionObserver re-fires at 7s, requestIdleCallback, etc.) that
/// the caller does not care about. With the plain timeout we waited 5s
/// even when the IIFE we cared about resolved in <1ms — the click flow
/// added ~7s per click because Puppeteer's `isIntersectingViewport`
/// disconnects its observer in the callback, but our scheduled
/// re-fires keep the event loop "busy" until they all fire.
pub async fn resolve_promises_until<F>(&mut self, mut done_check: F, max_total_ms: u64)
where
F: FnMut(&mut Self) -> bool,
{
let deadline = tokio::time::Instant::now() + tokio::time::Duration::from_millis(max_total_ms);
let mut tick_ms: u64 = 1;
loop {
if done_check(self) {
return;
}
if tokio::time::Instant::now() >= deadline {
return;
}
// Pump for a short slice. If the loop returns idle in <tick_ms,
// run_event_loop returns Ok and we check the predicate again.
let _ = tokio::time::timeout(
tokio::time::Duration::from_millis(tick_ms),
self.runtime.run_event_loop(deno_core::PollEventLoopOptions::default()),
).await;
// Backoff so a hung promise doesn't burn CPU. Caps at 50ms;
// worst case we miss the result by <50ms.
if tick_ms < 50 { tick_ms = (tick_ms * 2).min(50); }
}
}
pub fn take_dom(&self) -> Option<DomTree> {
let mut state = self.state.borrow_mut();
#[cfg(feature = "render")]
{
state.prepared_render = None;
state.render_resources = obscura_render::RenderResourceCache::default();
state.dynamic_fonts.clear();
}
state.dom.take()
}
/// Export document-owned script preparation state before the runtime realm
/// is temporarily destroyed. Page suspension keeps the DOM alive, so the
/// HTML "already started" flags must travel with it rather than resetting
/// like window-global JavaScript state.
pub fn started_script_ids(&self) -> Vec<u32> {
let state = self.state.borrow();
let mut ids = state
.already_started_scripts
.borrow()
.iter()
.map(|node_id| node_id.raw())
.collect::<Vec<_>>();
ids.sort_unstable();
ids
}
/// Restore script preparation state only onto script nodes in the current
/// DOM. Callers use this exclusively for the same DomTree surviving a
/// suspend/resume cycle; normal set_dom navigation starts from an empty set.
pub fn restore_started_script_ids(&self, ids: &[u32]) {
let state = self.state.borrow();
let Some(dom) = state.dom.as_ref() else {
return;
};
let valid = ids
.iter()
.copied()
.map(NodeId::new)
.filter(|node_id| node_is_script(dom, *node_id))
.collect::<Vec<_>>();
state.already_started_scripts.borrow_mut().extend(valid);
}
pub fn with_dom<R>(&self, f: impl FnOnce(&DomTree) -> R) -> Option<R> {
let state = self.state.borrow();
state.dom.as_ref().map(f)
}
/// Absolute URLs the page requested via fetch()/XHR, in request order
/// (issue #301). Backs `--dump assets`.
pub fn fetched_urls(&self) -> Vec<String> {
self.state.borrow().fetched_urls.clone()
}
/// Drain the network events recorded for script-initiated requests
/// (fetch/XHR/dynamic resource). The Page moves these into its own
/// network_events so the CDP layer emits Network events for them (#406).
pub fn take_js_network_events(&self) -> Vec<crate::ops::JsNetworkEvent> {
std::mem::take(&mut self.state.borrow_mut().js_network_events)
}
pub fn dom_ref(&self) -> Option<std::cell::Ref<'_, Option<DomTree>>> {
let r = self.state.borrow();
if r.dom.is_some() {
Some(std::cell::Ref::map(r, |s| &s.dom))
} else {
None
}
}
fn make_oid(&self, counter: u64) -> String {
format!("{{\"injectedScriptId\":1,\"id\":{}}}", counter)
}
fn wrap_expression(expression: &str) -> String {
let trimmed = expression.trim();
let is_multi_statement = trimmed.starts_with("var ")
|| trimmed.starts_with("let ")
|| trimmed.starts_with("const ")
|| trimmed.starts_with("if ")
|| trimmed.starts_with("for ")
|| trimmed.starts_with("while ")
|| trimmed.starts_with("return ");
if is_multi_statement {
format!(
"(function() {{ try {{\n{}\n}} catch(e) {{ return null; }} }})()",
expression
)
} else {
// Strip trailing semicolons + whitespace before wrapping in
// `return (...);`. Playwright's utility-script expression is
// an IIFE that ends with `})();` — leaving the `;` in place
// produces `return (...;);`, a SyntaxError. The script fails
// to parse, the catch never fires (parse errors are not
// catchable), and the function silently returns `undefined`.
// Stripping makes the wrapped expression syntactically valid.
//
// The newline before the trailing `)` also terminates any
// `//# sourceURL=...` line comment the caller may have appended
// (Puppeteer's evaluated bundles do).
let cleaned = trimmed.trim_end_matches(|c: char| c == ';' || c.is_whitespace());
format!(
"(function() {{ try {{ return (\n{}\n); }} catch(e) {{ return null; }} }})()",
cleaned
)
}
}
fn meta_extract_js(var_name: &str) -> String {
format!(
r#"(function(v) {{
var t = typeof v;
var st = null, cn = '', desc = '';
if (v === null) {{ t = 'object'; st = 'null'; }}
else if (v === undefined) {{ t = 'undefined'; }}
else if (Array.isArray(v)) {{
st = 'array'; cn = 'Array';
desc = 'Array(' + v.length + ')';
}}
else if (t === 'object' && typeof v._nid === 'number') {{
st = 'node';
cn = v.constructor ? v.constructor.name : 'Node';
if (v.nodeType === 9) cn = 'HTMLDocument';
else if (v.nodeType === 1) cn = 'HTML' + (v.tagName || 'Element').charAt(0) + (v.tagName || 'Element').slice(1).toLowerCase() + 'Element';
desc = v.tagName ? v.tagName.toLowerCase() : (v.nodeName || 'node');
}}
else if (t === 'function') {{
cn = 'Function';
desc = v.name ? 'function ' + v.name + '()' : 'function()';
}}
else if (t === 'object') {{
cn = (v.constructor && v.constructor.name) || 'Object';
desc = cn;
}}
else {{ desc = String(v); }}
return JSON.stringify({{type:t,subtype:st,className:cn,description:desc}});
}})({var_name})"#,
var_name = var_name,
)
}
fn resolve_this(&self, object_id: Option<&str>) -> String {
match object_id {
Some(oid) => {
if let Some(retrieval) = self.object_store.get(oid) {
retrieval.clone()
} else if oid.starts_with("node-") {
let nid = oid.strip_prefix("node-").unwrap_or("0");
format!(
"(function() {{ \
var nid = {}; \
var cache = globalThis._cache || new Map(); \
if (cache.has(nid)) return cache.get(nid); \
return null; \
}})()",
nid
)
} else {
"globalThis".to_string()
}
}
None => "globalThis".to_string(),
}
}
fn build_args(&self, arguments: &[serde_json::Value]) -> (String, String) {
let mut setup_lines = Vec::new();
let mut arg_names = Vec::new();
for (i, arg) in arguments.iter().enumerate() {
let arg_name = format!("__arg{}", i);
if let Some(value) = arg.get("value") {
let json_str = serde_json::to_string(value).unwrap_or_else(|_| "undefined".to_string());
setup_lines.push(format!("var {} = {};", arg_name, json_str));
} else if let Some(oid) = arg.get("objectId").and_then(|v| v.as_str()) {
if let Some(retrieval) = self.object_store.get(oid) {
setup_lines.push(format!("var {} = {};", arg_name, retrieval));
} else {
setup_lines.push(format!("var {} = undefined;", arg_name));
}
} else if let Some(unser) = arg.get("unserializableValue").and_then(|v| v.as_str()) {
setup_lines.push(format!("var {} = {};", arg_name, unser));
} else {
setup_lines.push(format!("var {} = undefined;", arg_name));
}
arg_names.push(arg_name);
}
(setup_lines.join("\n"), arg_names.join(", "))
}
fn v8_to_json(
&mut self,
result: deno_core::v8::Global<deno_core::v8::Value>,
) -> Result<serde_json::Value, String> {
let scope = &mut self.runtime.handle_scope();
let local = deno_core::v8::Local::new(scope, result);
if local.is_undefined() || local.is_null() {
return Ok(serde_json::Value::Null);
}
if local.is_boolean() {
return Ok(serde_json::Value::Bool(local.boolean_value(scope)));
}
if local.is_number() {
let n = local.number_value(scope).unwrap_or(0.0);
return Ok(serde_json::json!(n));
}
if local.is_string() {
let s = local.to_rust_string_lossy(scope);
return Ok(serde_json::Value::String(s));
}
let global = scope.get_current_context().global(scope);
let json_obj_str = deno_core::v8::String::new(scope, "JSON").unwrap();
if let Some(json_obj) = global.get(scope, json_obj_str.into()) {
if let Some(json_obj) = json_obj.to_object(scope) {
let stringify_str = deno_core::v8::String::new(scope, "stringify").unwrap();
if let Some(stringify_fn) = json_obj.get(scope, stringify_str.into()) {
if let Ok(stringify_fn) =
deno_core::v8::Local::<deno_core::v8::Function>::try_from(stringify_fn)
{
let args = [local];
if let Some(result) = stringify_fn.call(scope, json_obj.into(), &args) {
let json_str = result.to_rust_string_lossy(scope);
if let Ok(val) = serde_json::from_str(&json_str) {
return Ok(val);
}
}
}
}
}
}
let s = local.to_rust_string_lossy(scope);
Ok(serde_json::Value::String(s))
}
fn info_from_json(value: &serde_json::Value) -> RemoteObjectInfo {
match value {
serde_json::Value::Null => RemoteObjectInfo {
js_type: "object".into(),
subtype: Some("null".into()),
class_name: String::new(),
description: "null".into(),
object_id: None,
value: Some(serde_json::Value::Null),
},
serde_json::Value::Bool(b) => RemoteObjectInfo {
js_type: "boolean".into(),
subtype: None,
class_name: String::new(),
description: b.to_string(),
object_id: None,
value: Some(value.clone()),
},
serde_json::Value::Number(n) => RemoteObjectInfo {
js_type: "number".into(),
subtype: None,
class_name: String::new(),
description: n.to_string(),
object_id: None,
value: Some(value.clone()),
},
serde_json::Value::String(s) => RemoteObjectInfo {
js_type: "string".into(),
subtype: None,
class_name: String::new(),
description: s.clone(),
object_id: None,
value: Some(value.clone()),
},
serde_json::Value::Array(arr) => RemoteObjectInfo {
js_type: "object".into(),
subtype: Some("array".into()),
class_name: "Array".into(),
description: format!("Array({})", arr.len()),
object_id: None,
value: Some(value.clone()),
},
serde_json::Value::Object(_) => RemoteObjectInfo {
js_type: "object".into(),
subtype: None,
class_name: "Object".into(),
description: "Object".into(),
object_id: None,
value: Some(value.clone()),
},
}
}
fn info_from_meta(
meta: &serde_json::Value,
object_id: Option<String>,
) -> RemoteObjectInfo {
let js_type = meta
.get("type")
.and_then(|v| v.as_str())
.unwrap_or("undefined")
.to_string();
let subtype = meta
.get("subtype")
.and_then(|v| v.as_str())
.map(|s| s.to_string());
let class_name = meta
.get("className")
.and_then(|v| v.as_str())
.unwrap_or("")
.to_string();
let description = meta
.get("description")
.and_then(|v| v.as_str())
.unwrap_or("")
.to_string();
let value = if js_type != "object" && js_type != "function" {
meta.get("description")
.and_then(|v| v.as_str())
.map(|s| serde_json::Value::String(s.to_string()))
} else {
None
};
RemoteObjectInfo {
js_type,
subtype,
class_name,
description,
object_id,
value,
}
}
}
impl Default for ObscuraJsRuntime {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
use obscura_dom::parse_html;
fn setup_runtime(html: &str) -> ObscuraJsRuntime {
let dom = parse_html(html);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_url("http://example.com/test");
rt.set_title("Test Page");
rt.run_page_init();
rt
}
#[tokio::test(flavor = "current_thread")]
async fn string_timeout_handler_executes_in_global_scope() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate(
"var __timerValue='pending'; setTimeout('__timerValue=\"done\"', 0)",
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("globalThis.__timerValue").unwrap(),
serde_json::json!("done")
);
}
#[tokio::test(flavor = "current_thread")]
async fn string_timeout_declarations_reach_global_scope() {
// A string timer handler runs as a classic script in global scope, so a
// top-level var/function declaration in it becomes a global. new Function()
// kept those declarations local to the compiled function, so they never
// reached globalThis.
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate(
"setTimeout('var __leaked = 42; function __leakedFn(){ return 7; }', 0)",
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
let v = rt
.evaluate(
"String(globalThis.__leaked) + '|' + (typeof globalThis.__leakedFn === 'function' ? globalThis.__leakedFn() : 'missing')",
)
.unwrap();
assert_eq!(v, serde_json::json!("42|7"));
}
#[tokio::test(flavor = "current_thread")]
async fn string_interval_handler_repeats_and_can_clear_itself() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate("globalThis.__ticks=0").unwrap();
rt.evaluate(
"globalThis.__timerId=setInterval('__ticks++;if(__ticks===2)clearInterval(__timerId)',1)",
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("globalThis.__ticks").unwrap(),
serde_json::json!(2.0)
);
}
#[test]
fn performance_now_is_monotonic_under_bursty_calls() {
let mut rt = setup_runtime("<html><body></body></html>");
// Hammer performance.now() so many calls land in the same millisecond and
// the wall clock rolls over repeatedly; the value must never go backwards.
let violations = rt
.evaluate(
"(function(){var prev=-Infinity, bad=0; for(var i=0;i<500000;i++){var t=performance.now(); if(t<prev) bad++; prev=t;} return bad;})()",
)
.unwrap();
assert_eq!(violations.as_f64(), Some(0.0), "performance.now() went backwards");
}
#[test]
fn performance_now_does_not_outrun_elapsed_time() {
let mut rt = setup_runtime("<html><body></body></html>");
let lead = rt
.evaluate(
"(function(){for(var i=0;i<500000;i++)performance.now(); return performance.now()-(Date.now()-performance.timeOrigin);})()",
)
.unwrap();
assert!(
lead.as_f64().unwrap() <= 1.0,
"performance.now() advanced ahead of elapsed time: {lead}"
);
}
#[test]
fn childnode_helpers_coerce_non_string_primitives_to_text() {
let mut rt = setup_runtime(r#"<html><body><div id="p"><span id="t">x</span></div></body></html>"#);
let before = rt
.evaluate("(function(){var t=document.getElementById('t'); t.before(5); return t.previousSibling ? t.previousSibling.textContent : 'NULL';})()")
.unwrap();
assert_eq!(before, serde_json::json!("5"));
let after = rt
.evaluate("(function(){var t=document.getElementById('t'); t.after(true); return t.nextSibling ? t.nextSibling.textContent : 'NULL';})()")
.unwrap();
assert_eq!(after, serde_json::json!("true"));
let replaced = rt
.evaluate("(function(){var t=document.getElementById('t'); t.replaceWith(42); return document.getElementById('p').textContent;})()")
.unwrap();
assert!(
replaced.as_str().unwrap().contains("42"),
"replaceWith(42) should leave text '42': {replaced}"
);
}
#[test]
fn replace_state_without_url_preserves_current_location() {
let mut rt = setup_runtime("<html><body></body></html>");
let path = rt
.evaluate(
"(function(){history.pushState({}, '', '/dashboard'); history.replaceState({scroll:1}); return location.pathname;})()",
)
.unwrap();
assert_eq!(path, serde_json::json!("/dashboard"));
}
#[test]
fn push_state_without_url_preserves_current_location() {
let mut rt = setup_runtime("<html><body></body></html>");
let path = rt
.evaluate(
"(function(){history.pushState({}, '', '/a'); history.pushState({b:1}); return location.pathname;})()",
)
.unwrap();
assert_eq!(path, serde_json::json!("/a"));
}
#[test]
fn style_attribute_parses_into_style_object() {
// Inline styles present in the parsed HTML must be visible via el.style.*
let mut rt = setup_runtime(
r#"<html><body><div id="d" style="color: red; display: none">hi</div></body></html>"#,
);
assert_eq!(
rt.evaluate("document.getElementById('d').style.color").unwrap(),
serde_json::json!("red")
);
assert_eq!(
rt.evaluate("document.getElementById('d').style.display").unwrap(),
serde_json::json!("none")
);
}
#[test]
fn set_style_attribute_updates_style_object() {
let mut rt = setup_runtime(r#"<html><body><div id="d">hi</div></body></html>"#);
let margin = rt
.evaluate(
"(function(){var e=document.getElementById('d'); e.setAttribute('style','margin: 5px'); return e.style.margin;})()",
)
.unwrap();
assert_eq!(margin, serde_json::json!("5px"));
}
#[test]
fn null_namespace_style_attribute_stays_in_sync() {
let mut rt = setup_runtime(r#"<html><body><div id="d">hi</div></body></html>"#);
let result = rt
.evaluate(
"(function(){var e=document.getElementById('d'); e.setAttributeNS(null,'style','color: green'); var before=e.style.color; e.removeAttributeNS(null,'style'); return before+'|'+e.style.color+'|'+String(e.getAttribute('style'));})()",
)
.unwrap();
assert_eq!(result, serde_json::json!("green||null"));
}
#[test]
fn setting_style_property_updates_the_attribute_and_serialization() {
let mut rt = setup_runtime(r#"<html><body><div id="d">hi</div></body></html>"#);
let attr = rt
.evaluate(
"(function(){var e=document.getElementById('d'); e.style.color='blue'; return e.getAttribute('style');})()",
)
.unwrap();
assert_eq!(attr, serde_json::json!("color: blue;"));
let html = rt
.evaluate("document.getElementById('d').outerHTML")
.unwrap();
assert!(
html.as_str().unwrap().contains("color: blue"),
"outerHTML should carry the style set via el.style: {html}"
);
}
#[test]
fn style_object_reflects_external_attribute_change() {
// A later setAttribute('style', …) must supersede an earlier value read
// through el.style (the declaration re-syncs from the attribute).
let mut rt = setup_runtime(
r#"<html><body><div id="d" style="color: red">hi</div></body></html>"#,
);
let color = rt
.evaluate(
"(function(){var e=document.getElementById('d'); e.style.color; e.setAttribute('style','color: green'); return e.style.color;})()",
)
.unwrap();
assert_eq!(color, serde_json::json!("green"));
}
#[test]
fn clone_node_deep_preserves_context_sensitive_elements() {
// A <tr> is not a valid child of <div>, so cloning through a throwaway
// <div>.innerHTML dropped it and returned null. A structural clone keeps it.
let mut rt = setup_runtime("<html><body></body></html>");
let tag = rt
.evaluate("(document.createElement('tr').cloneNode(true) || {}).tagName || 'NULL'")
.unwrap();
assert_eq!(tag, serde_json::json!("TR"));
let td = rt
.evaluate("(document.createElement('td').cloneNode(true) || {}).tagName || 'NULL'")
.unwrap();
assert_eq!(td, serde_json::json!("TD"));
}
#[test]
fn clone_node_deep_copies_children_and_attributes() {
let mut rt = setup_runtime(r#"<html><body><ul id="l"><li class="a">one</li><li class="b">two</li></ul></body></html>"#);
let out = rt
.evaluate(
"(function(){var c=document.getElementById('l').cloneNode(true); return c.children.length + '|' + c.children[0].className + '|' + c.children[1].textContent;})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("2|a|two"));
}
#[test]
fn clone_node_deep_preserves_table_rows() {
let mut rt = setup_runtime(
r#"<html><body><table id="t"><tbody><tr><td>1</td><td>2</td></tr></tbody></table></body></html>"#,
);
// Navigate the detached clone directly (querySelector does not traverse
// detached subtrees). tbody > tr > (td, td).
let out = rt
.evaluate(
"(function(){var tb=document.querySelector('#t tbody').cloneNode(true); var tr=tb.children[0]; return tr.tagName + '|' + tr.children.length + '|' + tr.children[1].textContent;})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("TR|2|2"));
}
#[test]
fn clone_node_shallow_copies_attributes_without_children() {
let mut rt = setup_runtime(r#"<html><body><div id="d" data-x="7"><span>kid</span></div></body></html>"#);
let out = rt
.evaluate(
"(function(){var c=document.getElementById('d').cloneNode(false); return c.getAttribute('data-x') + '|' + c.childNodes.length;})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("7|0"));
}
#[test]
fn clone_node_copies_js_assigned_inline_styles() {
let mut rt = setup_runtime("<html><body><div id='d'></div></body></html>");
let out = rt
.evaluate(
"(function(){var d=document.getElementById('d');d.style.color='red';d.style.fontSize='12px';var c=d.cloneNode(false);return c.style.color+'|'+c.style.fontSize+'|'+c.style.cssText;})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("red|12px|color: red; font-size: 12px;"));
}
#[test]
fn clone_node_deep_copies_template_content() {
let mut rt = setup_runtime("<html><body></body></html>");
let out = rt
.evaluate(
"(function(){var t=document.createElement('template');t.content.appendChild(document.createElement('option')).textContent='choice';var c=t.cloneNode(true);return c.content.childNodes.length+'|'+c.content.firstChild.tagName+'|'+c.content.firstChild.textContent;})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("1|OPTION|choice"));
}
#[test]
fn insert_adjacent_html_parses_table_fragments() {
let mut rt = setup_runtime(
r#"<html><body><table id="t"><tbody id="tb"></tbody></table></body></html>"#,
);
let out = rt
.evaluate("(function(){var tb=document.getElementById('tb'); tb.insertAdjacentHTML('beforeend','<tr><td>1</td><td>2</td></tr>'); var tr=tb.firstElementChild; return tr ? (tr.tagName+':'+tr.children.length) : 'NULL';})()")
.unwrap();
assert_eq!(out, serde_json::json!("TR:2"));
}
#[test]
fn insert_adjacent_html_position_is_case_insensitive() {
let mut rt = setup_runtime(r#"<html><body><div id="host"><span>base</span></div></body></html>"#);
let out = rt
.evaluate("(function(){var h=document.getElementById('host'); h.insertAdjacentHTML('BeforeEnd','<b>x</b>'); return h.lastElementChild ? h.lastElementChild.tagName : 'NULL';})()")
.unwrap();
assert_eq!(out, serde_json::json!("B"));
}
#[test]
fn insert_adjacent_html_rejects_invalid_position() {
let mut rt = setup_runtime(r#"<html><body><div id="host"></div></body></html>"#);
let out = rt
.evaluate("(function(){var h=document.getElementById('host'); try { h.insertAdjacentHTML('nope','<b>x</b>'); return 'no-throw'; } catch(e){ return e.name; }})()")
.unwrap();
assert_eq!(out, serde_json::json!("SyntaxError"));
}
#[test]
fn insert_adjacent_html_keeps_leading_comments_in_table_contexts() {
let mut rt = setup_runtime(
r#"<html><body><table><tbody id="tb"><tr id="row"></tr></tbody></table></body></html>"#,
);
let out = rt
.evaluate(
"(function(){var tb=document.getElementById('tb');tb.insertAdjacentHTML('beforeend','<!--m--><tr><td>v</td></tr>');var row=document.getElementById('row');row.insertAdjacentHTML('beforeend','<!--n--><td>x</td>');return Array.from(tb.childNodes).map(function(n){return n.nodeName}).join('|')+';'+Array.from(row.childNodes).map(function(n){return n.nodeName}).join('|');})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("TR|#comment|TR;#comment|TD"));
}
#[test]
fn insert_adjacent_html_uses_the_insertion_element_as_context() {
let mut rt = setup_runtime(
r#"<html><body><div id="d"></div><table id="table"><tbody id="tb"></tbody></table></body></html>"#,
);
let out = rt
.evaluate(
"(function(){var d=document.getElementById('d');d.insertAdjacentHTML('beforeend','<tr><td>v</td></tr>');var table=document.getElementById('table');table.insertAdjacentHTML('beforeend','<tr><td>x</td></tr>');var tb=document.getElementById('tb');tb.insertAdjacentHTML('beforeend','<tr><td>y</td></tr>tail');return d.firstChild.nodeName+':'+d.textContent+';'+table.lastElementChild.tagName+';'+Array.from(tb.childNodes).map(function(n){return n.nodeName+(n.data?':'+n.data:'')}).join('|');})()",
)
.unwrap();
assert_eq!(out, serde_json::json!("#text:v;TBODY;TR|#text:tail"));
}
#[test]
fn set_attribute_ns_is_retrievable_by_namespace_and_local_name() {
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate("(function(){var s=document.createElementNS('http://www.w3.org/2000/svg','svg'); s.setAttributeNS('http://www.w3.org/1999/xlink','xlink:href','#g'); return s.getAttributeNS('http://www.w3.org/1999/xlink','href');})()")
.unwrap();
assert_eq!(v, serde_json::json!("#g"));
}
#[test]
fn remove_attribute_ns_removes_by_namespace() {
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate("(function(){var s=document.createElementNS('http://www.w3.org/2000/svg','svg'); s.setAttributeNS('http://www.w3.org/1999/xlink','xlink:href','#g'); s.removeAttributeNS('http://www.w3.org/1999/xlink','href'); return s.getAttributeNS('http://www.w3.org/1999/xlink','href');})()")
.unwrap();
assert_eq!(v, serde_json::json!(null));
}
#[test]
fn get_attribute_ns_reads_plain_attributes_with_null_namespace() {
// Backward-compat: getAttributeNS(null, name) still reads a plain attr.
let mut rt = setup_runtime(r#"<html><body><div id="d" title="hi"></div></body></html>"#);
let v = rt
.evaluate("document.getElementById('d').getAttributeNS(null,'title')")
.unwrap();
assert_eq!(v, serde_json::json!("hi"));
}
#[test]
fn namespaced_attribute_keeps_its_qualified_name() {
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate("(function(){var s=document.createElementNS('http://www.w3.org/2000/svg','svg');s.setAttributeNS('http://www.w3.org/1999/xlink','xlink:href','#g');return s.getAttribute('xlink:href')+'|'+s.getAttributeNames()[0]+'|'+s.outerHTML;})()")
.unwrap();
assert_eq!(v, serde_json::json!("#g|xlink:href|<svg xlink:href=\"#g\"></svg>"));
}
#[test]
fn parsed_xlink_attribute_is_available_through_both_apis() {
let mut rt = setup_runtime(
r##"<html><body><svg><use id="u" xlink:href="#icon"></use></svg></body></html>"##,
);
let v = rt
.evaluate("(function(){var u=document.getElementById('u');return u.getAttribute('xlink:href')+'|'+u.getAttributeNS('http://www.w3.org/1999/xlink','href')+'|'+u.getAttributeNames().join(',');})()")
.unwrap();
assert_eq!(v, serde_json::json!("#icon|#icon|id,xlink:href"));
}
#[test]
fn set_attribute_updates_a_parsed_namespaced_attribute_in_place() {
// setAttribute matched the stored attribute by local name only, so a
// parsed `xlink:href` (prefix=xlink, local=href) was never found by the
// qualified name "xlink:href": the update was pushed as a *second*
// attribute, getAttribute kept returning the stale original, and the
// element serialized `xlink:href` twice.
let mut rt = setup_runtime(
r##"<html><body><svg><use id="u" xlink:href="#a"></use></svg></body></html>"##,
);
let v = rt
.evaluate("(function(){var u=document.getElementById('u');u.setAttribute('xlink:href','#b');var dup=(u.outerHTML.match(/xlink:href/g)||[]).length;return u.getAttribute('xlink:href')+'|'+u.getAttributeNS('http://www.w3.org/1999/xlink','href')+'|'+u.getAttributeNames().join(',')+'|'+dup;})()")
.unwrap();
assert_eq!(v, serde_json::json!("#b|#b|id,xlink:href|1"));
}
#[test]
fn set_attribute_ns_validates_namespace_constraints() {
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate("(function(){var e=document.createElement('div'),out=[];for(const args of [[null,'x:y'],['urn:test','a:b:c'],['urn:test','xml:lang'],['urn:test','xmlns:x']]){try{e.setAttributeNS(args[0],args[1],'v');out.push('none')}catch(err){out.push(err.name)}}return out.join('|');})()")
.unwrap();
assert_eq!(
v,
serde_json::json!(
"NamespaceError|InvalidCharacterError|NamespaceError|NamespaceError"
)
);
}
#[test]
fn dom_parser_flags_malformed_xml_with_parsererror() {
let mut rt = setup_runtime("<html><body></body></html>");
let has_err = rt
.evaluate("(function(){var d=new DOMParser().parseFromString('<a><b></a>','application/xml'); return d.querySelector('parsererror') ? true : false;})()")
.unwrap();
assert_eq!(has_err, serde_json::json!(true));
}
#[test]
fn dom_parser_accepts_well_formed_xml() {
let mut rt = setup_runtime("<html><body></body></html>");
let ok = rt
.evaluate("(function(){var d=new DOMParser().parseFromString('<root><child>x</child></root>','application/xml'); return d.querySelector('parsererror') ? 'ERR' : 'OK';})()")
.unwrap();
assert_eq!(ok, serde_json::json!("OK"));
}
#[test]
fn dom_parser_html_never_gets_parsererror() {
// HTML parsing is tolerant and must never synthesize a parsererror.
let mut rt = setup_runtime("<html><body></body></html>");
let ok = rt
.evaluate("(function(){var d=new DOMParser().parseFromString('<div><p>hi</a>','text/html'); return d.querySelector('parsererror') ? 'ERR' : 'OK';})()")
.unwrap();
assert_eq!(ok, serde_json::json!("OK"));
}
#[test]
fn custom_element_upgrade_runs_class_constructor_on_existing_element() {
let mut rt = setup_runtime(
r#"<html><body><svelte-like id="component"></svelte-like></body></html>"#,
);
let result = rt
.evaluate(
r#"
const before = document.getElementById("component");
class SvelteLike extends HTMLElement {
constructor() {
super();
this.$$s = [];
this.attachShadow({ mode: "open" });
}
connectedCallback() {
for (const subscription of this.$$s) subscription();
this.$$s.push(() => {});
this.shadowRoot.textContent = "ready";
}
}
customElements.define("svelte-like", SvelteLike);
return [
document.getElementById("component") === before,
before instanceof SvelteLike,
before.constructor === SvelteLike,
before.$$s.length,
before.shadowRoot && before.shadowRoot.textContent
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true,
true,
true,
1,
"ready"
])
);
}
#[test]
fn shadow_root_children_expose_parent_siblings_and_composed_root() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"
const host = document.createElement("lit-host");
document.body.appendChild(host);
const root = host.attachShadow({ mode: "open" });
const start = document.createComment("start");
const end = document.createComment("end");
root.appendChild(start);
root.appendChild(end);
const text = document.createTextNode("rendered");
start.parentNode.insertBefore(text, end);
const inserted = [
start.parentNode === root,
start.nextSibling === text,
text.previousSibling === start,
text.nextSibling === end,
end.previousSibling === text,
root.contains(text),
text.getRootNode() === root,
text.getRootNode({ composed: true }) === document,
root.getRootNode({ composed: true }) === document,
root.isConnected,
text.isConnected,
root.textContent
];
root.removeChild(text);
const removed = [
text.parentNode === null,
start.nextSibling === end,
end.previousSibling === start
];
document.body.appendChild(start);
const moved = [
start.parentNode === document.body,
start.getRootNode() === document,
root.firstChild === end
];
root.innerHTML = "<span id='inside'>inside</span>";
const inside = root.firstChild;
const parsed = [
inside.parentNode === root,
inside.getRootNode() === root,
root.textContent,
inside.matches("span#inside"),
root.querySelector("span#inside") === inside,
root.querySelectorAll("span#inside").length === 1
];
const a = document.createElement("a");
const b = document.createElement("b");
const c = document.createElement("i");
root.replaceChildren(a, b, c);
root.insertBefore(a, c);
const movedWithin = Array.from(root.children, el => el.localName);
const fragment = document.createDocumentFragment();
const x = document.createElement("x-one");
const y = document.createElement("x-two");
fragment.append(x, y);
root.insertBefore(fragment, c);
const flattened = [
Array.from(root.children, el => el.localName),
fragment.childNodes.length,
x.parentNode === root,
y.parentNode === root
];
root.replaceChild(b, c);
const replaced = [
Array.from(root.children, el => el.localName),
c.parentNode === null,
b.parentNode === root
];
const detached = document.createElement("detached-node");
const errors = [];
for (const operation of [
() => root.insertBefore(detached, c),
() => root.removeChild(c),
() => root.replaceChild(detached, c),
() => root.appendChild(root),
() => root.appendChild(host)
]) {
try {
operation();
errors.push("none");
} catch (error) {
errors.push(error.name);
}
}
return [inserted, removed, moved, parsed, movedWithin, flattened, replaced, errors];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
[
true,
true,
true,
true,
true,
true,
true,
true,
true,
true,
true,
"rendered"
],
[true, true, true],
[true, true, true],
[true, true, "inside", true, true, true],
["b", "a", "i"],
[["b", "a", "x-one", "x-two", "i"], 0, true, true],
[["a", "x-one", "x-two", "b"], true, true],
[
"NotFoundError",
"NotFoundError",
"NotFoundError",
"HierarchyRequestError",
"HierarchyRequestError"
]
])
);
}
#[test]
fn create_element_synchronously_constructs_an_existing_definition() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"
const testStart = true;
class CreatedLater extends HTMLElement {
constructor() {
super();
this.constructorState = ["initialized"];
this.attachShadow({ mode: "open" });
this.shadowRoot.textContent = "constructed";
}
connectedCallback() {
this.constructorState.push("connected");
}
}
customElements.define("created-later", CreatedLater);
const element = document.createElement("created-later");
const foreign = document.createElementNS(
"http://www.w3.org/2000/svg", "created-later"
);
return [
element instanceof CreatedLater,
element.constructor === CreatedLater,
element.localName,
element.constructorState,
element.shadowRoot && element.shadowRoot.textContent,
element.isConnected,
foreign instanceof CreatedLater
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true,
true,
"created-later",
["initialized"],
"constructed",
false,
false
])
);
}
#[test]
fn throwing_custom_element_constructor_marks_upgrade_failed_without_connecting() {
let mut rt = setup_runtime(
r#"<html><body><throws-during-upgrade id="target"></throws-during-upgrade></body></html>"#,
);
let result = rt
.evaluate(
r#"
let constructorCalls = 0;
let connectedCalls = 0;
class ThrowsDuringUpgrade extends HTMLElement {
constructor() {
super();
constructorCalls++;
throw new Error("expected constructor failure");
}
connectedCallback() {
connectedCalls++;
}
}
customElements.define("throws-during-upgrade", ThrowsDuringUpgrade);
const element = document.getElementById("target");
customElements.upgrade(document);
return [
constructorCalls,
connectedCalls,
element.__customUpgradeFailed === true
];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([1, 0, true]));
}
#[test]
fn test_document_title() {
let mut rt = setup_runtime("<html><head><title>Test</title></head><body></body></html>");
let title = rt.evaluate("document.title").unwrap();
assert_eq!(title, serde_json::json!("Test Page"));
}
#[test]
fn global_window_has_browser_constructor_identity() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
"return [window === self, self.constructor === Window,\
window instanceof Window, self.document === document,\
self.location === location, self.history === history,\
self.navigator === navigator];",
)
.unwrap();
assert_eq!(
result,
serde_json::json!([true, true, true, true, true, true, true])
);
}
#[test]
fn explicit_viewport_is_distinct_from_fingerprinted_screen() {
let dom = parse_html("<html><body></body></html>");
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(1024.0, 768.0);
rt.run_page_init();
let result = rt
.evaluate(
"return [innerWidth, innerHeight, visualViewport.width,\
visualViewport.height, screen.width > 0, screen.height > 0];",
)
.unwrap();
assert_eq!(
result,
serde_json::json!([1024, 768, 1024, 768, true, true])
);
}
#[test]
fn match_media_evaluates_query_lists_conjunctions_ranges_and_orientation() {
let dom = parse_html("<html><body></body></html>");
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(1280.0, 720.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
return [
matchMedia("(min-width: 1024px) and (min-height: 700px)").matches,
matchMedia("(min-width: 1024px) and (min-height: 900px)").matches,
matchMedia("(max-width: 600px), screen and (orientation: landscape)").matches,
matchMedia("not print").matches,
matchMedia("not screen").matches,
matchMedia("only screen and (width: 1280px) and (height = 720px)").matches,
matchMedia("(1000px <= width < 1400px) and (height > 700px)").matches,
matchMedia("(orientation: portrait)").matches,
matchMedia("(prefers-color-scheme: light) and (pointer: fine) and (hover: hover)").matches,
matchMedia("(obscura-unknown-feature: yes)").matches
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([true, false, true, true, false, true, true, false, true, false])
);
}
#[test]
fn match_media_matches_are_live_across_viewport_resizes() {
let dom = parse_html("<html><body></body></html>");
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(900.0, 600.0);
rt.run_page_init();
assert_eq!(
rt.evaluate(
r#"
return [
(globalThis.__wideAndShort = matchMedia(
"(min-width: 800px) and (max-height: 700px)"
)).matches,
(globalThis.__portrait = matchMedia(
"(orientation: portrait)"
)).matches
];
"#,
)
.unwrap(),
serde_json::json!([true, false])
);
rt.set_viewport(600.0, 900.0);
assert_eq!(
rt.evaluate(
"return [__wideAndShort.matches, __portrait.matches,\
matchMedia('(max-width: 600px), print').matches];",
)
.unwrap(),
serde_json::json!([false, true, true])
);
}
#[test]
fn computed_style_access_does_not_get_shadowed_by_inline_style_proxy() {
let mut rt = setup_runtime(
r#"<html><body><div id="box" style="opacity:.5;width:40px"></div></body></html>"#,
);
let result = rt
.evaluate(
r#"
const box = document.getElementById("box");
const computed = getComputedStyle(box);
return [
computed.display,
computed.visibility,
computed.opacity,
computed.width,
computed.getPropertyValue("display"),
computed.getPropertyValue("background-color")
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
"block",
"visible",
"0.5",
"40px",
"block",
"rgba(0, 0, 0, 0)"
])
);
}
#[test]
fn hyperlink_content_attributes_reflect_through_the_idl_surface() {
let mut rt = setup_runtime(
r#"<html><body>
<a id="locale" hreflang="en-US" rel="alternate"
target="_blank" download="guide.pdf"
ping="/audit" referrerpolicy="no-referrer">English</a>
</body></html>"#,
);
let result = rt
.evaluate(
r#"
const link = document.getElementById("locale");
const initial = [
link.hreflang, link.rel, link.target, link.download,
link.ping, link.referrerPolicy,
link.hreflang.split("-")[1]
];
link.hreflang = "de-DE";
link.referrerPolicy = "origin";
return [
initial,
link.getAttribute("hreflang"),
link.getAttribute("referrerpolicy")
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
[
"en-US",
"alternate",
"_blank",
"guide.pdf",
"/audit",
"no-referrer",
"US"
],
"de-DE",
"origin"
])
);
}
#[cfg(feature = "render")]
#[test]
fn ordinary_inline_keeps_computed_sizes_but_uses_content_geometry() {
let dom = parse_html(
r#"<html><head><style>
html,body,p { margin:0 }
#host { width:300px; font-size:16px; line-height:20px }
#token {
position:relative;
width:100%; height:100px;
min-width:100%; min-height:100px;
max-width:100%; max-height:100px;
padding:0 5px; background:red
}
#after { position:relative }
#atomic {
display:inline-block; box-sizing:border-box;
width:80px; height:30px; padding:0; border:0
}
#replaced {
display:inline; box-sizing:border-box;
width:80px; height:30px; min-width:0; min-height:0;
max-width:none; max-height:none; padding:0; border:0
}
#items { display:flex }
#item {
display:inline; box-sizing:border-box; flex:none;
width:90px; height:25px; padding:0; border:0
}
</style></head><body>
<p id="host">A <code id="token">token</code> <span id="after">after</span></p>
<span id="atomic"></span>
<input id="replaced">
<div id="items"><span id="item"></span></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(400.0, 240.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const token = document.getElementById("token");
const after = document.getElementById("after");
const computed = getComputedStyle(token);
const rect = token.getBoundingClientRect();
const afterRect = after.getBoundingClientRect();
const atomic = document.getElementById("atomic").getBoundingClientRect();
const replaced = document.getElementById("replaced").getBoundingClientRect();
const item = document.getElementById("item").getBoundingClientRect();
return {
computed: [
computed.width, computed.height,
computed.minWidth, computed.minHeight,
computed.maxWidth, computed.maxHeight
],
rect: [rect.x, rect.y, rect.width, rect.height],
after: [afterRect.x, afterRect.y],
client: [token.clientWidth, token.clientHeight],
clientRects: Array.from(token.getClientRects(), r => [
r.x, r.y, r.width, r.height
]),
atomic: [atomic.width, atomic.height],
replaced: [replaced.width, replaced.height],
item: [item.width, item.height, getComputedStyle(item).display]
};
"#,
)
.unwrap();
assert_eq!(
result["computed"],
serde_json::json!(["100%", "100px", "100%", "100px", "100%", "100px"])
);
let rect = result["rect"].as_array().unwrap();
let token_x = rect[0].as_f64().unwrap();
let token_y = rect[1].as_f64().unwrap();
let token_width = rect[2].as_f64().unwrap();
let token_height = rect[3].as_f64().unwrap();
assert!(
token_width > 20.0 && token_width < 100.0,
"ordinary inline should hug text and padding: {rect:?}"
);
assert!(token_height < 40.0, "ignored block size leaked into geometry");
assert_eq!(result["client"], serde_json::json!([0, 0]));
let client_rects = result["clientRects"].as_array().unwrap();
assert_eq!(client_rects.len(), 1);
let client_rect = client_rects[0].as_array().unwrap();
for (actual, expected) in client_rect
.iter()
.map(|value| value.as_f64().unwrap())
.zip([token_x, token_y, token_width, token_height])
{
assert!(
(actual - expected).abs() < 0.001,
"getClientRects must expose the renderer's inline fragments"
);
}
let after = result["after"].as_array().unwrap();
assert!(after[0].as_f64().unwrap() >= token_x + token_width - 0.01);
assert!((after[1].as_f64().unwrap() - token_y).abs() < 0.01);
assert_eq!(result["atomic"], serde_json::json!([80, 30]));
assert_eq!(result["replaced"], serde_json::json!([80, 30]));
assert_eq!(result["item"], serde_json::json!([90, 25, "block"]));
}
#[cfg(feature = "render")]
#[test]
fn computed_style_uses_renderer_stylesheet_cascade_and_invalidates() {
let dom = parse_html(
r#"<html><head><style>
.base {
display:flex; position:relative; z-index:7;
visibility:hidden; opacity:.35;
background-color:rgb(10,20,30); color:rgb(40,50,60);
width:120px; height:40px; min-width:20px; max-width:160px;
box-sizing:border-box; overflow-x:clip; overflow-y:visible;
margin:1px 2px 3px 4px; padding:5px 6px 7px 8px;
border:2px solid rgb(70,80,90);
flex-direction:column; flex-wrap:wrap;
align-items:center; justify-content:space-between;
gap:6px 9px; transform:translate(3px,4px);
}
.alt { display:grid; width:150px; opacity:.8; }
</style></head><body><div id="box" class="base"></div></body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(400.0, 200.0);
rt.run_page_init();
let initial = rt
.evaluate(
r#"
const box = document.getElementById("box");
const c = getComputedStyle(box);
return [
c.display, c.position, c.zIndex, c.visibility, c.opacity,
c.backgroundColor, c.getPropertyValue("color"),
c.width, c.height, c.minWidth, c.maxWidth, c.boxSizing,
c.overflowX, c.overflowY,
c.marginTop, c.marginRight, c.marginBottom, c.marginLeft,
c.paddingTop, c.borderLeftWidth, c.borderLeftColor,
c.flexDirection, c.flexWrap, c.alignItems,
c.justifyContent, c.rowGap, c.columnGap, c.transform
];
"#,
)
.unwrap();
assert_eq!(
initial,
serde_json::json!([
"flex", "relative", "7", "hidden", "0.35",
"rgb(10, 20, 30)", "rgb(40, 50, 60)",
"120px", "40px", "20px", "160px", "border-box",
"clip", "visible",
"1px", "2px", "3px", "4px",
"5px", "2px", "rgb(70, 80, 90)",
"column", "wrap", "center",
"space-between", "6px", "9px", "translate(3px, 4px)"
])
);
assert_eq!(
rt.evaluate(
r#"
const box = document.getElementById("box");
box.className = "alt";
const c = getComputedStyle(box);
return [c.display, c.width, c.opacity];
"#,
)
.unwrap(),
serde_json::json!(["grid", "150px", "0.8"])
);
}
#[cfg(feature = "render")]
#[test]
fn webkit_truncation_computed_names_use_native_support_and_vendor_prefixes() {
let dom = parse_html(
r#"<html><head><style>
#clamp { display:-webkit-box; -webkit-box-orient:vertical;
-webkit-line-clamp:2; overflow:hidden; }
#legacy { display:-webkit-inline-box; -webkit-box-orient:horizontal; }
</style></head><body>
<div id="clamp">one two three four five six seven eight</div>
<span id="legacy">legacy</span>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(120.0, 200.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const clamp = getComputedStyle(document.getElementById("clamp"));
const legacy = getComputedStyle(document.getElementById("legacy"));
return {
supports: [
CSS.supports("text-overflow", "ellipsis"),
CSS.supports("-webkit-line-clamp", "2"),
CSS.supports("-webkit-line-clamp", "0"),
CSS.supports("display", "-webkit-box"),
CSS.supports("-webkit-box-orient", "vertical")
],
clamp: [clamp.display, clamp.webkitLineClamp,
clamp.webkitBoxOrient,
clamp.getPropertyValue("-webkit-line-clamp")],
legacy: [legacy.display, legacy.webkitBoxOrient]
};
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!({
"supports": [true, true, false, true, true],
"clamp": ["flow-root", "2", "vertical", "2"],
"legacy": ["-webkit-inline-box", "horizontal"]
})
);
}
#[cfg(feature = "render")]
#[test]
fn computed_typography_uses_resolved_renderer_values() {
let dom = parse_html(
r#"<html><head><style>
#parent {
font-size:20px; line-height:1.5;
letter-spacing:-.05em; white-space:pre-wrap;
text-align:end
}
#child { font-size:10px }
#zero { letter-spacing:0px; white-space:break-spaces }
</style></head><body>
<div id="parent"><span id="child">child</span></div>
<div id="zero">zero</div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(400.0, 200.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const sample = id => {
const s = getComputedStyle(document.getElementById(id));
return [s.lineHeight, s.letterSpacing, s.whiteSpace, s.textAlign];
};
return [sample("parent"), sample("child"), sample("zero")];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
["30px", "-1px", "pre-wrap", "end"],
["15px", "-1px", "pre-wrap", "end"],
["normal", "normal", "break-spaces", "start"],
])
);
}
#[cfg(feature = "render")]
#[test]
fn computed_style_exposes_cascaded_custom_properties_and_invalidates() {
let dom = parse_html(
r#"<html><head><style>
:root { --inherited-space: 17px; --derived-space: var(--inherited-space); }
#nav {
--r-globalnav-font-size:17px;
--local-scale:1.25;
font-size:var(--r-globalnav-font-size);
}
</style></head><body>
<nav id="nav"><span id="child"></span></nav>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(400.0, 200.0);
rt.run_page_init();
assert_eq!(
rt.evaluate(
r#"
const nav = document.getElementById("nav");
const child = document.getElementById("child");
const navStyle = getComputedStyle(nav);
const childStyle = getComputedStyle(child);
let enumeratesBase = false;
for (let i = 0; i < navStyle.length; i++) {
if (navStyle.item(i) === "--r-globalnav-font-size")
enumeratesBase = true;
}
return [
navStyle.fontSize,
navStyle.getPropertyValue("--r-globalnav-font-size"),
parseInt(navStyle.fontSize) /
parseInt(navStyle.getPropertyValue("--r-globalnav-font-size")),
navStyle.getPropertyValue("--inherited-space"),
navStyle.getPropertyValue("--derived-space"),
navStyle.getPropertyValue("--local-scale"),
childStyle.getPropertyValue("--inherited-space"),
childStyle.getPropertyValue("--local-scale"),
enumeratesBase
];
"#,
)
.unwrap(),
serde_json::json!([
"17px", "17px", 1,
"17px", "17px", "1.25", "17px", "1.25", true
])
);
assert_eq!(
rt.evaluate(
r#"
const nav = document.getElementById("nav");
const computed = getComputedStyle(nav);
nav.style.setProperty("--inherited-space", "23px");
nav.style.fontSize = "19px";
return [
computed.fontSize,
computed.getPropertyValue("--inherited-space"),
computed.getPropertyValue("--derived-space")
];
"#,
)
.unwrap(),
serde_json::json!(["19px", "23px", "17px"])
);
}
#[tokio::test(flavor = "current_thread")]
async fn idle_event_loop_flushes_resolved_promise_continuations() {
let mut rt = setup_runtime("<html><body><div id='state'>pending</div></body></html>");
rt.execute_script(
"font-ready",
"document.fonts.load('normal 1px Example').then(() => {\
document.getElementById('state').textContent = 'ready';\
});",
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("document.getElementById('state').textContent")
.unwrap(),
serde_json::json!("ready")
);
}
#[test]
fn font_face_set_tracks_authored_and_script_created_faces() {
let mut rt = setup_runtime(
r#"<html><head><style>
@font-face {
font-family: "Authored One";
src: url("https://assets.test/one.woff2") format("woff2");
font-weight: 350 650;
}
@font-face {
font-family: AuthoredTwo;
src: url(data:font/woff2;base64,d09GMg==);
font-style: italic;
}
</style></head><body></body></html>"#,
);
let result = rt
.evaluate(
r#"(() => {
const authored = Array.from(document.fonts);
const cssDelete = document.fonts.delete(authored[0]);
const dynamic = new FontFace("Dynamic", "url('/dynamic.ttf')", {
style: "oblique 12deg",
weight: "700",
stretch: "condensed",
unicodeRange: "U+20-7E",
display: "swap"
});
const addResult = document.fonts.add(dynamic);
const visited = [];
document.fonts.forEach((value, key, set) => {
visited.push(value === key && set === document.fonts);
});
const afterAdd = [
document.fonts.size,
document.fonts.has(dynamic),
addResult === document.fonts,
dynamic.family,
dynamic.style,
dynamic.weight,
dynamic.stretch,
dynamic.unicodeRange,
dynamic.display,
visited.every(Boolean)
];
const deleted = document.fonts.delete(dynamic);
document.fonts.clear();
const bytes = new Uint8Array([0, 1, 2, 253, 254, 255]);
const binary = new FontFace("Binary", bytes, { weight: 600 });
return [
authored.length,
authored.map(face => face.family),
cssDelete,
afterAdd,
deleted,
document.fonts.size,
binary.status,
binary.loaded === binary.load()
];
})()"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
2,
["Authored One", "AuthoredTwo"],
false,
[3, true, true, "Dynamic", "oblique 12deg", "700", "condensed", "U+20-7E", "swap", true],
true,
2,
"loaded",
true
])
);
}
#[tokio::test(flavor = "current_thread")]
async fn font_face_load_updates_status_set_readiness_and_matching() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"font-face-lifecycle",
r#"
globalThis.__fontEvents = [];
const face = new FontFace("Lifecycle", "url('/lifecycle.woff2')", {
weight: "700"
});
document.fonts.onloading = event => __fontEvents.push([event.type, event.fontfaces.length]);
document.fonts.onloadingdone = event => __fontEvents.push([event.type, event.fontfaces.length]);
document.fonts.add(face);
globalThis.__fontBefore = [
face.status,
document.fonts.status,
document.fonts.check("700 16px Lifecycle")
];
globalThis.__fontLoadResult = "pending";
document.fonts.load("700 16px Lifecycle").then(faces => {
__fontLoadResult = [faces.length, faces[0] === face, face.status,
document.fonts.check("700 16px Lifecycle")];
});
document.fonts.ready.then(set => {
globalThis.__fontReady = set === document.fonts;
});
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
let result = rt
.evaluate(
"return [__fontBefore, __fontLoadResult, __fontReady, __fontEvents];",
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
["unloaded", "loaded", false],
[1, true, "loaded", true],
true,
[["loading", 1], ["loadingdone", 1]]
])
);
}
#[test]
fn animation_frame_requires_a_callable_callback() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"(() => {
try {
requestAnimationFrame(null);
return [false, ""];
} catch (error) {
return [error instanceof TypeError, error.name];
}
})()"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([true, "TypeError"]));
}
#[tokio::test(flavor = "current_thread")]
async fn animation_frames_are_ordered_batches_with_rendering_timestamps() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"animation-frame-order",
r#"
globalThis.__rafEvents = [];
globalThis.__rafStamps = [];
Promise.resolve().then(() => __rafEvents.push("microtask-before"));
setTimeout(() => __rafEvents.push("timer"), 1);
requestAnimationFrame((timestamp) => {
__rafEvents.push("raf-a");
__rafStamps.push(timestamp);
Promise.resolve().then(() => __rafEvents.push("microtask-in-raf"));
requestAnimationFrame((nextTimestamp) => {
__rafEvents.push("raf-next");
__rafStamps.push(nextTimestamp);
});
});
requestAnimationFrame((timestamp) => {
__rafEvents.push("raf-b");
__rafStamps.push(timestamp);
});
"#,
)
.unwrap();
rt.run_event_loop_bounded(150).await.unwrap();
let result = rt
.evaluate(
r#"[
__rafEvents,
__rafStamps.length,
__rafStamps[0] === __rafStamps[1],
__rafStamps[2] > __rafStamps[1]
]"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
[
"microtask-before",
"timer",
"raf-a",
"raf-b",
"microtask-in-raf",
"raf-next"
],
3,
true,
true
])
);
}
#[tokio::test(flavor = "current_thread")]
async fn cancel_animation_frame_removes_pending_and_current_batch_callbacks() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"animation-frame-cancel",
r#"
globalThis.__rafEvents = [];
const pending = requestAnimationFrame(() => __rafEvents.push("pending"));
cancelAnimationFrame(pending);
let sameBatch;
requestAnimationFrame(() => {
__rafEvents.push("first");
cancelAnimationFrame(sameBatch);
});
sameBatch = requestAnimationFrame(() => __rafEvents.push("same-batch"));
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("__rafEvents").unwrap(),
serde_json::json!(["first"])
);
}
#[tokio::test(flavor = "current_thread")]
async fn self_requeueing_animation_frame_yields_to_timer_tasks() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"animation-frame-yield",
r#"
globalThis.__rafCount = 0;
globalThis.__rafStopped = false;
globalThis.__timerAfterAnimation = false;
let frameId = 0;
function frame() {
__rafCount++;
frameId = requestAnimationFrame(frame);
}
frameId = requestAnimationFrame(frame);
setTimeout(() => {
cancelAnimationFrame(frameId);
__rafStopped = true;
}, 55);
setTimeout(() => {
__timerAfterAnimation = true;
}, 65);
"#,
)
.unwrap();
rt.run_event_loop_bounded(200).await.unwrap();
let result = rt
.evaluate("[__rafCount, __rafStopped, __timerAfterAnimation]")
.unwrap();
let values = result.as_array().unwrap();
let frame_count = values[0].as_u64().unwrap();
assert!(
(2..=5).contains(&frame_count),
"expected a few paced animation frames before cancellation, got {frame_count}"
);
assert_eq!(values[1], serde_json::json!(true));
assert_eq!(values[2], serde_json::json!(true));
}
#[test]
fn test_document_url() {
let mut rt = setup_runtime("<html><body></body></html>");
let url = rt.evaluate("document.URL").unwrap();
assert_eq!(url, serde_json::json!("http://example.com/test"));
}
#[test]
fn test_query_selector() {
let mut rt = setup_runtime("<html><body><h1>Hello</h1><p>World</p></body></html>");
let text = rt.evaluate("document.querySelector('h1').textContent").unwrap();
assert_eq!(text, serde_json::json!("Hello"));
}
#[test]
fn test_query_selector_all() {
let mut rt = setup_runtime("<ul><li>A</li><li>B</li><li>C</li></ul>");
let count = rt.evaluate("document.querySelectorAll('li').length").unwrap();
assert_eq!(count.as_f64().unwrap() as i64, 3);
}
#[test]
fn css_supports_matches_capabilities_and_boolean_conditions() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"JSON.stringify([
CSS.supports("-webkit-hyphens", "none"),
CSS.supports("margin-trim", "inline"),
CSS.supports("-moz-orient", "inline"),
CSS.supports("color", "rgb(from red r g b)"),
CSS.supports("(((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b))))"),
CSS.supports("display", "grid"),
CSS.supports("(display:grid) and (selector(.card > *))"),
CSS.supports("not (unknown-engine-prop:value)"),
CSS.supports("selector(.card >)"),
CSS.supports("selector(:obscura-unknown)"),
CSS.supports("selector(.card,)"),
CSS.supports("scrollbar-gutter", "stable"),
CSS.supports("scrollbar-gutter", "floating"),
CSS.supports("color", "light-dark(rgb(1, 2, 3), color-mix(in srgb, white 50%, black))"),
CSS.supports("(color:light-dark(red, light-dark(white, black)))"),
CSS.supports("color", "light-dark(red)"),
CSS.supports("color", "light-dark(red, rgb(1, 2, 3)"),
CSS.supports("border", "2px dashed red"),
CSS.supports("border-width", "10%"),
CSS.supports("word-break", "break-all"),
CSS.supports("filter", "blur(2px)"),
CSS.supports("content", "attr(data-label)"),
CSS.supports("display", "grid;")
])"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!("[false,false,false,false,false,true,true,true,false,false,false,true,false,true,true,false,false,true,false,true,false,true,false]")
);
}
#[test]
fn test_get_element_by_id() {
let mut rt = setup_runtime(r#"<div id="test">Content</div>"#);
let tag = rt.evaluate("document.getElementById('test').tagName").unwrap();
assert_eq!(tag, serde_json::json!("DIV"));
}
#[test]
fn attributes_named_node_map_is_live() {
let mut rt = setup_runtime(r#"<div id="test" class="card" data-state="ready"></div>"#);
let result = rt
.evaluate(
r#"
const element = document.getElementById("test");
const attributes = element.attributes;
const sameObject = attributes === element.attributes;
const firstName = attributes[0].name;
let removed = 0;
while (attributes.length) {
element.removeAttributeNode(attributes[0]);
removed++;
if (removed > 10) throw new Error("NamedNodeMap is not live");
}
return {
sameObject,
namedNodeMap: attributes instanceof NamedNodeMap,
firstName,
removed,
length: attributes.length,
hasAttributes: element.hasAttributes(),
};
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!({
"sameObject": true,
"namedNodeMap": true,
"firstName": "id",
"removed": 3,
"length": 0,
"hasAttributes": false,
})
);
}
#[test]
fn element_scroll_methods_update_scroll_offsets() {
let mut rt = setup_runtime(r#"<div id="scroller"></div>"#);
let result = rt
.evaluate(
r#"
const element = document.getElementById("scroller");
element.scrollTo({left: 12, top: 20, behavior: "smooth"});
element.scrollBy(3, -5);
element.scroll({left: 7});
return {
left: element.scrollLeft,
top: element.scrollTop,
methods: [
typeof element.scroll,
typeof element.scrollTo,
typeof element.scrollBy,
],
};
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!({
"left": 7,
"top": 15,
"methods": ["function", "function", "function"],
})
);
}
#[test]
fn document_fragment_get_element_by_id_searches_descendants() {
let mut rt = setup_runtime(r#"<div id="target">document</div>"#);
let result = rt
.evaluate(
r#"
(() => {
const frag = document.createDocumentFragment();
const section = document.createElement('section');
section.innerHTML = '<div><span id="target">fragment</span></div><p id="a.b">literal</p>';
frag.appendChild(section);
const dup = document.createDocumentFragment();
const deepParent = document.createElement('div');
deepParent.innerHTML = '<span id="dup">deep</span>';
const shallow = document.createElement('p');
shallow.id = 'dup';
shallow.textContent = 'shallow';
dup.appendChild(deepParent);
dup.appendChild(shallow);
return [
frag.getElementById('target').textContent,
frag.getElementById('missing') === null,
frag.getElementById('a.b').textContent,
frag.getElementById(123) === null,
dup.getElementById('dup').textContent,
];
})()
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!(["fragment", true, "literal", true, "deep"])
);
}
/// Issue #461: FILTER_REJECT must prune the rejected node's whole subtree,
/// while FILTER_SKIP only skips the node and leaves descendants eligible.
/// Collapsing both into "not accepted" let a TreeWalker yield nodes from
/// inside a subtree the page explicitly rejected.
#[test]
fn tree_walker_filter_reject_prunes_the_whole_subtree() {
let mut rt = setup_runtime(
r#"<div id="root"><section><p>deep</p></section><a></a></div>"#,
);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
function walk(verdict) {
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION' ? verdict : NodeFilter.FILTER_ACCEPT;
}
});
const seen = [];
let node;
while ((node = w.nextNode())) seen.push(node.tagName);
return seen;
}
return [walk(NodeFilter.FILTER_REJECT), walk(NodeFilter.FILTER_SKIP)];
"#,
)
.unwrap();
// REJECT drops <p> with its <section> parent; SKIP drops only <section>.
assert_eq!(result, serde_json::json!([["A"], ["P", "A"]]));
}
/// Issue #462: previousNode() must walk reverse document order until a node
/// is accepted, not give up as soon as the first candidate is filtered out.
#[test]
fn previous_node_walks_reverse_document_order() {
let mut rt = setup_runtime(r#"<div id="root"><a><b></b></a><c></c></div>"#);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'B'
? NodeFilter.FILTER_SKIP
: NodeFilter.FILTER_ACCEPT;
}
});
const forward = [];
let node;
while ((node = w.nextNode())) forward.push(node.tagName);
const backward = [];
while ((node = w.previousNode())) backward.push(node.tagName);
return [forward, backward];
"#,
)
.unwrap();
// From <c>, the previous sibling's deepest last child <b> is skipped, so
// the walk must keep going up to <a> instead of returning null.
assert_eq!(result, serde_json::json!([["A", "C"], ["A"]]));
}
/// Issue #462: a backward walk must retrace a forward walk exactly, and stop
/// at the root without ever returning it.
#[test]
fn previous_node_retraces_a_full_forward_walk() {
let mut rt = setup_runtime(
r#"<div id="root"><section><p>one</p><span></span></section><a><b></b></a></div>"#,
);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
const forward = [];
let node;
while ((node = w.nextNode())) forward.push(node.tagName);
const backward = [];
while ((node = w.previousNode())) backward.push(node.tagName);
backward.reverse();
// previousNode never yields root, and never yields the node the
// forward walk ended on, so compare against forward minus its last.
// A failed traversal leaves currentNode untouched (DOM 6.1), so
// it stays on the last node previousNode did return.
return [forward, backward, w.currentNode.tagName];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
["SECTION", "P", "SPAN", "A", "B"],
["SECTION", "P", "SPAN", "A"],
"SECTION"
])
);
}
/// Issue #462: FILTER_REJECT prunes a subtree in the backward direction too
/// — the descent into a rejected node's last children must stop.
#[test]
fn previous_node_honours_filter_reject_subtree_pruning() {
let mut rt = setup_runtime(
r#"<div id="root"><a></a><section><p>deep</p></section><c></c></div>"#,
);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION'
? NodeFilter.FILTER_REJECT
: NodeFilter.FILTER_ACCEPT;
}
});
while (w.nextNode()) { /* advance to the last accepted node */ }
const backward = [];
let node;
while ((node = w.previousNode())) backward.push(node.tagName);
return backward;
"#,
)
.unwrap();
// <p> lives inside the rejected <section>, so the backward walk from <c>
// must jump straight to <a>.
assert_eq!(result, serde_json::json!(["A"]));
}
/// Issue #461: NodeIterator has no subtree pruning — DOM 6.2 says
/// FILTER_REJECT behaves as FILTER_SKIP there. The shared walker must not
/// Issue #475: parentNode() must never surface a node above `root`. With
/// currentNode at root, the old guard stepped to root's own parent and
/// returned it — escaping the walker's subtree entirely.
#[test]
fn tree_walker_parent_node_does_not_escape_above_root() {
let mut rt = setup_runtime(r#"<div id="root"><a></a></div>"#);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
const escaped = w.parentNode();
return [escaped, w.currentNode.id];
"#,
)
.unwrap();
// No parent within the subtree, and currentNode stays put at root.
assert_eq!(result, serde_json::json!([null, "root"]));
}
/// Issue #475: when the accepted ancestor is `root` itself, parentNode()
/// returns it and moves currentNode there — the old `parent !== root` guard
/// wrongly excluded it.
#[test]
fn tree_walker_parent_node_can_return_the_root() {
let mut rt = setup_runtime(r#"<div id="root"><a></a></div>"#);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
w.currentNode = root.querySelector('a');
const p = w.parentNode();
return [p ? p.id : null, w.currentNode === root];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["root", true]));
}
/// Issue #475: parentNode() climbs past a skipped ancestor to the first
/// accepted one, instead of stopping at the immediate parent.
#[test]
fn tree_walker_parent_node_climbs_past_skipped_ancestors() {
let mut rt = setup_runtime(
r#"<div id="root"><main id="m"><section><a></a></section></main></div>"#,
);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(n) {
return n.tagName === 'SECTION'
? NodeFilter.FILTER_SKIP
: NodeFilter.FILTER_ACCEPT;
}
});
w.currentNode = root.querySelector('a');
const p = w.parentNode();
return p ? p.id : null;
"#,
)
.unwrap();
// <a>'s parent <section> is skipped, so <main> is the first accepted
// ancestor — not null, and not the immediate <section>.
assert_eq!(result, serde_json::json!("m"));
}
/// leak TreeWalker's pruning into it.
#[test]
fn node_iterator_treats_filter_reject_as_skip() {
let mut rt = setup_runtime(
r#"<div id="root"><section><p>deep</p></section><a></a></div>"#,
);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION'
? NodeFilter.FILTER_REJECT
: NodeFilter.FILTER_ACCEPT;
}
});
const seen = [];
let node;
while ((node = it.nextNode())) seen.push(node.tagName);
return seen;
"#,
)
.unwrap();
// The rejected <section> is skipped but not pruned, so <p> still shows.
// The leading root is #467: an iterator yields the node it is rooted at.
assert_eq!(result, serde_json::json!(["DIV", "P", "A"]));
}
/// Issue #467: a NodeIterator starts *before* its root, so the first
/// nextNode() returns the root itself. Aliasing createTreeWalker silently
/// dropped exactly the element the iterator was rooted at.
#[test]
fn node_iterator_yields_the_root_node_first() {
let mut rt = setup_runtime(r#"<div id="root"><a></a></div>"#);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT);
const seen = [];
let node;
while ((node = it.nextNode())) seen.push(node.tagName);
return seen;
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["DIV", "A"]));
}
/// Issue #467: the NodeIterator interface surface, and that TreeWalker-only
/// members are not exposed on it.
#[test]
fn node_iterator_exposes_its_own_interface() {
let mut rt = setup_runtime(r#"<div id="root"><a></a></div>"#);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT);
const before = [it.referenceNode === root, it.pointerBeforeReferenceNode];
it.nextNode();
return [
before,
typeof it.detach,
it.detach() === undefined,
typeof it.previousNode,
it.root === root,
it.whatToShow,
// TreeWalker-only members must not leak onto a NodeIterator.
typeof it.currentNode,
typeof it.firstChild,
typeof it.parentNode,
// The pointer advanced past the root it just returned.
[it.referenceNode.tagName, it.pointerBeforeReferenceNode],
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
[true, true],
"function",
true,
"function",
true,
1,
"undefined",
"undefined",
"undefined",
["DIV", false]
])
);
}
/// Issue #467: previousNode() retraces the iterator, and the root is the
/// last node it yields going backwards.
#[test]
fn node_iterator_previous_node_retraces_the_walk() {
let mut rt = setup_runtime(r#"<div id="root"><a><b></b></a><c></c></div>"#);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const it = document.createNodeIterator(root, NodeFilter.SHOW_ELEMENT);
const forward = [];
let node;
while ((node = it.nextNode())) forward.push(node.tagName);
const backward = [];
while ((node = it.previousNode())) backward.push(node.tagName);
return [forward, backward];
"#,
)
.unwrap();
// Forward ends on <c>; going back re-yields <c> (the pointer sits after
// it), then the rest in reverse, root included.
assert_eq!(
result,
serde_json::json!([
["DIV", "A", "B", "C"],
["C", "B", "A", "DIV"]
])
);
}
/// Issue #463: `<template>` contents are parsed into the node's
/// `template_contents` document, but no op exposed it, so `.content` handed
/// back a fabricated empty fragment and the parsed markup was unreachable.
#[test]
fn template_content_exposes_parsed_markup() {
let mut rt = setup_runtime(
r#"<body><template id="t"><p class="row">a</p><p class="row">b</p></template></body>"#,
);
let result = rt
.evaluate(
r#"
const t = document.getElementById('t');
return [
t.content.childNodes.length,
t.content.querySelectorAll('.row').length,
t.content.firstElementChild.textContent,
t.innerHTML,
t.content.nodeType,
t.content instanceof DocumentFragment,
// Identity is stable: frameworks stash `.content` and reuse it.
t.content === t.content,
// The children stay off the element itself, per the HTML spec.
t.childNodes.length,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
2,
2,
"a",
r#"<p class="row">a</p><p class="row">b</p>"#,
11,
true,
true,
0
])
);
}
/// Setting innerHTML on the <html> element parses in the "before head"
/// insertion mode, which synthesizes head and body. The importer must keep
/// both; it previously returned the synthesized body and dropped the head
/// (so a <title>/<meta> assigned this way vanished).
#[test]
fn documentelement_inner_html_keeps_head_and_body() {
let mut rt = setup_runtime("<html><head></head><body></body></html>");
let v = rt
.evaluate(
"(function(){ document.documentElement.innerHTML = '<head><title>T</title></head><body><p>hi</p></body>'; \
var t = document.querySelector('title'); var p = document.querySelector('p'); \
return (t ? t.textContent : 'no-title') + '|' + (p ? p.textContent : 'no-p'); })()",
)
.unwrap();
assert_eq!(v, serde_json::json!("T|hi"));
}
/// Regression guard: innerHTML on an ordinary element still imports the
/// parsed nodes directly (no head/body is synthesized for a div context),
/// so the fix above must not change the common case.
#[test]
fn ordinary_element_inner_html_imports_content_directly() {
let mut rt = setup_runtime("<html><body><div id=\"d\"></div></body></html>");
let v = rt
.evaluate(
"(function(){ var d=document.getElementById('d'); d.innerHTML='<span>a</span><span>b</span>'; \
return d.children.length + '|' + d.textContent; })()",
)
.unwrap();
assert_eq!(v, serde_json::json!("2|ab"));
}
/// Issue #463: the same must hold for a template that arrives via innerHTML
/// rather than the initial document parse — that is how most frameworks
/// inject templates.
#[test]
fn template_content_works_for_templates_added_via_inner_html() {
let mut rt = setup_runtime(r#"<body><div id="host"></div></body>"#);
let result = rt
.evaluate(
r#"
const host = document.getElementById('host');
host.innerHTML = '<template id="t2"><li class="item">x</li></template>';
const t = document.getElementById('t2');
const stamped = t.content.cloneNode(true);
host.appendChild(stamped);
return [
t.content.childNodes.length,
t.content.querySelector('.item').textContent,
host.querySelectorAll('li.item').length,
];
"#,
)
.unwrap();
// cloneNode(true) of the content is the canonical stamping idiom.
assert_eq!(result, serde_json::json!([1, "x", 1]));
}
/// Issue #463: a template built with createElement has no parsed contents,
/// so `.content` must allocate a backing fragment on demand and round-trip
/// through innerHTML.
#[test]
fn template_content_round_trips_for_created_templates() {
let mut rt = setup_runtime(r#"<body></body>"#);
let result = rt
.evaluate(
r#"
const t = document.createElement('template');
t.innerHTML = '<span class="s">hi</span>';
return [
t.content.childNodes.length,
t.content.querySelector('.s').textContent,
t.innerHTML,
t.childNodes.length,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([1, "hi", r#"<span class="s">hi</span>"#, 0])
);
}
/// Issue #463: serializing a `<template>` must emit its contents, or the
/// markup silently disappears from outerHTML/innerHTML round-trips — and
/// `cloneNode(true)`, which round-trips through outer_html, yields an empty
/// template.
#[test]
fn template_contents_survive_serialization_and_clone() {
let mut rt = setup_runtime(
r#"<body><template id="t"><li class="item">x</li></template></body>"#,
);
let result = rt
.evaluate(
r#"
const t = document.getElementById('t');
const clone = t.cloneNode(true);
return [
t.outerHTML,
document.body.innerHTML,
clone.content.childNodes.length,
clone.content.querySelector('.item').textContent,
// The clone's contents are its own, not shared with the original.
(clone.content.firstElementChild === t.content.firstElementChild),
];
"#,
)
.unwrap();
let expected = r#"<template id="t"><li class="item">x</li></template>"#;
assert_eq!(
result,
serde_json::json!([expected, expected, 1, "x", false])
);
}
/// Issue #468: window.scrollTo/scrollBy/scroll were no-op stubs, so the
/// dominant infinite-scroll idiom never advanced the page offset.
#[cfg(not(feature = "render"))]
#[test]
fn window_scroll_methods_move_the_page_offset() {
let mut rt = setup_runtime(r#"<html><body><div id="d"></div></body></html>"#);
let result = rt
.evaluate(
r#"
const scrolled = window.scrollTo(0, 500);
const afterTo = [window.scrollX, window.scrollY];
window.scrollBy(0, 200);
const afterBy = [window.pageXOffset, window.pageYOffset];
window.scrollTo({ left: 10, top: 40 });
const afterOptions = [window.scrollX, window.scrollY];
window.scroll(5, 5);
const afterScroll = [window.scrollX, window.scrollY];
// Negative offsets clamp to 0, as they do for elements.
window.scrollTo(0, -100);
return [afterTo, afterBy, afterOptions, afterScroll, window.scrollY];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([[0, 500], [0, 700], [10, 40], [5, 5], 0])
);
}
/// Issue #468: the page offset is one value, readable and writable through
/// either `window.scrollY` or `document.scrollingElement.scrollTop`.
#[cfg(not(feature = "render"))]
#[test]
fn window_scroll_offset_is_shared_with_the_scrolling_element() {
let mut rt = setup_runtime(r#"<html><body><div id="d"></div></body></html>"#);
let result = rt
.evaluate(
r#"
const isDocEl = document.scrollingElement === document.documentElement;
window.scrollTo(0, 300);
// Written through the window, read through the element...
const viaElement = document.scrollingElement.scrollTop;
// ...and the reverse.
document.scrollingElement.scrollTop = 90;
return [isDocEl, viaElement, window.scrollY, window.pageYOffset];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([true, 300, 90, 90]));
}
/// Issue #468: a scroll event must reach listeners on both the window and
/// the document — that is the signal lazy loaders wait for.
#[cfg(not(feature = "render"))]
#[tokio::test(flavor = "current_thread")]
async fn window_scroll_fires_a_scroll_event() {
let mut rt = setup_runtime(r#"<html><body><div id="d"></div></body></html>"#);
let result = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
let win = 0, doc = 0;
window.addEventListener('scroll', () => win++);
document.addEventListener('scroll', () => doc++);
window.scrollBy(0, 400);
setTimeout(() => resolve([win, doc, window.scrollY]), 5);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!([1, 1, 400]));
}
#[cfg(feature = "render")]
#[test]
fn rendered_window_scroll_clamps_and_geometry_is_viewport_relative() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="wide" style="width:600px;height:700px"></div>
<div id="target" style="width:20px;height:300px"></div>
<div id="fixed" style="position:fixed;left:12px;top:14px;width:30px;height:25px">
<span id="fixed-child">fixed</span>
</div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(320.0, 200.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const target = document.getElementById("target");
const fixed = document.getElementById("fixed");
const fixedChild = document.getElementById("fixed-child");
const before = {
target: target.getBoundingClientRect(),
fixed: fixed.getBoundingClientRect(),
fixedChild: fixedChild.getBoundingClientRect(),
};
window.scrollTo(99999, 99999);
const maxX = document.documentElement.scrollWidth - innerWidth;
const maxY = document.documentElement.scrollHeight - innerHeight;
const after = {
target: target.getBoundingClientRect(),
fixed: fixed.getBoundingClientRect(),
fixedChild: fixedChild.getBoundingClientRect(),
};
return [
innerWidth, innerHeight,
document.documentElement.clientWidth,
document.documentElement.clientHeight,
document.documentElement.scrollWidth,
document.documentElement.scrollHeight,
window.scrollX, window.scrollY,
document.scrollingElement.scrollLeft,
document.scrollingElement.scrollTop,
maxX, maxY,
Math.abs(after.target.left - (before.target.left - maxX)) < 0.01,
Math.abs(after.target.top - (before.target.top - maxY)) < 0.01,
Math.abs(after.fixed.left - before.fixed.left) < 0.01,
Math.abs(after.fixed.top - before.fixed.top) < 0.01,
Math.abs(after.fixedChild.left - before.fixedChild.left) < 0.01,
Math.abs(after.fixedChild.top - before.fixedChild.top) < 0.01,
];
"#,
)
.unwrap();
let values = result.as_array().expect("array");
assert_eq!(&values[0..4], &serde_json::json!([320, 200, 320, 200]).as_array().unwrap()[..]);
let scroll_width = values[4].as_f64().expect("scrollWidth");
let scroll_height = values[5].as_f64().expect("scrollHeight");
assert!(scroll_width >= 600.0, "scrollWidth was {scroll_width}");
assert!(scroll_height >= 1000.0, "scrollHeight was {scroll_height}");
assert_eq!(values[6], values[10]);
assert_eq!(values[7], values[11]);
assert_eq!(values[8], values[10]);
assert_eq!(values[9], values[11]);
assert!(values[12..].iter().all(|value| value == &serde_json::json!(true)));
}
/// CSSOM View exposes the viewport through the standards-mode root, but
/// ordinary elements (including body) report their padding box. Modern
/// animation libraries commonly measure a fixed 100vh sentinel through
/// clientHeight; the old synthetic 100x20 fallback collapsed all of their
/// viewport-relative trigger ranges.
#[cfg(feature = "render")]
#[test]
fn rendered_client_metrics_use_the_live_padding_box() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="tracker"
style="position:fixed;top:0;width:100%;height:100vh"></div>
<div id="box"
style="box-sizing:content-box;width:100.4px;height:50.6px;
padding:5px 8.2px 6px 7.2px;
border-style:solid;
border-width:2px 4.1px 3px 3.1px"></div>
<div style="height:900px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(320.0, 200.0);
rt.run_page_init();
let initial = rt
.evaluate(
r#"
const tracker = document.getElementById("tracker");
const box = document.getElementById("box");
return {
root: [
document.documentElement.clientWidth,
document.documentElement.clientHeight
],
body: [document.body.clientWidth, document.body.clientHeight],
tracker: [
tracker.clientWidth, tracker.clientHeight,
tracker.offsetWidth, tracker.offsetHeight
],
box: [
box.clientWidth, box.clientHeight,
box.getBoundingClientRect().width,
box.getBoundingClientRect().height
]
};
"#,
)
.unwrap();
assert_eq!(initial["root"], serde_json::json!([320, 200]));
assert_eq!(initial["body"], serde_json::json!([320, 967]));
assert_eq!(initial["tracker"], serde_json::json!([320, 200, 320, 200]));
assert_eq!(initial["box"][0], serde_json::json!(116));
assert_eq!(initial["box"][1], serde_json::json!(62));
assert!((initial["box"][2].as_f64().unwrap() - 123.0).abs() < 0.05);
assert_eq!(initial["box"][3], serde_json::json!(67));
// Attribute-backed inline-style changes invalidate the retained
// render. Borders do not change the padding box; padding does.
let mutated = rt
.evaluate(
r#"
const tracker = document.getElementById("tracker");
const box = document.getElementById("box");
tracker.style.height = "50vh";
box.style.borderLeftWidth = "13px";
box.style.paddingLeft = "17px";
return [
tracker.clientHeight,
box.clientWidth,
box.getBoundingClientRect().width
];
"#,
)
.unwrap();
assert_eq!(mutated[0], serde_json::json!(100));
assert_eq!(mutated[1], serde_json::json!(126));
assert_eq!(mutated[2], serde_json::json!(143));
// A later CDP/emulation viewport update invalidates the layout too;
// both the root special case and an ordinary 100vh box are live.
rt.set_viewport(640.0, 360.0);
assert_eq!(
rt.evaluate(
r#"const tracker = document.getElementById("tracker");
return [
document.documentElement.clientWidth,
document.documentElement.clientHeight,
tracker.clientWidth,
tracker.clientHeight
]"#,
)
.unwrap(),
serde_json::json!([640, 360, 640, 180])
);
}
/// CSSOM View distinguishes "no associated CSS box" from a real box whose
/// dimensions happen to be zero. Blink and Gecko return an all-zero
/// bounding rect and no client rects for display:none/detached elements;
/// a laid-out zero-size box still contributes one client rect.
#[cfg(feature = "render")]
#[test]
fn rendered_cssom_rects_distinguish_no_box_from_zero_size_box() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="hidden" style="display:none;width:80px;height:40px"></div>
<div id="zero" style="display:block;width:0;height:0"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(320.0, 200.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const hidden = document.getElementById("hidden");
const detached = document.createElement("div");
detached.style.cssText = "display:block;width:90px;height:50px";
const zero = document.getElementById("zero");
const sample = element => {
const rect = element.getBoundingClientRect();
const rects = element.getClientRects();
return {
rect: [
rect.x, rect.y, rect.width, rect.height,
rect.top, rect.right, rect.bottom, rect.left
],
rectCount: rects.length,
firstWidth: rects.length ? rects[0].width : null,
};
};
return {
hidden: sample(hidden),
detached: sample(detached),
zero: sample(zero),
};
"#,
)
.unwrap();
for name in ["hidden", "detached"] {
assert_eq!(
result[name]["rect"],
serde_json::json!([0, 0, 0, 0, 0, 0, 0, 0]),
"{name} must expose the CSSOM View no-box bounding rect"
);
assert_eq!(
result[name]["rectCount"],
serde_json::json!(0),
"{name} must expose an empty client rect list"
);
assert_eq!(result[name]["firstWidth"], serde_json::Value::Null);
}
assert_eq!(result["zero"]["rect"][2], serde_json::json!(0));
assert_eq!(result["zero"]["rect"][3], serde_json::json!(0));
assert_eq!(
result["zero"]["rectCount"],
serde_json::json!(1),
"a real zero-size layout box must not be mistaken for no box"
);
assert_eq!(result["zero"]["firstWidth"], serde_json::json!(0));
}
#[cfg(not(feature = "render"))]
#[test]
fn non_render_cssom_rects_keep_compatibility_geometry() {
let mut rt = setup_runtime(r#"<html><body><div id="box"></div></body></html>"#);
let result = rt
.evaluate(
r#"
const box = document.getElementById("box");
const detached = document.createElement("div");
return [box, detached].map(element => {
const rect = element.getBoundingClientRect();
return [rect.width, rect.height, element.getClientRects().length];
});
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([[100, 20, 1], [100, 20, 1]]));
}
/// Chromium 150 reference (800x513 CSS-pixel viewport):
/// top=[60,20,20,-267], bottom=[448,448,231,31,-496] at the sampled
/// root scroll offsets. This keeps sticky distinct from fixed positioning,
/// verifies subtree movement, bottom-only sticking, and the containing
/// block's lower boundary without depending on a live site.
#[cfg(feature = "render")]
#[test]
fn root_scroll_sticky_geometry_matches_chromium_constraints() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="height:40px"></div>
<div id="cb" style="box-sizing:border-box;height:900px;padding:10px 12px;border:4px solid #333">
<div id="top" style="box-sizing:border-box;position:sticky;top:20px;height:60px;margin:6px">
<div id="top-child" style="height:12px"></div>
</div>
<div style="height:500px"></div>
<div id="bottom" style="box-sizing:border-box;position:sticky;bottom:15px;height:50px;margin:5px"></div>
</div>
<div style="height:700px"></div>
<div id="fixed" style="position:fixed;left:600px;top:20px;width:60px;height:60px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(800.0, 513.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const top = document.getElementById("top");
const child = document.getElementById("top-child");
const bottom = document.getElementById("bottom");
const fixed = document.getElementById("fixed");
const sample = y => {
window.scrollTo(0, y);
return [
window.scrollY,
top.getBoundingClientRect().top,
child.getBoundingClientRect().top,
bottom.getBoundingClientRect().top,
fixed.getBoundingClientRect().top,
];
};
return [sample(0), sample(100), sample(400), sample(600), sample(9999)];
"#,
)
.unwrap();
let rows = result.as_array().expect("rows");
let number = |row: usize, column: usize| {
rows[row].as_array().unwrap()[column].as_f64().unwrap()
};
let close = |actual: f64, expected: f64| {
assert!(
(actual - expected).abs() < 0.05,
"expected {expected}, got {actual}"
);
};
close(number(0, 1), 60.0);
close(number(0, 3), 448.0);
close(number(1, 1), 20.0);
close(number(1, 2), 20.0);
close(number(1, 3), 448.0);
close(number(2, 1), 20.0);
close(number(2, 3), 231.0);
close(number(3, 1), 20.0);
close(number(3, 3), 31.0);
close(number(4, 0), 1127.0);
close(number(4, 1), -267.0);
close(number(4, 2), -267.0);
close(number(4, 3), -496.0);
for row in 0..rows.len() {
close(number(row, 4), 20.0);
}
}
/// Chromium 150 horizontal reference for the same constraint algorithm:
/// the sticky subtree pins at x=20, remains distinct from fixed, then
/// leaves with its 500px containing block at the right boundary.
#[cfg(feature = "render")]
#[test]
fn root_scroll_sticky_supports_the_inline_axis() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="box-sizing:border-box;margin-left:40px;width:500px;height:100px;padding:10px;border:4px solid">
<div id="sticky" style="box-sizing:border-box;position:sticky;left:20px;width:60px;height:30px;margin:6px">
<div id="child" style="width:10px;height:10px"></div>
</div>
</div>
<div style="width:1600px;height:600px"></div>
<div id="fixed" style="position:fixed;left:20px;top:100px;width:60px;height:30px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(800.0, 513.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const sticky = document.getElementById("sticky");
const child = document.getElementById("child");
const fixed = document.getElementById("fixed");
const sample = x => {
window.scrollTo(x, 0);
return [
window.scrollX,
sticky.getBoundingClientRect().left,
child.getBoundingClientRect().left,
fixed.getBoundingClientRect().left,
];
};
return [sample(0), sample(100), sample(400), sample(800)];
"#,
)
.unwrap();
let rows = result.as_array().unwrap();
let expected = [
[0.0, 60.0, 60.0, 20.0],
[100.0, 20.0, 20.0, 20.0],
[400.0, 20.0, 20.0, 20.0],
[800.0, -340.0, -340.0, 20.0],
];
for (row, expected) in rows.iter().zip(expected) {
for (actual, expected) in row.as_array().unwrap().iter().zip(expected) {
let actual = actual.as_f64().unwrap();
assert!(
(actual - expected).abs() < 0.05,
"expected {expected}, got {actual}"
);
}
}
}
#[cfg(feature = "render")]
#[test]
fn prepared_render_shares_resource_geometry_with_cssom_and_screenshots() {
let dom = parse_html(
r#"<html style="margin:0"><head>
<base href="/assets/">
</head><body style="margin:0">
<div id="frame" style="width:160px">
<img id="hero" src="hero.svg" style="display:block;width:100%;height:auto">
</div>
<div style="height:400px;background:#0000ff"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_url("http://example.test/docs/page");
rt.set_viewport(200.0, 100.0);
let loads = std::sync::Arc::new(std::sync::Mutex::new(0usize));
let loader_loads = std::sync::Arc::clone(&loads);
rt.state.borrow_mut().render_resources =
obscura_render::RenderResourceCache::with_loader(move |url: &str| {
assert_eq!(url, "http://example.test/assets/hero.svg");
*loader_loads.lock().expect("loader count") += 1;
Some(
br##"<svg xmlns="http://www.w3.org/2000/svg" width="400" height="100">
<rect width="400" height="100" fill="#ffff00"/>
</svg>"##
.to_vec(),
)
});
rt.run_page_init();
let before = rt
.evaluate(
r#"
const hero = document.getElementById("hero");
const rect = hero.getBoundingClientRect();
return [rect.width, rect.height, document.documentElement.scrollHeight];
"#,
)
.expect("initial geometry");
let before = before.as_array().expect("initial tuple");
assert_eq!(before[0].as_f64(), Some(160.0));
assert_eq!(before[1].as_f64(), Some(40.0));
let cssom_height = before[2].as_f64().expect("scroll height") as f32;
let (prepared_address, prepared_height) = {
let state = rt.state.borrow();
let prepared = state.prepared_render.as_ref().expect("prepared by CSSOM");
(
prepared as *const obscura_render::PreparedRender as usize,
prepared.content_size().1,
)
};
assert_eq!(cssom_height, prepared_height);
assert_eq!(*loads.lock().expect("prepare load count"), 1);
let base_url = Some("http://example.test/assets/");
let top = rt
.screenshot_prepared((200.0, 100.0), base_url)
.expect("top screenshot");
rt.evaluate(
"(function(){ window.scrollTo(0, document.documentElement.scrollHeight); return window.scrollY; })()",
)
.expect("scroll to bottom");
let bottom = rt
.screenshot_prepared((200.0, 100.0), base_url)
.expect("bottom screenshot");
let bottom_repeat = rt
.screenshot_prepared((200.0, 100.0), base_url)
.expect("repeated bottom screenshot");
assert_ne!(top, bottom);
assert_eq!(bottom, bottom_repeat);
{
let state = rt.state.borrow();
let prepared = state.prepared_render.as_ref().expect("retained prepared render");
assert_eq!(
prepared as *const obscura_render::PreparedRender as usize,
prepared_address,
"screenshots must consume the CSSOM-prepared layout"
);
assert_eq!(prepared.content_size().1, cssom_height);
}
assert_eq!(*loads.lock().expect("paint load count"), 1);
let after = rt
.evaluate(
r#"
const hero = document.getElementById("hero");
document.getElementById("frame").setAttribute("style", "width:80px");
const rect = hero.getBoundingClientRect();
return [rect.width, rect.height, document.documentElement.scrollHeight];
"#,
)
.expect("mutated geometry");
let after = after.as_array().expect("mutated tuple");
assert_eq!(after[0].as_f64(), Some(80.0));
assert_eq!(after[1].as_f64(), Some(20.0));
let mutated_height = after[2].as_f64().expect("mutated scroll height") as f32;
assert_eq!(
rt.state
.borrow()
.prepared_render
.as_ref()
.expect("rebuilt prepared render")
.content_size()
.1,
mutated_height
);
rt.screenshot_prepared((200.0, 100.0), base_url)
.expect("mutated screenshot");
assert_eq!(
*loads.lock().expect("mutation load count"),
1,
"relayout must retain successful resource bytes"
);
}
#[cfg(feature = "render")]
#[test]
fn script_registered_url_font_reaches_render_resource_collection() {
let loads = std::sync::Arc::new(std::sync::Mutex::new(Vec::<String>::new()));
let loader_loads = std::sync::Arc::clone(&loads);
let font = include_bytes!("../../obscura-render/assets/liberation-serif.ttf").to_vec();
let mut rt = parser_image_runtime(
r#"<html><body style="margin:0">
<span id="sample" style="display:inline-block;width:max-content;
font-family:DynamicFixture;font-size:40px;white-space:nowrap">WWWWiiii</span>
</body></html>"#,
move |url: &str| {
loader_loads.lock().expect("font loads").push(url.to_string());
(url == "http://example.com/fonts/dynamic.ttf").then(|| font.clone())
},
);
rt.set_viewport(400.0, 100.0);
let before = rt
.evaluate("document.getElementById('sample').getBoundingClientRect().width")
.unwrap()
.as_f64()
.expect("fallback width");
assert!(loads.lock().expect("initial loads").is_empty());
let registered = rt
.evaluate(
r#"(() => {
const face = new FontFace("DynamicFixture",
"url('../fonts/dynamic.ttf') format('truetype')",
{ weight: "normal", style: "normal", unicodeRange: "U+20-7E" });
return [document.fonts.add(face) === document.fonts,
document.fonts.size, document.fonts.has(face)];
})()"#,
)
.unwrap();
assert_eq!(registered, serde_json::json!([true, 1, true]));
{
let state = rt.state.borrow();
assert_eq!(state.dynamic_fonts.len(), 1);
assert!(
state.prepared_render.is_none(),
"changing the document font registry must invalidate prepared text geometry"
);
}
let after = rt
.evaluate("document.getElementById('sample').getBoundingClientRect().width")
.unwrap()
.as_f64()
.expect("dynamic font width");
assert_ne!(before, after, "registered face must affect final text geometry");
assert_eq!(
*loads.lock().expect("dynamic font loads"),
vec!["http://example.com/fonts/dynamic.ttf".to_string()]
);
rt.screenshot_prepared((400.0, 100.0), Some("http://example.com/page/index.html"))
.expect("dynamic font screenshot");
assert_eq!(loads.lock().expect("repeated font loads").len(), 1);
}
#[cfg(feature = "render")]
#[test]
fn rendered_layout_cache_is_invalidated_by_style_mutations() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="box" style="height:300px;width:40px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const box = document.getElementById("box");
const before = [
document.documentElement.scrollHeight,
box.getBoundingClientRect().height,
];
box.setAttribute("style", "height:900px;width:80px");
const after = [
document.documentElement.scrollHeight,
box.getBoundingClientRect().height,
box.getBoundingClientRect().width,
];
return [before, after];
"#,
)
.unwrap();
let values = result.as_array().expect("result");
let before = values[0].as_array().expect("before");
let after = values[1].as_array().expect("after");
assert!(after[0].as_f64().unwrap() > before[0].as_f64().unwrap());
assert_eq!(before[1].as_f64(), Some(300.0));
assert_eq!(after[1].as_f64(), Some(900.0));
assert_eq!(after[2].as_f64(), Some(80.0));
}
#[cfg(feature = "render")]
#[test]
fn root_overflow_clip_preserves_cssom_scroll_range() {
let dom = parse_html(
r#"<html style="margin:0;height:100%;overflow:hidden">
<body style="margin:0;height:100%">
<main id="main" style="padding-top:48px">
<div style="height:5000px"></div>
</main>
</body>
</html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(900.0, 1000.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const main = document.getElementById("main");
const before = main.getBoundingClientRect();
scrollTo(0, 99999);
const after = main.getBoundingClientRect();
return [
before.height,
document.documentElement.scrollHeight,
document.body.scrollHeight,
scrollY,
after.top,
];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([5048, 5048, 5048, 4048, -4048]));
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn rendered_window_scroll_events_require_actual_movement() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="height:1000px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(320.0, 200.0);
rt.run_page_init();
let moved = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
let win = 0, doc = 0;
window.addEventListener("scroll", () => win++);
document.addEventListener("scroll", () => doc++);
window.scrollTo(0, 100);
setTimeout(() => resolve([win, doc, window.scrollY]), 5);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(moved.value.unwrap(), serde_json::json!([1, 1, 100]));
rt.evaluate("window.scrollTo(0, 99999)").unwrap();
rt.run_event_loop_bounded(20).await.unwrap();
let no_op = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
let win = 0, doc = 0;
window.addEventListener("scroll", () => win++);
document.addEventListener("scroll", () => doc++);
const before = window.scrollY;
window.scrollTo(0, 99999);
setTimeout(() => resolve([win, doc, before, window.scrollY]), 5);
})
"#,
true,
true,
)
.await
.unwrap();
let values = no_op.value.unwrap();
let values = values.as_array().expect("array");
assert_eq!(&values[0..2], &serde_json::json!([0, 0]).as_array().unwrap()[..]);
assert_eq!(values[2], values[3]);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn intersection_observer_tracks_viewport_threshold_crossings() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="height:150px"></div>
<div id="target" style="height:100px"></div>
<div style="height:300px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
let result = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
const records = [];
const target = document.getElementById("target");
const observer = new IntersectionObserver(entries => {
for (const entry of entries) {
records.push([
entry.isIntersecting,
Math.round(entry.intersectionRatio * 100) / 100,
Math.round(entry.boundingClientRect.top),
Math.round(entry.intersectionRect.height),
]);
}
}, { threshold: [0, 0.5, 1] });
observer.observe(target);
setTimeout(() => window.scrollTo(0, 100), 5);
setTimeout(() => window.scrollTo(0, 260), 15);
setTimeout(() => resolve(records), 30);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!([
[false, 0, 150, 0],
[true, 0.5, 50, 50],
[false, 0, -110, 0],
])
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn intersection_observer_honors_root_margin_zero_area_and_no_fake_refires() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0;position:relative">
<div style="height:110px"></div>
<div id="margin-target" style="height:10px"></div>
<div id="zero" style="position:absolute;left:20px;top:50px;width:0;height:0"></div>
<div id="root" style="height:20px;overflow:auto"></div>
<div style="height:300px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
let result = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
const marginRecords = [], zeroRecords = [];
const marginObserver = new IntersectionObserver(
entries => marginRecords.push(...entries.map(entry => [
entry.isIntersecting,
entry.intersectionRatio,
entry.rootBounds.bottom,
])),
{ rootMargin: "0px 0px 20px", threshold: [0, 1] }
);
const zeroObserver = new IntersectionObserver(
entries => zeroRecords.push(...entries.map(entry => [
entry.isIntersecting,
entry.intersectionRatio,
]))
);
marginObserver.observe(document.getElementById("margin-target"));
zeroObserver.observe(document.getElementById("zero"));
let unsupported = "";
try {
new IntersectionObserver(() => {}, {
root: document.getElementById("root")
});
} catch (error) {
unsupported = error.name;
}
setTimeout(() => resolve([
marginRecords, zeroRecords, unsupported,
marginObserver.rootMargin, marginObserver.thresholds,
]), 200);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!([
[[true, 1, 120]],
[[true, 1]],
"NotSupportedError",
"0px 0px 20px 0px",
[0, 1],
])
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn intersection_observer_does_not_refire_while_target_stays_intersecting() {
let dom = parse_html(
r#"<html><body>
<div id="feed"></div>
<div id="sentinel"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(1280.0, 720.0);
rt.run_page_init();
let result = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
const feed = document.getElementById("feed");
let loaded = 0;
const observer = new IntersectionObserver(entries => {
for (const entry of entries) {
if (!entry.isIntersecting) continue;
for (let i = 0; i < 10; i++) {
const card = document.createElement("div");
card.textContent = "Item " + loaded++;
feed.appendChild(card);
}
}
});
observer.observe(document.getElementById("sentinel"));
setTimeout(() => resolve([
loaded,
feed.querySelectorAll("div").length,
]), 200);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!([10, 10]));
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn intersection_observer_can_be_reused_after_disconnect() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="stale" style="height:10px"></div>
<div id="first" style="height:10px"></div>
<div id="second" style="height:10px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
let result = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
const deliveries = [];
const observer = new IntersectionObserver(entries => {
deliveries.push(entries.map(entry => entry.target.id));
if (deliveries.length === 1) {
observer.disconnect();
observer.observe(document.getElementById("second"));
} else {
observer.disconnect();
resolve([
deliveries,
globalThis.__intersectionObservers.length,
]);
}
});
// A pending record from before disconnect must be discarded.
observer.observe(document.getElementById("stale"));
observer.disconnect();
observer.observe(document.getElementById("first"));
setTimeout(() => resolve(["timed out"]), 100);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!([
[["first"], ["second"]],
0,
])
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn intersection_observer_recomputes_after_style_mutation_and_resize() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div id="spacer" style="height:150px"></div>
<div id="target" style="height:20px"></div>
<div style="height:300px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
rt.execute_script(
"intersection-mutation",
r#"
globalThis.__ioRecords = [];
globalThis.__io = new IntersectionObserver(entries => {
__ioRecords.push(...entries.map(entry => [
entry.isIntersecting,
Math.round(entry.boundingClientRect.top),
]));
});
__io.observe(document.getElementById("target"));
"#,
)
.unwrap();
rt.run_event_loop_bounded(10).await.unwrap();
rt.evaluate(
r#"document.getElementById("spacer").setAttribute("style", "height:120px")"#,
)
.unwrap();
rt.run_event_loop_bounded(10).await.unwrap();
assert_eq!(
rt.evaluate("__ioRecords").unwrap(),
serde_json::json!([[false, 150]])
);
rt.set_viewport(200.0, 160.0);
rt.run_event_loop_bounded(20).await.unwrap();
assert_eq!(
rt.evaluate("__ioRecords").unwrap(),
serde_json::json!([[false, 150], [true, 120]])
);
}
#[cfg(feature = "render")]
#[test]
fn scroll_into_view_aligns_the_root_viewport_and_clamps() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="height:300px"></div>
<div id="target" style="height:40px"></div>
<div style="height:340px"></div>
<div id="bottom" style="height:20px"></div>
<div id="fixed" style="position:fixed;top:10px;height:20px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
let result = rt
.evaluate(
r#"
const target = document.getElementById("target");
const bottom = document.getElementById("bottom");
const fixed = document.getElementById("fixed");
target.scrollIntoView();
const start = scrollY;
scrollTo(0, 0);
target.scrollIntoView({ block: "center" });
const center = scrollY;
scrollTo(0, 0);
target.scrollIntoView({ block: "end" });
const end = scrollY;
scrollTo(0, 0);
target.scrollIntoView({ block: "nearest" });
const nearestOutside = scrollY;
scrollTo(0, 250);
target.scrollIntoView({ block: "nearest" });
const nearestVisible = scrollY;
fixed.scrollIntoView();
const afterFixed = scrollY;
bottom.scrollIntoView({ block: "start" });
const clamped = scrollY;
const max = document.documentElement.scrollHeight - innerHeight;
return [
start, center, end, nearestOutside, nearestVisible,
afterFixed, clamped, max,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([300, 270, 240, 240, 250, 250, 600, 600])
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn scroll_into_view_emits_events_only_when_the_root_moves() {
let dom = parse_html(
r#"<html style="margin:0"><body style="margin:0">
<div style="height:300px"></div>
<div id="target" style="height:40px"></div>
<div style="height:300px"></div>
</body></html>"#,
);
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_viewport(200.0, 100.0);
rt.run_page_init();
rt.evaluate("window.scrollTo(0, 250)").unwrap();
rt.run_event_loop_bounded(20).await.unwrap();
let no_op = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
let win = 0, doc = 0;
window.addEventListener("scroll", () => win++);
document.addEventListener("scroll", () => doc++);
document.getElementById("target").scrollIntoView({ block: "nearest" });
setTimeout(() => resolve([win, doc, scrollY]), 5);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(no_op.value.unwrap(), serde_json::json!([0, 0, 250]));
rt.evaluate("window.scrollTo(0, 0)").unwrap();
rt.run_event_loop_bounded(20).await.unwrap();
let moved = rt
.evaluate_for_cdp(
r#"
new Promise(resolve => {
let win = 0, doc = 0;
window.addEventListener("scroll", () => win++);
document.addEventListener("scroll", () => doc++);
document.getElementById("target").scrollIntoView({ block: "center" });
setTimeout(() => resolve([win, doc, scrollY]), 5);
})
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(moved.value.unwrap(), serde_json::json!([1, 1, 270]));
}
/// Issue #469: FILTER_SKIP leaves a skipped node's children eligible, so
/// firstChild()/lastChild() must descend into them. FILTER_REJECT must not.
#[test]
fn tree_walker_child_movers_descend_on_skip_but_not_on_reject() {
let mut rt = setup_runtime(
r#"<div id="root"><section><a></a><b></b></section></div>"#,
);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
function mover(verdict, method) {
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION' ? verdict : NodeFilter.FILTER_ACCEPT;
}
});
const found = w[method]();
return found ? found.tagName : null;
}
return [
mover(NodeFilter.FILTER_SKIP, 'firstChild'),
mover(NodeFilter.FILTER_SKIP, 'lastChild'),
mover(NodeFilter.FILTER_REJECT, 'firstChild'),
mover(NodeFilter.FILTER_REJECT, 'lastChild'),
];
"#,
)
.unwrap();
// SKIP descends into <section>; REJECT prunes it and finds nothing else.
assert_eq!(result, serde_json::json!(["A", "B", null, null]));
}
/// Issue #469: nextSibling()/previousSibling() must descend into a skipped
/// sibling's subtree rather than stepping straight over it.
#[test]
fn tree_walker_sibling_movers_descend_into_skipped_siblings() {
let mut rt = setup_runtime(
r#"<div id="root"><p id="start"></p><section><a></a></section><q></q></div>"#,
);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
function mover(verdict, method, from) {
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION' ? verdict : NodeFilter.FILTER_ACCEPT;
}
});
w.currentNode = document.getElementById(from);
const found = w[method]();
return found ? found.tagName : null;
}
return [
// <section> is skipped, so its child <a> is the next sibling.
mover(NodeFilter.FILTER_SKIP, 'nextSibling', 'start'),
// Rejected: the subtree is off-limits, so skip past to <q>.
mover(NodeFilter.FILTER_REJECT, 'nextSibling', 'start'),
];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["A", "Q"]));
}
/// Issue #469: the backward sibling mover descends to *last* children.
#[test]
fn tree_walker_previous_sibling_descends_to_last_child() {
let mut rt = setup_runtime(
r#"<div id="root"><section><a></a><b></b></section><p id="start"></p></div>"#,
);
let result = rt
.evaluate(
r#"
const root = document.getElementById('root');
const w = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT, {
acceptNode(node) {
return node.tagName === 'SECTION'
? NodeFilter.FILTER_SKIP
: NodeFilter.FILTER_ACCEPT;
}
});
w.currentNode = document.getElementById('start');
const found = w.previousSibling();
return found ? found.tagName : null;
"#,
)
.unwrap();
// Reverse order descends to <section>'s last child, not its first.
assert_eq!(result, serde_json::json!("B"));
}
#[test]
fn append_child_flattens_document_fragment() {
let mut rt = setup_runtime(r#"<main id="host"></main>"#);
let result = rt
.evaluate(
r#"
const host = document.getElementById('host');
const fragment = document.createDocumentFragment();
const first = document.createElement('article');
const second = document.createElement('article');
first.id = 'first';
second.id = 'second';
first.className = second.className = 'quote';
fragment.appendChild(first);
fragment.appendChild(second);
const returned = host.appendChild(fragment);
return [
returned === fragment,
Array.from(host.children).map(node => node.id),
host.querySelectorAll('.quote').length,
fragment.childNodes.length,
first.parentNode === host,
first.parentElement === host,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([true, ["first", "second"], 2, 0, true, true])
);
}
#[test]
fn insert_before_flattens_document_fragment_in_order() {
let mut rt = setup_runtime(r#"<main id="host"><article id="last"></article></main>"#);
let result = rt
.evaluate(
r#"
const host = document.getElementById('host');
const last = document.getElementById('last');
const fragment = document.createDocumentFragment();
const first = document.createElement('article');
const second = document.createElement('article');
first.id = 'first';
second.id = 'second';
fragment.appendChild(first);
fragment.appendChild(second);
const returned = host.insertBefore(fragment, last);
return [
returned === fragment,
Array.from(host.children).map(node => node.id),
fragment.childNodes.length,
first.parentElement === host,
second.parentElement === host,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([true, ["first", "second", "last"], 0, true, true])
);
}
#[test]
fn replace_child_flattens_document_fragment_and_removes_old_child() {
let mut rt = setup_runtime(
r#"<main id="host"><article id="old"></article><article id="tail"></article></main>"#,
);
let result = rt
.evaluate(
r#"
const host = document.getElementById('host');
const old = document.getElementById('old');
const fragment = document.createDocumentFragment();
const first = document.createElement('article');
const second = document.createElement('article');
first.id = 'first';
second.id = 'second';
fragment.appendChild(first);
fragment.appendChild(second);
const returned = host.replaceChild(fragment, old);
return [
returned === old,
Array.from(host.children).map(node => node.id),
fragment.childNodes.length,
old.parentNode === null,
first.parentElement === host,
second.parentElement === host,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([true, ["first", "second", "tail"], 0, true, true, true])
);
}
#[test]
fn test_inner_html() {
let mut rt = setup_runtime(r#"<div id="x"><p>Hello</p></div>"#);
let html = rt.evaluate("document.getElementById('x').innerHTML").unwrap();
assert!(html.as_str().unwrap().contains("<p>"));
}
#[test]
fn template_inner_html_preserves_table_fragments() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"
const template = document.createElement('template');
template.innerHTML = '<tr><td>first</td><td>second</td></tr>';
const clone = template.content.firstChild.cloneNode(true);
return [
clone.tagName,
clone.firstElementChild.tagName,
clone.firstElementChild.children.length,
clone.textContent,
];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["TR", "TD", 0, "firstsecond"]));
}
#[test]
fn document_exposes_parent_node_element_children_api() {
let mut rt = setup_runtime("<html><head></head><body></body></html>");
let result = rt
.evaluate(
"return [document.firstElementChild === document.documentElement,\
document.lastElementChild === document.documentElement,\
document.children.length, document.childElementCount];",
)
.unwrap();
assert_eq!(result, serde_json::json!([true, true, 1, 1]));
}
#[test]
fn atob_decodes_large_payload_without_argument_stack_overflow() {
let mut rt = setup_runtime("<html><body></body></html>");
// 60k four-character groups decode to 180k bytes, comfortably above
// V8's maximum argument count for a single fromCharCode(...bytes).
let encoded = "QUFB".repeat(60_000);
let result = rt
.evaluate(&format!("atob('{}').length", encoded))
.unwrap();
assert_eq!(result.as_f64().unwrap() as usize, 180_000);
}
#[test]
fn navigation_api_updates_current_entry_state() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"
(() => {
navigation.updateCurrentEntry({state: {route: 'home'}});
const first = navigation.currentEntry;
navigation.navigate('/docs', {state: {route: 'docs'}});
return [
typeof navigation.updateCurrentEntry,
first.getState().route,
navigation.currentEntry.getState().route,
navigation.currentEntry.url,
];
})()
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
"function",
"home",
"docs",
"http://example.com/docs"
])
);
}
#[test]
fn adopted_stylesheets_materialize_into_the_document() {
let mut rt = setup_runtime("<html><head></head><body><div class=\"card\"></div></body></html>");
let result = rt
.evaluate(
r#"
(() => {
const sheet = new CSSStyleSheet();
document.adoptedStyleSheets.push(sheet);
sheet.insertRule('.card { display: flex; color: red; }', 0);
const node = document.querySelector('style[data-obscura-adopted]');
const inserted = node.textContent;
sheet.deleteRule(0);
return [
document.adoptedStyleSheets.length,
document.querySelectorAll('style[data-obscura-adopted]').length,
inserted.includes('display: flex'),
node.textContent,
];
})()
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([1, 1, true, ""]));
}
#[test]
fn unavailable_webgl_context_does_not_claim_success() {
let mut rt = setup_runtime("<html><body><canvas></canvas></body></html>");
let result = rt
.evaluate(
r#"
(() => {
const canvas = document.querySelector('canvas');
const fallback = document.createElement('p');
if (!canvas.getContext('webgl')) {
fallback.textContent = 'static fallback';
document.body.appendChild(fallback);
}
return [
canvas.getContext('webgl'),
canvas.getContext('webgl2'),
canvas.getContext('experimental-webgl'),
fallback.isConnected,
fallback.textContent,
];
})()
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([null, null, null, true, "static fallback"])
);
}
#[test]
fn test_script_execution() {
let mut rt = setup_runtime("<ul><li>A</li><li>B</li></ul>");
rt.execute_script(
"test",
r#"
globalThis.__result = [];
document.querySelectorAll('li').forEach(function(el) {
globalThis.__result.push(el.textContent);
});
"#,
)
.unwrap();
let result = rt.evaluate("globalThis.__result").unwrap();
assert_eq!(result, serde_json::json!(["A", "B"]));
}
#[test]
fn page_var_declarations_do_not_collide_with_dom_interfaces() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"legacy-node-guard",
"if (!window.Node) { var Node = {}; } globalThis.__legacyNodeRan = true;",
)
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__legacyNodeRan").unwrap(),
serde_json::json!(true)
);
rt.execute_script(
"page-element",
"var Element = function PageElement() {}; globalThis.__createdTag = document.createElement('div').tagName;",
)
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__createdTag").unwrap(),
serde_json::json!("DIV")
);
}
#[test]
fn dynamic_script_status_bridge_is_hidden_and_idle() {
let mut rt = setup_runtime("<html><body></body></html>");
assert!(!rt.has_pending_dynamic_scripts());
assert_eq!(
rt.evaluate("typeof __dynScriptBusy").unwrap(),
serde_json::json!("undefined")
);
assert_eq!(
rt.evaluate(
"Object.getOwnPropertyNames(globalThis).includes('__obscura_hasPendingDynamicScripts')"
)
.unwrap(),
serde_json::json!(false)
);
assert_eq!(
rt.evaluate(
"Reflect.ownKeys(globalThis).includes('__obscura_hasPendingDynamicScripts')"
)
.unwrap(),
serde_json::json!(false)
);
}
/// Regression test for #147: a TypeError in one script must not poison
/// the runtime so that subsequent scripts (or DOM queries) collapse to
/// empty. The reporter saw `--dump text` return 1 byte after offside.js
/// crashed; that cascade should never happen.
#[test]
fn script_typeerror_does_not_poison_subsequent_execution() {
let mut rt = setup_runtime(
"<html><body><p id=hit>BODY_TEXT</p></body></html>",
);
// 1. First script throws the same flavor of error offside.js produced
// (`Cannot read properties of undefined (reading 'classList')`).
let err = rt
.execute_script("buggy", "var x; x.classList.add('y');")
.unwrap_err();
assert!(err.contains("classList") || err.contains("undefined"),
"expected classList/undefined error, got: {}", err);
// 2. The runtime must still be usable: a follow-up script runs.
rt.execute_script("ok", "globalThis.__after_error = 'still alive';")
.unwrap();
let result = rt.evaluate("globalThis.__after_error").unwrap();
assert_eq!(result, serde_json::json!("still alive"));
// 3. DOM queries still work after the script error.
let text = rt
.evaluate("document.querySelector('#hit').textContent")
.unwrap();
assert_eq!(text, serde_json::json!("BODY_TEXT"));
}
/// Regression test for #355: an explicit `throw` in one inline <script> must
/// not stop later independent <script>s from running. Each <script> executes
/// as its own `execute_script` call, mirroring how page.rs runs them, so a
/// thrown error is reported but the next script still runs.
#[test]
fn thrown_error_in_one_script_does_not_stop_later_scripts() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script("s1", "globalThis.__ran1 = true;").unwrap();
let err = rt
.execute_script("s2", "throw new Error('only one instance of babel-polyfill is allowed');")
.unwrap_err();
assert!(err.contains("babel-polyfill"), "expected the thrown message, got: {}", err);
rt.execute_script("s3", "globalThis.__ran3 = true;").unwrap();
let ran = rt
.evaluate("JSON.stringify([globalThis.__ran1 === true, globalThis.__ran3 === true])")
.unwrap();
assert_eq!(ran, serde_json::json!("[true,true]"));
}
/// Regression test for #356: the `in` operator and `Object.keys` must work on
/// `el.style` (CSSStyleDeclaration) and `el.dataset` (DOMStringMap), `_props`
/// must not leak, and cssText must serialize dashed names with a trailing
/// semicolon.
#[test]
fn style_and_dataset_support_in_operator_and_keys() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"(() => {
const el = document.createElement('div');
el.style.color = 'red';
el.style.fontSize = '14px';
el.dataset.foo = 'bar';
const keys = Object.keys(el.style);
return JSON.stringify({
colorInStyle: 'color' in el.style,
objectFitInStyle: 'object-fit' in el.style,
keysHasSet: keys.includes('color') && keys.includes('fontSize'),
noPropsLeak: !keys.includes('_props'),
fooInDataset: 'foo' in el.dataset,
datasetKeys: Object.keys(el.dataset),
cssText: el.style.cssText,
length: el.style.length,
getByDash: el.style.getPropertyValue('font-size'),
reflectedAttribute: el.getAttribute('style')
});
})()"#,
)
.unwrap();
let p: serde_json::Value = serde_json::from_str(result.as_str().unwrap()).unwrap();
assert_eq!(p["colorInStyle"], true);
assert_eq!(p["objectFitInStyle"], true);
assert_eq!(p["keysHasSet"], true);
assert_eq!(p["noPropsLeak"], true);
assert_eq!(p["fooInDataset"], true);
assert_eq!(p["datasetKeys"], serde_json::json!(["foo"]));
assert_eq!(p["cssText"], "color: red; font-size: 14px;");
assert_eq!(p["length"], 2);
assert_eq!(p["getByDash"], "14px");
assert_eq!(p["reflectedAttribute"], "color: red; font-size: 14px;");
}
#[test]
fn style_declaration_reflects_and_removes_parsed_attributes() {
let mut rt = setup_runtime(
"<html><body><div id='icon' style='font-size: 0px; color: red'></div></body></html>",
);
let result = rt
.evaluate(
r#"(() => {
const el = document.getElementById('icon');
const before = [el.style.fontSize, el.style.color, el.style.length];
const removed = el.style.removeProperty('font-size');
return JSON.stringify({
before,
removed,
after: el.style.cssText,
attribute: el.getAttribute('style')
});
})()"#,
)
.unwrap();
let value: serde_json::Value =
serde_json::from_str(result.as_str().unwrap()).unwrap();
assert_eq!(value["before"], serde_json::json!(["0px", "red", 2]));
assert_eq!(value["removed"], "0px");
assert_eq!(value["after"], "color: red;");
assert_eq!(value["attribute"], "color: red;");
}
#[test]
fn select_add_and_option_text_update_the_live_dom() {
let mut rt = setup_runtime("<html><body><select id='language'></select></body></html>");
let result = rt
.evaluate(
r#"(() => {
const select = document.getElementById('language');
const english = document.createElement('option');
english.value = 'en';
english.text = 'English';
english.selected = true;
select.add(english);
const greek = document.createElement('option');
greek.value = 'el';
greek.text = 'Greek';
select.add(greek, 0);
return JSON.stringify({
labels: [...select.options].map(option => option.textContent),
selectedIndex: select.selectedIndex,
value: select.value,
html: select.outerHTML
});
})()"#,
)
.unwrap();
let value: serde_json::Value =
serde_json::from_str(result.as_str().unwrap()).unwrap();
assert_eq!(value["labels"], serde_json::json!(["Greek", "English"]));
assert_eq!(value["selectedIndex"], 1);
assert_eq!(value["value"], "en");
assert!(
value["html"]
.as_str()
.unwrap()
.contains(r#"<option value="en" selected="">English</option>"#)
);
}
/// Regression for #105: `element.querySelector` and `querySelectorAll`
/// must scope to the receiver's subtree, not the whole document.
#[test]
fn element_query_selector_is_scoped_to_subtree() {
let mut rt = setup_runtime(
r#"<div id="a"><span class="x">in a</span></div><div id="b"><span class="x">in b</span></div>"#,
);
let text = rt
.evaluate("document.getElementById('a').querySelector('.x').textContent")
.unwrap();
assert_eq!(text, serde_json::json!("in a"));
let count_in_a = rt
.evaluate("document.getElementById('a').querySelectorAll('.x').length")
.unwrap();
assert_eq!(count_in_a.as_f64().unwrap() as i64, 1);
// Document-scoped query still sees both.
let count_doc = rt.evaluate("document.querySelectorAll('.x').length").unwrap();
assert_eq!(count_doc.as_f64().unwrap() as i64, 2);
}
#[test]
fn document_evaluate_exposes_basic_xpath_result() {
let mut rt = setup_runtime("");
let exposed = rt
.evaluate("`${typeof XPathResult}:${typeof Document.prototype.evaluate}:${XPathResult.FIRST_ORDERED_NODE_TYPE}`")
.unwrap();
assert_eq!(exposed, serde_json::json!("function:function:9"));
}
/// Regression for #105: `document.forms` / `images` / `links` must be
/// live, not hardcoded `[]`. jQuery 1.x's submit-event setup iterates
/// `document.forms` and crashes when it's empty for pages that have forms.
#[test]
fn document_forms_images_links_are_live() {
let mut rt = setup_runtime(
r#"<form></form><form></form><img><a href="x">l</a><a>no-href</a>"#,
);
assert_eq!(rt.evaluate("document.forms.length").unwrap().as_f64().unwrap() as i64, 2);
assert_eq!(rt.evaluate("document.images.length").unwrap().as_f64().unwrap() as i64, 1);
assert_eq!(rt.evaluate("document.links.length").unwrap().as_f64().unwrap() as i64, 1);
}
#[cfg(feature = "render")]
fn parser_image_runtime(
html: &str,
loader: impl obscura_render::RenderResourceLoader + 'static,
) -> ObscuraJsRuntime {
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(parse_html(html));
rt.set_url("http://example.com/page/index.html");
rt.state.borrow_mut().render_resources =
obscura_render::RenderResourceCache::with_loader(loader);
rt.run_page_init();
rt
}
#[cfg(feature = "render")]
fn two_by_three_png() -> Vec<u8> {
use base64::Engine as _;
base64::engine::general_purpose::STANDARD
.decode(
"iVBORw0KGgoAAAANSUhEUgAAAAIAAAADCAYAAAC56t6B\
AAAAFklEQVR4nGP8z8Dwn4GBgYGJAQrgDAAxOwIE7x6DkQAAAABJRU5ErkJggg=="
.replace(char::is_whitespace, ""),
)
.unwrap()
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn parser_image_lifecycle_uses_shared_render_resource() {
let calls = std::sync::Arc::new(std::sync::atomic::AtomicUsize::new(0));
let loader_calls = calls.clone();
let png = two_by_three_png();
let mut rt = parser_image_runtime(
r#"<img id="hero" src="../assets/hero.png">"#,
move |_url: &str| {
loader_calls.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
Some(png.clone())
},
);
rt.execute_script(
"observe-parser-image",
r#"
globalThis.__imageEvents = [];
globalThis.__decodeState = "pending";
const image = document.getElementById("hero");
globalThis.__imageInitial = [
image instanceof HTMLImageElement,
image.complete,
image.naturalWidth,
image.naturalHeight
];
image.addEventListener("load", () => __imageEvents.push("load"));
image.addEventListener("error", () => __imageEvents.push("error"));
image.decode().then(
() => { __decodeState = "resolved"; },
error => { __decodeState = error.name; }
);
"#,
)
.unwrap();
assert_eq!(
rt.evaluate("__imageInitial").unwrap(),
serde_json::json!([true, false, 0, 0])
);
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate(
r#"[
image.complete,
image.naturalWidth,
image.naturalHeight,
image.currentSrc,
__imageEvents,
__decodeState
]"#,
)
.unwrap(),
serde_json::json!([
true,
2,
3,
"http://example.com/assets/hero.png",
["load"],
"resolved"
])
);
assert_eq!(calls.load(std::sync::atomic::Ordering::SeqCst), 1);
// A subsequent request for the same URL is served by the retained
// renderer bytes rather than calling the loader again.
rt.execute_script("reload-image", r#"image.src = "../assets/hero.png";"#)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(calls.load(std::sync::atomic::Ordering::SeqCst), 1);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn parser_image_failure_completes_and_rejects_decode() {
let calls = std::sync::Arc::new(std::sync::atomic::AtomicUsize::new(0));
let loader_calls = calls.clone();
let mut rt = parser_image_runtime(
r#"<img id="broken" src="missing.png">"#,
move |_url: &str| {
loader_calls.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
None
},
);
rt.execute_script(
"observe-broken-image",
r#"
globalThis.__brokenEvents = [];
globalThis.__brokenDecode = "pending";
const broken = document.getElementById("broken");
broken.onload = () => __brokenEvents.push("load");
broken.onerror = () => __brokenEvents.push("error");
broken.decode().then(
() => { __brokenDecode = "resolved"; },
error => { __brokenDecode = error.name; }
);
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate(
"[broken.complete, broken.naturalWidth, broken.naturalHeight, \
__brokenEvents, __brokenDecode]"
)
.unwrap(),
serde_json::json!([true, 0, 0, ["error"], "EncodingError"])
);
assert_eq!(calls.load(std::sync::atomic::Ordering::SeqCst), 1);
}
#[cfg(feature = "render")]
#[test]
fn parser_image_first_getter_observes_prepare_seeded_cache_synchronously() {
let calls = std::sync::Arc::new(std::sync::atomic::AtomicUsize::new(0));
let loader_calls = calls.clone();
let png = two_by_three_png();
let mut rt = parser_image_runtime(
r#"<img id="cached" src="cached.png">"#,
move |_url: &str| {
loader_calls.fetch_add(1, std::sync::atomic::Ordering::SeqCst);
Some(png.clone())
},
);
{
let mut state = rt.state.borrow_mut();
assert!(ensure_prepared_render(&mut state).is_some());
}
assert_eq!(calls.load(std::sync::atomic::Ordering::SeqCst), 1);
// Constructing the JS wrapper happens here, after prepare_dom loaded
// the resource. The first complete getter must see that cache hit
// immediately; it must not briefly regress to pending/zero.
assert_eq!(
rt.evaluate(
r#"(() => {
const cached = document.getElementById("cached");
return [
cached.complete,
cached.naturalWidth,
cached.naturalHeight,
cached.currentSrc
];
})()"#,
)
.unwrap(),
serde_json::json!([
true,
2,
3,
"http://example.com/page/cached.png"
])
);
assert_eq!(calls.load(std::sync::atomic::Ordering::SeqCst), 1);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn parser_image_source_replacement_cancels_queued_completion() {
let requests = std::sync::Arc::new(std::sync::Mutex::new(Vec::new()));
let seen = requests.clone();
let first = two_by_three_png();
use base64::Engine as _;
let second = base64::engine::general_purpose::STANDARD
.decode(
"iVBORw0KGgoAAAANSUhEUgAAAAQAAAAFCAYAAABirU3b\
AAAAFUlEQVR4nGNk+M/wnwEJMDGgATIEAKVaAgg/Jbt7AAAAAElFTkSuQmCC"
.replace(char::is_whitespace, ""),
)
.unwrap();
let mut rt = parser_image_runtime(
r#"<img id="swap" src="old.png">"#,
move |url: &str| {
seen.lock().unwrap().push(url.to_string());
if url.ends_with("/new.png") {
Some(second.clone())
} else {
Some(first.clone())
}
},
);
rt.execute_script(
"replace-image-source",
r#"
globalThis.__swapEvents = [];
const swap = document.getElementById("swap");
swap.addEventListener("load", () => __swapEvents.push(swap.currentSrc));
swap.src = "new.png";
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate(
"[swap.complete, swap.naturalWidth, swap.naturalHeight, \
swap.currentSrc, __swapEvents]"
)
.unwrap(),
serde_json::json!([
true,
4,
5,
"http://example.com/page/new.png",
["http://example.com/page/new.png"]
])
);
assert_eq!(
*requests.lock().unwrap(),
vec!["http://example.com/page/new.png".to_string()]
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn responsive_picture_lifecycle_tracks_viewport_density_and_source_media() {
let requests = std::sync::Arc::new(std::sync::Mutex::new(Vec::new()));
let seen = requests.clone();
let png = two_by_three_png();
let mut rt = parser_image_runtime(
r#"
<picture>
<source type="image/avif" srcset="unsupported.avif">
<source id="wide-source" media="(min-width: 800px)"
srcset="wide.png 2x">
<source media="(max-width: 799px)" srcset="narrow.png">
<img id="responsive-picture" src="fallback.png">
</picture>
"#,
move |url: &str| {
seen.lock().unwrap().push(url.to_string());
Some(png.clone())
},
);
rt.set_viewport(1000.0, 600.0);
rt.execute_script(
"observe-responsive-picture",
r#"
globalThis.__pictureLoads = [];
const pictureImage = document.getElementById("responsive-picture");
pictureImage.addEventListener("load", () => {
__pictureLoads.push(pictureImage.currentSrc);
});
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate(
"[pictureImage.currentSrc, pictureImage.naturalWidth, \
pictureImage.naturalHeight, __pictureLoads]"
)
.unwrap(),
serde_json::json!([
"http://example.com/page/wide.png",
1,
2,
["http://example.com/page/wide.png"]
])
);
// A live viewport change re-runs the renderer's media/source
// selection. The cache-only complete getter must report pending but
// must not perform the load itself.
rt.set_viewport(600.0, 600.0);
assert_eq!(rt.evaluate("pictureImage.complete").unwrap(), serde_json::json!(false));
assert_eq!(requests.lock().unwrap().len(), 1);
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate(
"[pictureImage.currentSrc, pictureImage.naturalWidth, \
pictureImage.naturalHeight, __pictureLoads]"
)
.unwrap(),
serde_json::json!([
"http://example.com/page/narrow.png",
2,
3,
[
"http://example.com/page/wide.png",
"http://example.com/page/narrow.png"
]
])
);
// Mutating a <source> selection input invalidates its associated img.
// The wide bytes are already shared in the render cache, but lifecycle
// completion remains task-queued and emits one new load event.
rt.execute_script(
"mutate-picture-source",
r#"
document.getElementById("wide-source").setAttribute("media", "all");
globalThis.__pictureCompleteAfterSourceMutation = pictureImage.complete;
"#,
)
.unwrap();
assert_eq!(
rt.evaluate("__pictureCompleteAfterSourceMutation").unwrap(),
serde_json::json!(false)
);
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("[pictureImage.currentSrc, __pictureLoads]").unwrap(),
serde_json::json!([
"http://example.com/page/wide.png",
[
"http://example.com/page/wide.png",
"http://example.com/page/narrow.png",
"http://example.com/page/wide.png"
]
])
);
assert_eq!(
*requests.lock().unwrap(),
vec![
"http://example.com/page/wide.png".to_string(),
"http://example.com/page/narrow.png".to_string(),
]
);
}
#[cfg(feature = "render")]
#[tokio::test(flavor = "current_thread")]
async fn responsive_srcset_sizes_uses_renderer_selected_current_src() {
let requests = std::sync::Arc::new(std::sync::Mutex::new(Vec::new()));
let seen = requests.clone();
let png = two_by_three_png();
let mut rt = parser_image_runtime(
r#"<img id="responsive-srcset" src="fallback.png"
srcset="small.png 400w, large.png 800w" sizes="400px">"#,
move |url: &str| {
seen.lock().unwrap().push(url.to_string());
Some(png.clone())
},
);
rt.execute_script(
"observe-responsive-srcset",
r#"
globalThis.__srcsetLoads = [];
const srcsetImage = document.getElementById("responsive-srcset");
srcsetImage.addEventListener("load", () => {
__srcsetLoads.push(srcsetImage.currentSrc);
});
"#,
)
.unwrap();
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("[srcsetImage.currentSrc, __srcsetLoads]").unwrap(),
serde_json::json!([
"http://example.com/page/small.png",
["http://example.com/page/small.png"]
])
);
change_srcset_image_sizes(&mut rt);
assert_eq!(rt.evaluate("srcsetImage.complete").unwrap(), serde_json::json!(false));
rt.run_event_loop_bounded(100).await.unwrap();
assert_eq!(
rt.evaluate("[srcsetImage.currentSrc, __srcsetLoads]").unwrap(),
serde_json::json!([
"http://example.com/page/large.png",
[
"http://example.com/page/small.png",
"http://example.com/page/large.png"
]
])
);
assert_eq!(
*requests.lock().unwrap(),
vec![
"http://example.com/page/small.png".to_string(),
"http://example.com/page/large.png".to_string(),
]
);
}
#[cfg(feature = "render")]
fn change_srcset_image_sizes(rt: &mut ObscuraJsRuntime) {
rt.execute_script("change-responsive-sizes", r#"srcsetImage.sizes = "800px";"#)
.unwrap();
}
/// Regression for #105: `HTMLFormElement` must expose `.elements` so
/// frameworks that probe form field collections work.
#[test]
fn html_form_element_exposes_elements_collection() {
let mut rt = setup_runtime(
r#"<form id="f"><input name=a><input name=b><textarea></textarea></form>"#,
);
let n = rt
.evaluate("document.getElementById('f').elements.length")
.unwrap();
assert_eq!(n.as_f64().unwrap() as i64, 3);
let is_form = rt
.evaluate("document.getElementById('f') instanceof HTMLFormElement")
.unwrap();
assert_eq!(is_form, serde_json::json!(true));
}
/// Regression for #105: `Element.prepend` must actually insert at the
/// start, not silently no-op.
#[test]
fn element_prepend_inserts_at_start() {
let mut rt = setup_runtime(r#"<div id="c"><span>existing</span></div>"#);
rt.evaluate(
r#"
const c = document.getElementById('c');
const n = document.createElement('span');
n.id = 'first';
c.prepend(n);
"#,
)
.unwrap();
let first_id = rt.evaluate("document.getElementById('c').firstChild.id").unwrap();
assert_eq!(first_id, serde_json::json!("first"));
let count = rt.evaluate("document.getElementById('c').childNodes.length").unwrap();
assert_eq!(count.as_f64().unwrap() as i64, 2);
}
/// Regression for #105: `isEqualNode` compares structure, not identity.
/// Framework diff algorithms rely on this.
#[test]
fn is_equal_node_does_structural_compare() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"
const a = document.createElement('div'); a.setAttribute('class', 'x'); a.innerHTML = '<span>hi</span>';
const b = document.createElement('div'); b.setAttribute('class', 'x'); b.innerHTML = '<span>hi</span>';
const c = document.createElement('div'); c.innerHTML = '<span>bye</span>';
return [a.isEqualNode(b), a.isEqualNode(c), a.isSameNode(b)];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([true, false, false]));
}
/// Regression for the long-standing insert_before arg-order bug noted
/// in CLAUDE.md: bootstrap.js was passing (parent, new, ref) but `_dom`
/// forwards only two args, silently dropping `ref`. With the fix,
/// `insertBefore` actually inserts.
#[test]
fn insert_before_inserts_node_at_correct_position() {
let mut rt = setup_runtime(r#"<div id="p"><span id="b">b</span><span id="c">c</span></div>"#);
let order = rt
.evaluate(
r#"
const p = document.getElementById('p');
const a = document.createElement('span');
a.id = 'a';
p.insertBefore(a, document.getElementById('b'));
return Array.from(p.children).map(e => e.id).join(',');
"#,
)
.unwrap();
assert_eq!(order, serde_json::json!("a,b,c"));
}
#[test]
fn test_console_log() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script("test", "console.log('Hello from V8!')").unwrap();
}
#[test]
fn test_location() {
let mut rt = setup_runtime("<html><body></body></html>");
let href = rt.evaluate("location.href").unwrap();
assert_eq!(href, serde_json::json!("http://example.com/test"));
}
#[test]
fn test_button_click_dispatches_listener() {
let mut rt = setup_runtime(r#"<button id="go">Go</button>"#);
let result = rt.evaluate(r#"
const button = document.getElementById('go');
button.addEventListener('click', () => { button.dataset.clicked = 'yes'; });
button.click();
return button.dataset.clicked;
"#).unwrap();
assert_eq!(result, serde_json::json!("yes"));
}
#[test]
fn test_dispatch_mouse_event_runs_listener() {
let mut rt = setup_runtime(r#"<button id="go">Go</button>"#);
let result = rt.evaluate(r#"
const button = document.getElementById('go');
let count = 0;
button.addEventListener('click', () => { count += 1; });
button.dispatchEvent(new MouseEvent('click', { bubbles: true }));
return count;
"#).unwrap();
assert_eq!(result.as_f64().unwrap() as i64, 1);
}
#[test]
fn test_location_href_assignment_updates_navigation_state() {
let mut rt = setup_runtime("<html><body></body></html>");
let href = rt.evaluate("const next = '/next'; location.href = next; return location.href;").unwrap();
assert_eq!(href, serde_json::json!("http://example.com/next"));
assert_eq!(
rt.take_pending_navigation(),
Some(("http://example.com/next".to_string(), "GET".to_string(), "".to_string()))
);
}
#[test]
fn test_submit_button_click_handler_can_prevent_default_and_navigate() {
let mut rt = setup_runtime(r#"<form><button type="submit" id="submit">Submit</button></form>"#);
let href = rt.evaluate(r#"
const form = document.querySelector('form');
form.addEventListener('submit', (event) => {
event.preventDefault();
location.href = '/submitted';
});
document.getElementById('submit').click();
return location.href;
"#).unwrap();
assert_eq!(href, serde_json::json!("http://example.com/submitted"));
assert_eq!(
rt.take_pending_navigation(),
Some(("http://example.com/submitted".to_string(), "GET".to_string(), "".to_string()))
);
}
#[test]
fn test_navigator() {
let mut rt = setup_runtime("<html><body></body></html>");
let ua = rt.evaluate("navigator.userAgent").unwrap();
assert!(ua.as_str().unwrap().contains("Chrome"), "UA should contain Chrome: {}", ua);
let wd = rt.evaluate("navigator.webdriver").unwrap();
assert_eq!(wd, serde_json::json!(false));
let plugins = rt.evaluate("navigator.plugins.length").unwrap();
assert!(plugins.as_f64().unwrap() > 0.0, "Should have plugins");
let chrome = rt.evaluate("typeof window.chrome").unwrap();
assert_eq!(chrome, serde_json::json!("object"));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_no_args() {
let mut rt = setup_runtime("<html><head><title>Test</title></head><body></body></html>");
let result = rt
.call_function_on("() => document.title", None, &[], true)
.await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!("Test Page"));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_with_args() {
let mut rt = setup_runtime("<html><body></body></html>");
let args = vec![
serde_json::json!({"value": 10}),
serde_json::json!({"value": 20}),
];
let result = rt.call_function_on("(a, b) => a + b", None, &args, true).await.unwrap();
assert_eq!(result.value.unwrap().as_f64().unwrap() as i64, 30);
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_with_string_args() {
let mut rt = setup_runtime("<html><body></body></html>");
let args = vec![
serde_json::json!({"value": "hello"}),
serde_json::json!({"value": " world"}),
];
let result = rt.call_function_on("(a, b) => a + b", None, &args, true).await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!("hello world"));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_with_object_args() {
let mut rt = setup_runtime("<html><body></body></html>");
let args = vec![serde_json::json!({"value": {"name": "test", "count": 5}})];
let result = rt
.call_function_on("(obj) => obj.name + ':' + obj.count", None, &args, true)
.await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!("test:5"));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_return_object() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.call_function_on("() => ({a: 1, b: 2})", None, &[], true)
.await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!({"a": 1, "b": 2}));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_object_ref_preserves_methods() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.call_function_on(
"() => ({ items: [1,2,3], getLen: function() { return this.items.length; } })",
None,
&[],
false,
)
.await.unwrap();
let oid = result.object_id.unwrap();
let result2 = rt
.call_function_on("function() { return this.getLen(); }", Some(&oid), &[], true)
.await.unwrap();
assert_eq!(result2.value.unwrap().as_f64().unwrap() as i64, 3);
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_detects_node() {
let mut rt = setup_runtime("<html><body><h1>Hello</h1></body></html>");
let result = rt
.evaluate_for_cdp("document.querySelector('h1')", false, false)
.await.unwrap();
assert_eq!(result.subtype.as_deref(), Some("node"));
assert_eq!(result.js_type, "object");
assert!(result.object_id.is_some());
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_detects_document() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate_for_cdp("document", false, false).await.unwrap();
assert_eq!(result.subtype.as_deref(), Some("node"));
assert_eq!(result.class_name, "HTMLDocument");
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_awaits_resolved_promise() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate_for_cdp("Promise.resolve(42)", true, true).await.unwrap();
assert_eq!(result.value.unwrap().as_f64().unwrap() as i64, 42);
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_awaits_timer_promise() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate_for_cdp("new Promise(resolve => setTimeout(() => resolve('done'), 1))", true, true).await.unwrap();
assert_eq!(result.value.unwrap().as_str().unwrap(), "done");
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_awaits_async_function() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate_for_cdp("(async () => 'async-ok')()", true, true).await.unwrap();
assert_eq!(result.value.unwrap().as_str().unwrap(), "async-ok");
}
#[tokio::test(flavor = "current_thread")]
async fn test_evaluate_for_cdp_reports_promise_rejection() {
let mut rt = setup_runtime("<html><body></body></html>");
let err = rt.evaluate_for_cdp("Promise.reject(new Error('boom'))", true, true).await.unwrap_err();
assert!(err.contains("boom"));
}
#[tokio::test(flavor = "current_thread")]
async fn test_call_function_on_dom_interaction() {
let mut rt = setup_runtime(r#"<div id="items"><span>A</span><span>B</span></div>"#);
let args = vec![serde_json::json!({"value": "span"})];
let result = rt
.call_function_on(
"(sel) => document.querySelectorAll(sel).length",
None,
&args,
true,
)
.await.unwrap();
assert_eq!(result.value.unwrap().as_f64().unwrap() as i64, 2);
}
#[test]
fn test_inner_html_setter() {
let mut rt = setup_runtime(r#"<div id="target"><p>Old</p></div>"#);
rt.execute_script("test", r#"
var el = document.getElementById('target');
el.innerHTML = '<strong>Bold</strong><em>Italic</em>';
"#).unwrap();
let result = rt.evaluate("document.getElementById('target').innerHTML").unwrap();
let html = result.as_str().unwrap();
assert!(html.contains("<strong>"), "innerHTML should contain <strong>, got: {}", html);
assert!(html.contains("<em>"), "innerHTML should contain <em>, got: {}", html);
assert!(!html.contains("Old"), "innerHTML should not contain old content, got: {}", html);
}
#[test]
fn test_inner_html_with_nested() {
let mut rt = setup_runtime(r#"<div id="root"></div>"#);
rt.execute_script("test", r#"
var el = document.getElementById('root');
el.innerHTML = '<ul><li>A</li><li>B</li><li>C</li></ul>';
"#).unwrap();
let count = rt.evaluate("document.querySelectorAll('li').length").unwrap();
assert_eq!(count.as_f64().unwrap() as i64, 3, "Should find 3 li elements after innerHTML set");
let text = rt.evaluate("document.querySelector('li').textContent").unwrap();
assert_eq!(text, serde_json::json!("A"));
}
#[test]
fn test_input_value() {
let mut rt = setup_runtime(r#"<form><input id="name" type="text" value="initial"><textarea id="bio">old text</textarea></form>"#);
let val = rt.evaluate("document.getElementById('name').value").unwrap();
assert_eq!(val, serde_json::json!("initial"));
rt.execute_script("test", "document.getElementById('name').value = 'new value';").unwrap();
let val2 = rt.evaluate("document.getElementById('name').value").unwrap();
assert_eq!(val2, serde_json::json!("new value"));
let bio = rt.evaluate("document.getElementById('bio').value").unwrap();
assert_eq!(bio, serde_json::json!("old text"));
}
#[test]
fn test_sequential_runtime_swap() {
let mut rt1 = setup_runtime("<html><body><h1>Page1</h1></body></html>");
let title1 = rt1.evaluate("document.querySelector('h1').textContent").unwrap();
assert_eq!(title1, serde_json::json!("Page1"));
let dom1 = rt1.take_dom();
drop(rt1);
let mut rt2 = setup_runtime("<html><body><h1>Page2</h1></body></html>");
let title2 = rt2.evaluate("document.querySelector('h1').textContent").unwrap();
assert_eq!(title2, serde_json::json!("Page2"));
drop(rt2);
if let Some(dom) = dom1 {
let mut rt1b = ObscuraJsRuntime::new();
rt1b.set_dom(dom);
rt1b.set_url("http://example.com");
rt1b.set_title("Page1");
rt1b.run_page_init();
let title1b = rt1b.evaluate("document.querySelector('h1').textContent").unwrap();
assert_eq!(title1b, serde_json::json!("Page1"));
}
}
#[test]
fn test_checkbox_checked() {
let mut rt = setup_runtime(r#"<input id="cb" type="checkbox" checked>"#);
let checked = rt.evaluate("document.getElementById('cb').checked").unwrap();
assert_eq!(checked, serde_json::json!(true));
rt.execute_script("test", "document.getElementById('cb').checked = false;").unwrap();
let checked2 = rt.evaluate("document.getElementById('cb').checked").unwrap();
assert_eq!(checked2, serde_json::json!(false));
}
// Issue #324: React/Preact/Vue install a value tracker by redefining `value`
// on the element instance so they can tell a real edit from their own
// controlled write. __obscura_setFieldValue must write through the prototype
// setter, leaving that per-instance tracker stale, so the following input
// event reads as a genuine change and onChange fires. A plain assignment
// keeps the tracker in sync and suppresses onChange.
#[test]
fn set_field_value_bypasses_instance_value_wrapper() {
let mut rt = setup_runtime(r#"<input id="i">"#);
let result = rt
.evaluate(
r#"
(function(){
var el = document.getElementById('i');
var d = Object.getOwnPropertyDescriptor(el.constructor.prototype, 'value');
var set = d.set, get = d.get, tracked = '' + el.value;
Object.defineProperty(el, 'value', {
configurable: true,
get: function(){ return get.call(this); },
set: function(v){ tracked = '' + v; set.call(this, v); },
});
el.value = 'wrapped';
var afterDirect = { value: el.value, tracked: tracked };
globalThis.__obscura_setFieldValue(el, 'value', 'native');
var afterHelper = { value: el.value, tracked: tracked };
return JSON.stringify({ afterDirect: afterDirect, afterHelper: afterHelper });
})()
"#,
)
.unwrap();
let parsed: serde_json::Value = serde_json::from_str(result.as_str().unwrap()).unwrap();
// Direct assignment keeps tracker == value (the change that suppresses onChange).
assert_eq!(parsed["afterDirect"]["value"], "wrapped");
assert_eq!(parsed["afterDirect"]["tracked"], "wrapped");
// The helper updates the value but leaves the tracker stale, so onChange fires.
assert_eq!(parsed["afterHelper"]["value"], "native");
assert_eq!(parsed["afterHelper"]["tracked"], "wrapped");
}
// Issue #324: React feature-detects the modern input-event path with
// `('oninput' in document)`. If the GlobalEventHandlers on* attributes are
// only on window (not Document/Element), that check fails and React falls
// back to a legacy change-detection path, so controlled-input onChange never
// fires. These must be present on document and Element.prototype too.
#[test]
fn global_event_handlers_present_on_document_and_element() {
let mut rt = setup_runtime("<div></div>");
let result = rt
.evaluate(
r#"JSON.stringify({
docInput: ('oninput' in document),
docChange: ('onchange' in document),
docClick: ('onclick' in document),
elProtoInput: ('oninput' in Element.prototype),
winInput: ('oninput' in window)
})"#,
)
.unwrap();
let p: serde_json::Value = serde_json::from_str(result.as_str().unwrap()).unwrap();
assert_eq!(p["docInput"], true);
assert_eq!(p["docChange"], true);
assert_eq!(p["docClick"], true);
assert_eq!(p["elProtoInput"], true);
assert_eq!(p["winInput"], true);
}
#[test]
fn test_matches_and_closest() {
let mut rt = setup_runtime(r#"<div class="outer"><div class="inner"><span id="target">Hi</span></div></div>"#);
let matches = rt.evaluate("document.getElementById('target').matches('span')").unwrap();
assert_eq!(matches, serde_json::json!(true));
let closest = rt.evaluate("document.getElementById('target').closest('.outer').className").unwrap();
assert_eq!(closest, serde_json::json!("outer"));
let no_match = rt.evaluate("document.getElementById('target').closest('.nonexistent')").unwrap();
assert_eq!(no_match, serde_json::Value::Null);
}
#[test]
fn shallow_element_clone_preserves_interface_attributes_and_isolation() {
let mut rt = setup_runtime(
r#"<section id="src" class="source" data-token="original"><span>child</span></section>"#,
);
let result = rt
.evaluate(
r#"
const source = document.getElementById('src');
const clone = source.cloneNode(false);
clone.className = 'clone';
source.setAttribute('data-token', 'changed');
return [
clone instanceof Node,
clone instanceof Element,
clone instanceof HTMLElement,
typeof clone.outerHTML,
typeof clone.querySelectorAll,
clone.tagName,
clone.id,
clone.className,
clone.getAttribute('data-token'),
clone.childNodes.length,
clone.ownerDocument === document,
clone.parentNode === null,
clone !== source,
source.className,
source.getAttribute('data-token'),
source.childNodes.length,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true, true, true, "string", "function", "SECTION", "src", "clone",
"original", 0, true, true, true, "source", "changed", 1
])
);
}
#[test]
fn deep_document_element_clone_stays_an_independent_html_element() {
let mut rt = setup_runtime(
r#"<html lang="en" data-root="original"><head><title>Clone</title></head><body><main id="app" data-state="source"><p class="item">original text</p></main></body></html>"#,
);
let result = rt
.evaluate(
r#"
const source = document.documentElement;
const clone = source.cloneNode(true);
const cloneItem = clone.querySelector('.item');
const sourceItem = source.querySelector('.item');
cloneItem.textContent = 'clone text';
source.querySelector('#app').setAttribute('data-state', 'changed');
clone.setAttribute('lang', 'fr');
return [
clone instanceof Element,
clone instanceof HTMLElement,
clone.tagName,
typeof clone.outerHTML,
typeof clone.querySelectorAll,
clone.querySelectorAll('head, body, main, p').length,
clone.ownerDocument === document,
clone.parentNode === null,
clone !== source,
clone.querySelector('body') !== document.body,
clone.getAttribute('data-root'),
clone.getAttribute('lang'),
source.getAttribute('lang'),
cloneItem.textContent,
sourceItem.textContent,
clone.querySelector('#app').getAttribute('data-state'),
source.querySelector('#app').getAttribute('data-state'),
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true, true, "HTML", "string", "function", 4, true, true, true,
true, "original", "fr", "en", "clone text", "original text",
"source", "changed"
])
);
}
#[test]
fn test_evaluate_multistatement() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate("var x = 5; var y = 10; return x + y;").unwrap();
assert_eq!(result.as_f64().unwrap() as i64, 15);
}
#[tokio::test(flavor = "current_thread")]
async fn test_object_ref_as_argument() {
let mut rt = setup_runtime("<html><body></body></html>");
let obj = rt
.call_function_on("() => ({ x: 42 })", None, &[], false)
.await.unwrap();
let oid = obj.object_id.unwrap();
let args = vec![serde_json::json!({"objectId": oid})];
let result = rt
.call_function_on("(obj) => obj.x * 2", None, &args, true)
.await.unwrap();
assert_eq!(result.value.unwrap().as_f64().unwrap() as i64, 84);
}
fn setup_runtime_with_cookies(html: &str) -> (ObscuraJsRuntime, std::sync::Arc<obscura_net::CookieJar>) {
let dom = obscura_dom::parse_html(html);
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let mut rt = ObscuraJsRuntime::new();
rt.set_dom(dom);
rt.set_url("http://example.com/test");
rt.set_title("Test Page");
rt.set_cookie_jar(jar.clone());
rt.run_page_init();
(rt, jar)
}
#[test]
fn test_document_cookie_reads_http_cookies() {
let (mut rt, jar) = setup_runtime_with_cookies("<html><body></body></html>");
let url = url::Url::parse("http://example.com/test").unwrap();
jar.set_cookie("session=abc123; Path=/", &url);
jar.set_cookie("theme=dark; Path=/", &url);
let result = rt.evaluate("document.cookie").unwrap();
let cookie_str = result.as_str().unwrap();
assert!(cookie_str.contains("session=abc123"), "expected session cookie, got: {}", cookie_str);
assert!(cookie_str.contains("theme=dark"), "expected theme cookie, got: {}", cookie_str);
}
#[test]
fn test_document_cookie_excludes_httponly() {
let (mut rt, jar) = setup_runtime_with_cookies("<html><body></body></html>");
let url = url::Url::parse("http://example.com/test").unwrap();
jar.set_cookie("visible=yes; Path=/", &url);
jar.set_cookie("secret=token; Path=/; HttpOnly", &url);
let result = rt.evaluate("document.cookie").unwrap();
let cookie_str = result.as_str().unwrap();
assert!(cookie_str.contains("visible=yes"), "expected visible cookie, got: {}", cookie_str);
assert!(!cookie_str.contains("secret"), "httpOnly cookie should not be visible to JS, got: {}", cookie_str);
}
#[test]
fn test_document_cookie_setter_stores_in_jar() {
let (mut rt, jar) = setup_runtime_with_cookies("<html><body></body></html>");
rt.evaluate("document.cookie = 'foo=bar; Path=/'").unwrap();
let url = url::Url::parse("http://example.com/test").unwrap();
let result = rt.evaluate("document.cookie").unwrap();
assert!(result.as_str().unwrap().contains("foo=bar"));
let header = jar.get_cookie_header(&url);
assert!(header.contains("foo=bar"), "cookie should be in jar, got: {}", header);
}
#[test]
fn test_document_cookie_delete_via_max_age() {
let (mut rt, jar) = setup_runtime_with_cookies("<html><body></body></html>");
let url = url::Url::parse("http://example.com/test").unwrap();
rt.evaluate("document.cookie = 'temp=val; Path=/'").unwrap();
assert!(rt.evaluate("document.cookie").unwrap().as_str().unwrap().contains("temp=val"));
rt.evaluate("document.cookie = 'temp=; Max-Age=0'").unwrap();
let result = rt.evaluate("document.cookie").unwrap();
assert!(!result.as_str().unwrap().contains("temp="), "cookie should be deleted, got: {}", result);
assert!(!jar.get_cookie_header(&url).contains("temp="));
}
#[test]
fn test_document_cookie_js_and_http_merge() {
let (mut rt, jar) = setup_runtime_with_cookies("<html><body></body></html>");
let url = url::Url::parse("http://example.com/test").unwrap();
jar.set_cookie("server_sid=xyz; Path=/", &url);
rt.evaluate("document.cookie = 'client_pref=light'").unwrap();
let result = rt.evaluate("document.cookie").unwrap();
let cookie_str = result.as_str().unwrap();
assert!(cookie_str.contains("server_sid=xyz"), "expected server cookie, got: {}", cookie_str);
assert!(cookie_str.contains("client_pref=light"), "expected client cookie, got: {}", cookie_str);
}
#[test]
fn test_document_cookie_empty_when_no_cookies() {
let (mut rt, _jar) = setup_runtime_with_cookies("<html><body></body></html>");
let result = rt.evaluate("document.cookie").unwrap();
assert_eq!(result.as_str().unwrap(), "");
}
#[test]
fn test_document_cookie_no_jar_returns_empty() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate("document.cookie").unwrap();
assert_eq!(result.as_str().unwrap(), "");
}
#[test]
fn test_document_write_appends_to_body() {
let mut rt = setup_runtime("<html><body><p>Existing</p></body></html>");
rt.evaluate("document.write('<div>Added</div>')").unwrap();
let html = rt.evaluate("document.body.innerHTML").unwrap();
let body = html.as_str().unwrap();
assert!(body.contains("Existing"), "existing content should remain, got: {}", body);
assert!(body.contains("Added"), "written content should appear, got: {}", body);
}
#[test]
fn test_document_writeln() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate("document.writeln('Hello')").unwrap();
let html = rt.evaluate("document.body.innerHTML").unwrap();
assert!(html.as_str().unwrap().contains("Hello"));
}
#[test]
fn test_document_write_multiple_args() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate("document.write('Hello', ' ', 'World')").unwrap();
let text = rt.evaluate("document.body.textContent").unwrap();
assert_eq!(text.as_str().unwrap().trim(), "Hello World");
}
#[test]
fn test_document_open_clears_body() {
let mut rt = setup_runtime("<html><body><p>Old content</p></body></html>");
rt.evaluate("document.open()").unwrap();
let html = rt.evaluate("document.body.innerHTML").unwrap();
assert_eq!(html.as_str().unwrap(), "");
}
#[test]
fn test_document_write_html_elements() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.evaluate(r#"document.write('<h1 id="title">Test</h1><p>Para</p>')"#).unwrap();
let h1 = rt.evaluate("document.querySelector('h1').textContent").unwrap();
assert_eq!(h1.as_str().unwrap(), "Test");
let p = rt.evaluate("document.querySelector('p').textContent").unwrap();
assert_eq!(p.as_str().unwrap(), "Para");
}
#[test]
fn test_url_relative_resolution() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate("new URL('data.json', 'http://example.com/path/page.html').href").unwrap();
assert_eq!(result.as_str().unwrap(), "http://example.com/path/data.json");
let result = rt.evaluate("new URL('/api/data', 'http://example.com/path/page.html').href").unwrap();
assert_eq!(result.as_str().unwrap(), "http://example.com/api/data");
let result = rt.evaluate("new URL('https://other.com/foo', 'http://example.com/bar').href").unwrap();
assert_eq!(result.as_str().unwrap(), "https://other.com/foo");
let result = rt.evaluate("new URL('sub/file.js', 'http://example.com/a/b/c.html').href").unwrap();
assert_eq!(result.as_str().unwrap(), "http://example.com/a/b/sub/file.js");
let result = rt.evaluate("new URL('api.json', 'http://localhost:8080/dir/index.html').href").unwrap();
assert_eq!(result.as_str().unwrap(), "http://localhost:8080/dir/api.json");
}
#[tokio::test(flavor = "current_thread")]
async fn test_fetch_url_input_decodes_binary_body_base64() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.call_function_on_for_cdp(
r#"async () => {
const originalFetchOp = Deno.core.ops.op_fetch_url;
try {
Deno.core.ops.op_fetch_url = (url) => {
globalThis.__capturedFetchUrl = url;
return JSON.stringify({
status: 200,
headers: { "content-type": "application/wasm" },
bodyBase64: "AGFzbQEAAAA=",
url,
});
};
const response = await fetch(new URL("/pkg/app_bg.wasm", document.URL));
const bytes = Array.from(new Uint8Array(await response.arrayBuffer()));
return { url: globalThis.__capturedFetchUrl, bytes };
} finally {
Deno.core.ops.op_fetch_url = originalFetchOp;
}
}"#,
None,
&[],
true,
true,
).await.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!({
"url": "http://example.com/pkg/app_bg.wasm",
"bytes": [0, 97, 115, 109, 1, 0, 0, 0],
})
);
}
#[tokio::test(flavor = "current_thread")]
async fn fetch_and_xhr_forward_browser_credentials_modes() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.call_function_on_for_cdp(
r#"async () => {
const originalFetchOp = Deno.core.ops.op_fetch_url;
const calls = [];
try {
Deno.core.ops.op_fetch_url =
(url, method, headers, body, origin, mode, credentials) => {
calls.push({ url, credentials });
return JSON.stringify({
status: 200,
headers: {},
body: "ok",
url,
});
};
await fetch("/default");
await fetch("/omit", { credentials: "omit" });
const request = new Request("/included", { credentials: "include" });
await fetch(request);
await fetch(request.clone());
await fetch(request, { credentials: "same-origin" });
const sendXhr = (path, withCredentials) => new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.open("GET", path);
xhr.withCredentials = withCredentials;
xhr.onload = resolve;
xhr.onerror = reject;
xhr.send();
});
await sendXhr("/xhr-default", false);
await sendXhr("/xhr-credentialed", true);
let invalidFetchRejected = false;
try {
await fetch("/bad", { credentials: "invalid" });
} catch (error) {
invalidFetchRejected = error instanceof TypeError;
}
return { calls, invalidFetchRejected };
} finally {
Deno.core.ops.op_fetch_url = originalFetchOp;
}
}"#,
None,
&[],
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!({
"calls": [
{ "url": "http://example.com/default", "credentials": "same-origin" },
{ "url": "http://example.com/omit", "credentials": "omit" },
{ "url": "http://example.com/included", "credentials": "include" },
{ "url": "http://example.com/included", "credentials": "include" },
{ "url": "http://example.com/included", "credentials": "same-origin" },
{ "url": "http://example.com/xhr-default", "credentials": "same-origin" },
{ "url": "http://example.com/xhr-credentialed", "credentials": "include" },
],
"invalidFetchRejected": true,
})
);
}
#[tokio::test(flavor = "current_thread")]
async fn dynamic_linked_stylesheet_enters_the_live_dom_with_imports_rebased() {
let mut rt = setup_runtime(
"<html><head></head><body><div class=\"card\"></div></body></html>",
);
let result = rt
.call_function_on_for_cdp(
r#"async () => {
const originalFetchOp = Deno.core.ops.op_fetch_url;
try {
Deno.core.ops.op_fetch_url = (url) => JSON.stringify({
status: 200,
headers: { "content-type": "text/css" },
body: url.endsWith("/assets/route.css")
? '@import "./theme/base.css"; .card { display:grid; background-image:url("../img/card.png") }'
: '.card { color:red; background-image:url("./grain.png") }',
url,
});
const link = document.createElement("link");
link.setAttribute("rel", "stylesheet");
link.setAttribute("href", "/assets/route.css");
const loaded = new Promise(resolve => {
link.onload = () => resolve();
});
document.head.appendChild(link);
await loaded;
const style = document.querySelector("style[data-obscura-linked]");
const css = style.textContent;
const afterLink = link.nextSibling === style;
link.remove();
return {
afterLink,
importedBeforeRoute:
css.indexOf("color:red") < css.indexOf("display:grid"),
importedUrl:
css.includes("http://example.com/assets/theme/grain.png"),
routeUrl:
css.includes("http://example.com/img/card.png"),
removedWithLink:
!document.querySelector("style[data-obscura-linked]"),
};
} finally {
Deno.core.ops.op_fetch_url = originalFetchOp;
}
}"#,
None,
&[],
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!({
"afterLink": true,
"importedBeforeRoute": true,
"importedUrl": true,
"routeUrl": true,
"removedWithLink": true,
})
);
}
#[tokio::test(flavor = "current_thread")]
async fn unsuccessful_dynamic_script_response_fires_error_without_evaluating_body() {
let mut rt = setup_runtime("<html><head></head><body></body></html>");
let result = rt
.call_function_on_for_cdp(
r#"async () => {
const originalFetchOp = Deno.core.ops.op_fetch_url;
try {
Deno.core.ops.op_fetch_url = (url) => JSON.stringify({
status: 401,
headers: { "content-type": "application/json" },
body: "globalThis.__executedFailedScript = true",
url,
});
const script = document.createElement("script");
script.src = "/unauthorized.js";
const outcome = await new Promise(resolve => {
script.onload = () => resolve("load");
script.onerror = () => resolve("error");
document.head.appendChild(script);
});
return {
outcome,
executed: globalThis.__executedFailedScript === true,
};
} finally {
Deno.core.ops.op_fetch_url = originalFetchOp;
}
}"#,
None,
&[],
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!({
"outcome": "error",
"executed": false,
})
);
}
#[tokio::test(flavor = "current_thread")]
async fn test_response_array_buffer_preserves_typed_array_view() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.call_function_on_for_cdp(
r#"async () => {
const bytes = new Uint8Array([9, 0, 97, 115, 109, 1, 8]);
const response = new Response(bytes.subarray(1, 6));
return Array.from(new Uint8Array(await response.arrayBuffer()));
}"#,
None,
&[],
true,
true,
).await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!([0, 97, 115, 109, 1]));
}
#[tokio::test(flavor = "current_thread")]
async fn test_wasm_instantiate_streaming_uses_response_array_buffer() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.call_function_on_for_cdp(
r#"async () => {
const bytes = new Uint8Array([0, 97, 115, 109, 1, 0, 0, 0]);
const result = await WebAssembly.instantiateStreaming(
Promise.resolve(new Response(bytes)),
{},
);
return result.instance instanceof WebAssembly.Instance;
}"#,
None,
&[],
true,
true,
).await.unwrap();
assert_eq!(result.value.unwrap(), serde_json::json!(true));
}
#[test]
fn test_text_decoder_respects_typed_array_view() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate(
"new TextDecoder().decode(new Uint8Array([65, 66, 67]).subarray(1, 2))"
).unwrap();
assert_eq!(result.as_str().unwrap(), "B");
}
#[test]
fn test_document_doctype() {
let mut rt = setup_runtime("<!DOCTYPE html><html><body></body></html>");
let result = rt.evaluate("document.doctype !== null").unwrap();
assert_eq!(result, serde_json::json!(true));
let name = rt.evaluate("document.doctype.name").unwrap();
assert_eq!(name, serde_json::json!("html"));
let node_type = rt.evaluate("document.doctype.nodeType").unwrap();
assert_eq!(node_type.as_f64().unwrap() as i64, 10);
}
#[test]
fn test_document_doctype_null_when_missing() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt.evaluate("document.doctype === null").unwrap();
assert_eq!(result, serde_json::json!(true));
}
#[test]
fn test_xml_serializer_doctype() {
let mut rt = setup_runtime("<!DOCTYPE html><html><body></body></html>");
let result = rt.evaluate(
"new XMLSerializer().serializeToString(document.doctype)"
).unwrap();
assert_eq!(result.as_str().unwrap(), "<!DOCTYPE html>");
}
#[test]
fn test_xml_serializer_element() {
let mut rt = setup_runtime(r#"<html><body><div id="x">Hello</div></body></html>"#);
let result = rt.evaluate(
"new XMLSerializer().serializeToString(document.getElementById('x'))"
).unwrap();
let html = result.as_str().unwrap();
assert!(html.contains("<div"));
assert!(html.contains("Hello"));
}
#[test]
fn test_create_event_custom_event_has_init_method() {
let mut rt = setup_runtime("<html><body></body></html>");
let kind = rt
.evaluate("typeof document.createEvent('CustomEvent').initCustomEvent")
.unwrap();
assert_eq!(kind, serde_json::json!("function"));
}
#[test]
fn test_init_custom_event_sets_fields() {
let mut rt = setup_runtime("<html><body></body></html>");
rt.execute_script(
"test",
r#"
globalThis.__e = document.createEvent('CustomEvent');
globalThis.__e.initCustomEvent('myevent', true, false, {hello: 'world'});
"#,
)
.unwrap();
let t = rt.evaluate("globalThis.__e.type").unwrap();
assert_eq!(t, serde_json::json!("myevent"));
let b = rt.evaluate("globalThis.__e.bubbles").unwrap();
assert_eq!(b, serde_json::json!(true));
let c = rt.evaluate("globalThis.__e.cancelable").unwrap();
assert_eq!(c, serde_json::json!(false));
let d = rt.evaluate("globalThis.__e.detail.hello").unwrap();
assert_eq!(d, serde_json::json!("world"));
}
#[test]
fn test_create_event_returns_correct_class() {
let mut rt = setup_runtime("<html><body></body></html>");
let cust = rt
.evaluate("document.createEvent('CustomEvent') instanceof CustomEvent")
.unwrap();
assert_eq!(cust, serde_json::json!(true));
let mouse = rt
.evaluate("document.createEvent('MouseEvent') instanceof MouseEvent")
.unwrap();
assert_eq!(mouse, serde_json::json!(true));
let mouses = rt
.evaluate("document.createEvent('MouseEvents') instanceof MouseEvent")
.unwrap();
assert_eq!(mouses, serde_json::json!(true));
let kb = rt
.evaluate("document.createEvent('KeyboardEvent') instanceof KeyboardEvent")
.unwrap();
assert_eq!(kb, serde_json::json!(true));
}
#[test]
fn cssstyledeclaration_is_a_usable_global_interface() {
// CSSStyleDeclaration was pre-declared non-enumerable but never assigned
// a value (the only WebIDL interface missing its globalThis.X = X line),
// so it was `undefined` while `'CSSStyleDeclaration' in window` was true,
// and `el.style instanceof CSSStyleDeclaration` threw. It must be a real
// constructor, non-enumerable like a browser, and the type of .style.
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate("(function(){var d=Object.getOwnPropertyDescriptor(window,'CSSStyleDeclaration');return (typeof window.CSSStyleDeclaration)+'|'+(document.body.style instanceof CSSStyleDeclaration)+'|'+(d?d.enumerable:'missing');})()")
.unwrap();
assert_eq!(v, serde_json::json!("function|true|false"));
}
#[test]
fn test_create_event_unknown_type_returns_event() {
let mut rt = setup_runtime("<html><body></body></html>");
let kind = rt
.evaluate("document.createEvent('NotARealType') instanceof Event")
.unwrap();
assert_eq!(kind, serde_json::json!(true));
}
#[test]
fn event_constructor_matches_webidl_conformance() {
// new Event()/new CustomEvent() must throw (type is a required arg),
// the type argument must be coerced to a string, CustomEvent.detail must
// default to null (not undefined), createEvent must still build a
// type-"" event, and an explicit detail must be preserved.
let mut rt = setup_runtime("<html><body></body></html>");
let v = rt
.evaluate(
"(function(){\
var out=[];\
try{new Event();out.push('no-throw')}catch(e){out.push(e.name)}\
try{new CustomEvent();out.push('no-throw')}catch(e){out.push(e.name)}\
out.push(new Event(123).type+':'+typeof new Event(123).type);\
out.push(String(new CustomEvent('x').detail));\
out.push(String(new CustomEvent('x',{detail:7}).detail));\
out.push(new Event('click').type);\
out.push(JSON.stringify(document.createEvent('Event').type));\
return out.join('|');\
})()",
)
.unwrap();
assert_eq!(
v,
serde_json::json!("TypeError|TypeError|123:string|null|7|click|\"\"")
);
}
#[test]
fn test_promise_rejection_event_requires_promise() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"(() => {
const promise = Promise.resolve(1);
const event = new PromiseRejectionEvent('unhandledrejection', {
promise,
reason: 'failed'
});
let missingPromiseThrows = false;
try {
new PromiseRejectionEvent('unhandledrejection');
} catch (error) {
missingPromiseThrows = error instanceof TypeError;
}
return [
event instanceof Event,
event.promise === promise,
event.reason === 'failed',
missingPromiseThrows
];
})()"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([true, true, true, true]));
}
#[test]
fn test_create_event_rejects_promise_rejection_event() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"(() => {
try {
document.createEvent('PromiseRejectionEvent');
return null;
} catch (error) {
return [error.name, error instanceof DOMException];
}
})()"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!(["NotSupportedError", true])
);
}
#[test]
fn test_storage_event_constructor_and_legacy_factory() {
let mut rt = setup_runtime("<html><body></body></html>");
let result = rt
.evaluate(
r#"(() => {
const event = new StorageEvent('storage', {
key: 'theme',
oldValue: 'light',
newValue: 'dark',
url: 'https://example.test/'
});
const legacy = document.createEvent('StorageEvent');
legacy.initStorageEvent(
'storage', false, false, 'count', '1', '2',
'https://example.test/', null
);
return [
event instanceof Event,
event.key,
event.oldValue,
event.newValue,
event.url,
legacy instanceof StorageEvent,
legacy.key,
legacy.newValue
];
})()"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true,
"theme",
"light",
"dark",
"https://example.test/",
true,
"count",
"2"
])
);
}
#[test]
fn test_html_to_markdown_headings() {
let mut rt = setup_runtime("<html><body><h1>Title</h1><h2>Sub</h2><p>Body</p></body></html>");
let md = rt
.evaluate(crate::HTML_TO_MARKDOWN_JS)
.unwrap()
.as_str()
.unwrap()
.to_string();
assert!(md.contains("# Title"), "missing H1: {}", md);
assert!(md.contains("## Sub"), "missing H2: {}", md);
assert!(md.contains("Body"), "missing paragraph text: {}", md);
}
#[test]
fn test_html_to_markdown_links_and_inline() {
let mut rt = setup_runtime(
r#"<html><body><p>Hello <strong>world</strong> <a href="https://x.test/">link</a> <em>em</em></p></body></html>"#,
);
let md = rt
.evaluate(crate::HTML_TO_MARKDOWN_JS)
.unwrap()
.as_str()
.unwrap()
.to_string();
assert!(md.contains("**world**"), "missing strong: {}", md);
assert!(md.contains("*em*"), "missing em: {}", md);
assert!(
md.contains("[link](https://x.test/)"),
"missing link: {}",
md
);
}
#[test]
fn test_html_to_markdown_lists() {
let mut rt = setup_runtime(
"<html><body><ul><li>A</li><li>B</li></ul><ol><li>X</li><li>Y</li></ol></body></html>",
);
let md = rt
.evaluate(crate::HTML_TO_MARKDOWN_JS)
.unwrap()
.as_str()
.unwrap()
.to_string();
assert!(md.contains("- A"), "missing unordered A: {}", md);
assert!(md.contains("- B"), "missing unordered B: {}", md);
assert!(md.contains("1. X"), "missing ordered X: {}", md);
}
#[test]
fn test_html_to_markdown_skips_script_and_style() {
let mut rt = setup_runtime(
"<html><body><p>Text</p><script>alert(1)</script><style>body{color:red}</style></body></html>",
);
let md = rt
.evaluate(crate::HTML_TO_MARKDOWN_JS)
.unwrap()
.as_str()
.unwrap()
.to_string();
assert!(md.contains("Text"), "missing visible text: {}", md);
assert!(!md.contains("alert"), "leaked script content: {}", md);
assert!(!md.contains("color:red"), "leaked style content: {}", md);
}
#[test]
fn test_page_content_puppeteer_pattern() {
let mut rt = setup_runtime("<!DOCTYPE html><html><head></head><body><p>Test</p></body></html>");
let result = rt.evaluate(
"(function() { let retVal = ''; if (document.doctype) retVal = new XMLSerializer().serializeToString(document.doctype); if (document.documentElement) retVal += document.documentElement.outerHTML; return retVal; })()"
).unwrap();
let html = result.as_str().unwrap();
assert!(html.starts_with("<!DOCTYPE html>"));
assert!(html.contains("<html>"));
assert!(html.contains("<p>Test</p>"));
}
#[test]
fn test_element_from_point_is_function() {
let mut rt = setup_runtime("<html><body></body></html>");
let kind = rt.evaluate("typeof document.elementFromPoint").unwrap();
assert_eq!(kind, serde_json::json!("function"));
let kind2 = rt.evaluate("typeof document.elementsFromPoint").unwrap();
assert_eq!(kind2, serde_json::json!("function"));
}
#[test]
fn test_element_from_point_in_viewport_returns_body() {
let mut rt = setup_runtime("<html><body><h1>Hi</h1></body></html>");
let tag = rt.evaluate("document.elementFromPoint(10, 10)?.tagName").unwrap();
assert_eq!(tag, serde_json::json!("BODY"));
}
#[test]
fn test_element_from_point_out_of_viewport_returns_null() {
let mut rt = setup_runtime("<html><body></body></html>");
let neg_x = rt.evaluate("document.elementFromPoint(-1, 10)").unwrap();
assert_eq!(neg_x, serde_json::Value::Null);
let neg_y = rt.evaluate("document.elementFromPoint(10, -1)").unwrap();
assert_eq!(neg_y, serde_json::Value::Null);
let huge = rt.evaluate("document.elementFromPoint(99999, 99999)").unwrap();
assert_eq!(huge, serde_json::Value::Null);
}
#[test]
fn test_elements_from_point_returns_array() {
let mut rt = setup_runtime("<html><body></body></html>");
let len_in = rt.evaluate("document.elementsFromPoint(10, 10).length").unwrap();
assert_eq!(len_in.as_f64().unwrap() as i64, 1);
let len_out = rt.evaluate("document.elementsFromPoint(-1, -1).length").unwrap();
assert_eq!(len_out.as_f64().unwrap() as i64, 0);
}
#[test]
fn test_element_from_point_non_numeric_returns_null() {
let mut rt = setup_runtime("<html><body></body></html>");
let nan = rt.evaluate("document.elementFromPoint(NaN, 10)").unwrap();
assert_eq!(nan, serde_json::Value::Null);
let inf = rt.evaluate("document.elementFromPoint(Infinity, 10)").unwrap();
assert_eq!(inf, serde_json::Value::Null);
}
fn spawn_one_response_server(status: &str, body: &str) -> String {
let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
let address = listener.local_addr().unwrap();
let status = status.to_string();
let body = body.to_string();
std::thread::spawn(move || {
use std::io::{Read as _, Write as _};
let (mut stream, _) = listener.accept().unwrap();
let mut request = [0u8; 2048];
let _ = stream.read(&mut request);
let response = format!(
"HTTP/1.1 {}\r\nContent-Type: application/javascript\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{}",
status,
body.len(),
body
);
stream.write_all(response.as_bytes()).unwrap();
});
format!("http://{}", address)
}
#[derive(Clone, Copy)]
enum ModuleGraphFixture {
CookieProtected,
RedirectedChild,
}
fn spawn_module_graph_server(
fixture: ModuleGraphFixture,
) -> (String, std::sync::mpsc::Receiver<String>) {
let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
let address = listener.local_addr().unwrap();
let (requests_tx, requests_rx) = std::sync::mpsc::channel();
let request_count = match fixture {
ModuleGraphFixture::CookieProtected => 2,
ModuleGraphFixture::RedirectedChild => 3,
};
std::thread::spawn(move || {
use std::io::{Read as _, Write as _};
for _ in 0..request_count {
let (mut stream, _) = listener.accept().unwrap();
let mut request = vec![0u8; 8192];
let length = stream.read(&mut request).unwrap();
let request = String::from_utf8_lossy(&request[..length]).to_string();
let lower_request = request.to_ascii_lowercase();
let path = request
.lines()
.next()
.and_then(|line| line.split_ascii_whitespace().nth(1))
.unwrap_or("/")
.to_string();
requests_tx.send(request.clone()).unwrap();
let (status, extra_headers, body) = match (fixture, path.as_str()) {
(ModuleGraphFixture::CookieProtected, "/entry.js") => (
"200 OK",
"",
"import { value } from './child.js'; \
globalThis.__module_graph_value = value;",
),
(ModuleGraphFixture::CookieProtected, "/child.js")
if lower_request.contains("\r\ncookie: session=ok\r\n")
&& lower_request
.contains("\r\nuser-agent: modulegraphtest/1.0\r\n")
&& lower_request.contains("\r\nx-module-test: shared\r\n") =>
{
("200 OK", "", "export const value = 'cookie-child';")
}
(ModuleGraphFixture::CookieProtected, "/child.js") => (
"401 Unauthorized",
"",
"throw new Error('page request context missing');",
),
(ModuleGraphFixture::RedirectedChild, "/entry.js") => (
"200 OK",
"",
"import { value } from './redirect.js'; \
globalThis.__module_graph_value = value;",
),
(ModuleGraphFixture::RedirectedChild, "/redirect.js") => {
("302 Found", "Location: /child.js\r\n", "")
}
(ModuleGraphFixture::RedirectedChild, "/child.js") => {
("200 OK", "", "export const value = 'redirect-child';")
}
_ => ("404 Not Found", "", "not found"),
};
let response = format!(
"HTTP/1.1 {status}\r\n\
Content-Type: application/javascript\r\n\
{extra_headers}Content-Length: {}\r\n\
Connection: close\r\n\r\n{body}",
body.len(),
);
stream.write_all(response.as_bytes()).unwrap();
}
});
(format!("http://{}", address), requests_rx)
}
fn spawn_import_map_server() -> (String, std::sync::mpsc::Receiver<String>) {
let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
let address = listener.local_addr().unwrap();
let (requests_tx, requests_rx) = std::sync::mpsc::channel();
std::thread::spawn(move || {
use std::io::{Read as _, Write as _};
for _ in 0..2 {
let (mut stream, _) = listener.accept().unwrap();
let mut request = [0u8; 2048];
let length = stream.read(&mut request).unwrap();
let request = String::from_utf8_lossy(&request[..length]);
let path = request
.lines()
.next()
.and_then(|line| line.split_ascii_whitespace().nth(1))
.unwrap_or("/")
.to_string();
requests_tx.send(path.clone()).unwrap();
let (status, body) = match path.as_str() {
"/vendor/pkg/feature.js" => ("200 OK", "export const value = 'prefix-static';"),
"/vendor/dynamic.js" => ("200 OK", "export const value = 'exact-dynamic';"),
_ => ("404 Not Found", "not found"),
};
let response = format!(
"HTTP/1.1 {status}\r\n\
Content-Type: application/javascript\r\n\
Content-Length: {}\r\n\
Connection: close\r\n\r\n{body}",
body.len(),
);
stream.write_all(response.as_bytes()).unwrap();
}
});
(format!("http://{}", address), requests_rx)
}
fn spawn_root_module_import_map_server() -> (String, std::sync::mpsc::Receiver<String>) {
let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
let address = listener.local_addr().unwrap();
let (requests_tx, requests_rx) = std::sync::mpsc::channel();
std::thread::spawn(move || {
use std::io::{Read as _, Write as _};
let (mut stream, _) = listener.accept().unwrap();
let mut request = [0u8; 2048];
let length = stream.read(&mut request).unwrap();
let request = String::from_utf8_lossy(&request[..length]);
let path = request
.lines()
.next()
.and_then(|line| line.split_ascii_whitespace().nth(1))
.unwrap_or("/")
.to_string();
requests_tx.send(path.clone()).unwrap();
let body = if path == "/entry.js" {
"globalThis.__root_module_identity = 'entry';"
} else {
"globalThis.__root_module_identity = 'remapped';"
};
let response = format!(
"HTTP/1.1 200 OK\r\n\
Content-Type: application/javascript\r\n\
Content-Length: {}\r\n\
Connection: close\r\n\r\n{body}",
body.len(),
);
stream.write_all(response.as_bytes()).unwrap();
});
(format!("http://{}", address), requests_rx)
}
#[tokio::test(flavor = "current_thread")]
async fn entry_module_http_failure_is_not_evaluated_as_empty_source() {
let base = spawn_one_response_server("404 Not Found", "not found");
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar,
None,
true,
));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{}/", base));
rt.set_http_client(client);
let error = rt
.load_module(&format!("{}/entry.js", base), 1_000)
.await
.unwrap_err();
assert!(
error.contains("HTTP 404"),
"expected entry fetch status in error, got: {}",
error
);
}
#[tokio::test(flavor = "current_thread")]
async fn descendant_module_uses_page_cookie_identity_and_headers() {
let (base, requests) = spawn_module_graph_server(ModuleGraphFixture::CookieProtected);
let page_url = url::Url::parse(&format!("{}/", base)).unwrap();
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
jar.set_cookie("session=ok; Path=/", &page_url);
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar.clone(),
None,
true,
));
client.set_user_agent("ModuleGraphTest/1.0").await;
client
.set_extra_headers(std::collections::HashMap::from([(
"x-module-test".to_string(),
"shared".to_string(),
)]))
.await;
let callback_urls = std::sync::Arc::new(std::sync::Mutex::new(Vec::new()));
let callbacks = std::sync::Arc::new(obscura_net::CallbackRegistry::new());
let callback_urls_capture = callback_urls.clone();
callbacks.add_request(std::sync::Arc::new(move |request| {
callback_urls_capture
.lock()
.unwrap()
.push(request.url.path().to_string());
}));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{}/", base));
rt.set_cookie_jar(jar);
rt.set_http_client(client);
rt.set_callbacks(callbacks);
rt.load_module(&format!("{}/entry.js", base), 1_000)
.await
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__module_graph_value").unwrap(),
serde_json::json!("cookie-child"),
);
let requests = (0..2)
.map(|_| {
requests
.recv_timeout(std::time::Duration::from_secs(1))
.unwrap()
})
.collect::<Vec<_>>();
assert!(requests
.iter()
.any(|request| request.starts_with("GET /entry.js ")));
let child = requests
.iter()
.find(|request| request.starts_with("GET /child.js "))
.expect("descendant request");
let child_lower = child.to_ascii_lowercase();
assert!(
child_lower.contains("\r\ncookie: session=ok\r\n"),
"{child}"
);
assert!(
child_lower.contains("\r\nuser-agent: modulegraphtest/1.0\r\n"),
"{child}"
);
assert!(
child_lower.contains("\r\nx-module-test: shared\r\n"),
"{child}"
);
assert_eq!(
*callback_urls.lock().unwrap(),
vec!["/entry.js", "/child.js"],
);
}
#[tokio::test(flavor = "current_thread")]
async fn descendant_module_follows_page_client_redirects() {
let (base, requests) = spawn_module_graph_server(ModuleGraphFixture::RedirectedChild);
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar,
None,
true,
));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{}/", base));
rt.set_http_client(client);
rt.load_module(&format!("{}/entry.js", base), 1_000)
.await
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__module_graph_value").unwrap(),
serde_json::json!("redirect-child"),
);
let paths = (0..3)
.map(|_| {
requests
.recv_timeout(std::time::Duration::from_secs(1))
.unwrap()
.lines()
.next()
.unwrap()
.to_string()
})
.collect::<Vec<_>>();
assert_eq!(
paths,
vec![
"GET /entry.js HTTP/1.1",
"GET /redirect.js HTTP/1.1",
"GET /child.js HTTP/1.1",
],
);
}
#[tokio::test(flavor = "current_thread")]
async fn import_map_resolves_prefix_static_and_exact_dynamic_imports() {
let (base, requests) = spawn_import_map_server();
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar, None, true,
));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{}/app/index.html", base));
rt.set_http_client(client);
rt.add_import_map(
r#"{
"imports": {
"pkg/": "../vendor/pkg/",
"dynamic-pkg": "../vendor/dynamic.js"
}
}"#,
&format!("{}/config/import-map.json", base),
)
.unwrap();
rt.load_inline_module(
"import { value as prefix } from 'pkg/feature.js'; \
const dynamic = (await import('dynamic-pkg')).value; \
globalThis.__import_map_values = [prefix, dynamic];",
&format!("{}/app/index.html", base),
1_000,
)
.await
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__import_map_values").unwrap(),
serde_json::json!(["prefix-static", "exact-dynamic"]),
);
let paths = (0..2)
.map(|_| requests.recv_timeout(std::time::Duration::from_secs(1)).unwrap())
.collect::<Vec<_>>();
assert!(paths.contains(&"/vendor/pkg/feature.js".to_string()), "{paths:?}");
assert!(paths.contains(&"/vendor/dynamic.js".to_string()), "{paths:?}");
}
#[tokio::test(flavor = "current_thread")]
async fn import_map_does_not_remap_external_root_module_url() {
let (base, requests) = spawn_root_module_import_map_server();
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar, None, true,
));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{}/index.html", base));
rt.set_http_client(client);
rt.add_import_map(
&format!(r#"{{"imports":{{"{base}/entry.js":"{base}/remapped.js"}}}}"#),
&format!("{}/index.html", base),
)
.unwrap();
rt.load_module(&format!("{}/entry.js", base), 1_000).await.unwrap();
assert_eq!(
rt.evaluate("globalThis.__root_module_identity").unwrap(),
serde_json::json!("entry"),
);
assert_eq!(
requests.recv_timeout(std::time::Duration::from_secs(1)).unwrap(),
"/entry.js",
);
}
#[tokio::test(flavor = "current_thread")]
async fn inline_modules_expose_document_base_as_import_meta_url() {
let mut rt = ObscuraJsRuntime::with_base_url("https://example.com/page/index.html");
rt.load_inline_module(
"globalThis.__first_inline_url = import.meta.url;",
"https://example.com/base/",
1_000,
).await.unwrap();
rt.load_inline_module(
"globalThis.__second_inline_url = import.meta.url;",
"https://example.com/base/",
1_000,
).await.unwrap();
assert_eq!(
rt.evaluate("[globalThis.__first_inline_url, globalThis.__second_inline_url]").unwrap(),
serde_json::json!(["https://example.com/base/", "https://example.com/base/"])
);
}
#[tokio::test(flavor = "current_thread")]
async fn classic_script_url_is_dynamic_import_referrer() {
use std::io::{Read as _, Write as _};
let listener = std::net::TcpListener::bind("127.0.0.1:0").unwrap();
let address = listener.local_addr().unwrap();
let request_thread = std::thread::spawn(move || {
let (mut stream, _) = listener.accept().unwrap();
let mut request = [0u8; 2048];
let length = stream.read(&mut request).unwrap();
let path = String::from_utf8_lossy(&request[..length])
.lines().next()
.and_then(|line| line.split_ascii_whitespace().nth(1))
.unwrap_or("/").to_string();
let body = "export const value = 'scoped-classic';";
let response = format!(
"HTTP/1.1 200 OK\r\nContent-Type: application/javascript\r\nContent-Length: {}\r\nConnection: close\r\n\r\n{body}",
body.len(),
);
stream.write_all(response.as_bytes()).unwrap();
path
});
let base = format!("http://{address}");
let jar = std::sync::Arc::new(obscura_net::CookieJar::new());
let client = std::sync::Arc::new(obscura_net::ObscuraHttpClient::with_full_options(
jar, None, true,
));
let mut rt = ObscuraJsRuntime::with_base_url(&format!("{base}/page/index.html"));
rt.set_http_client(client);
rt.set_dom(parse_html("<html><body></body></html>"));
rt.run_page_init();
rt.add_import_map(
&format!(r#"{{"scopes":{{"{base}/classic/":{{"pkg":"{base}/scoped.js"}}}}}}"#),
&format!("{base}/page/index.html"),
).unwrap();
rt.execute_script(
&format!("{base}/classic/entry.js"),
"document.documentElement.setAttribute('data-classic-op', 'ran'); \
import('pkg').then(module => { globalThis.__classic_import = module.value; });",
).unwrap();
rt.run_event_loop().await.unwrap();
assert_eq!(rt.evaluate("globalThis.__classic_import").unwrap(), serde_json::json!("scoped-classic"));
assert_eq!(
rt.evaluate("document.documentElement.getAttribute('data-classic-op')").unwrap(),
serde_json::json!("ran")
);
assert_eq!(request_thread.join().unwrap(), "/scoped.js");
}
#[test]
fn timed_out_classic_script_leaves_runtime_reusable() {
let mut rt = ObscuraJsRuntime::new();
rt.execute_script_with_timeout(
"https://example.test/hang.js",
"while (true) {}",
std::time::Duration::from_millis(20),
).unwrap();
rt.execute_script(
"https://example.test/after-timeout.js",
"globalThis.__after_timeout = true;",
).unwrap();
assert_eq!(rt.evaluate("globalThis.__after_timeout").unwrap(), serde_json::json!(true));
}
#[tokio::test(flavor = "current_thread")]
async fn inline_module_graph_error_propagates() {
let mut rt = ObscuraJsRuntime::with_base_url("https://example.com/");
let error = rt
.load_inline_module("import 'bare-specifier';", "https://example.com/", 1_000)
.await
.unwrap_err();
assert!(
error.contains("Inline module load error"),
"expected graph load error, got: {}",
error
);
}
#[tokio::test(flavor = "current_thread")]
async fn inline_module_evaluation_error_propagates() {
let mut rt = ObscuraJsRuntime::with_base_url("https://example.com/");
let error = rt
.load_inline_module(
"throw new Error('module-evaluation-boom');",
"https://example.com/",
1_000,
)
.await
.unwrap_err();
assert!(
error.contains("Inline module eval error")
&& error.contains("module-evaluation-boom"),
"expected evaluation error, got: {}",
error
);
}
#[tokio::test(flavor = "current_thread")]
async fn inline_module_evaluation_timeout_propagates() {
let mut rt = ObscuraJsRuntime::with_base_url("https://example.com/");
let error = rt
.load_inline_module(
"await new Promise(resolve => setTimeout(resolve, 10000));",
"https://example.com/",
20,
)
.await
.unwrap_err();
assert!(
error.contains("Inline module evaluation timed out after 20ms"),
"expected evaluation timeout, got: {}",
error
);
}
#[tokio::test(flavor = "current_thread")]
async fn successful_inline_module_does_not_wait_for_interval_idle() {
let mut rt = ObscuraJsRuntime::with_base_url("https://example.com/");
rt.load_inline_module(
"globalThis.__module_loaded = true; setInterval(() => {}, 10000);",
"https://example.com/",
500,
)
.await
.unwrap();
assert_eq!(
rt.evaluate("globalThis.__module_loaded").unwrap(),
serde_json::json!(true)
);
}
// Issue #139 — proxy_url must thread through to both the ES-module
// loader (module_loader.rs) and op_fetch_url's reqwest client
// (ops.rs::build_request_client). Pre-fix both built clients with
// `Client::builder().build()` — no proxy — so JS fetch/XHR and
// dynamic imports silently bypassed BrowserContext.proxy_url.
//
// Phase 5.5 RED check: each test references a symbol that does NOT
// exist on main (proxy_url() accessor, with_proxy ctor,
// with_base_url_and_proxy ctor), so the tests fail to compile without
// the prod fix.
#[test]
fn http_client_round_trips_proxy_url() {
use obscura_net::{CookieJar, ObscuraHttpClient};
let jar = std::sync::Arc::new(CookieJar::new());
let configured =
ObscuraHttpClient::with_options(jar.clone(), Some("http://proxy.test:8080"));
assert_eq!(
configured.proxy_url(),
Some("http://proxy.test:8080"),
"proxy_url() must expose the value passed to with_options"
);
let direct = ObscuraHttpClient::with_options(jar, None);
assert_eq!(
direct.proxy_url(),
None,
"proxy_url() must return None when no proxy was configured"
);
}
#[test]
fn module_loader_stores_proxy_for_dynamic_imports() {
use crate::module_loader::ObscuraModuleLoader;
let loader = ObscuraModuleLoader::with_proxy(
"https://example.com/",
Some("http://proxy.test:8080".to_string()),
);
assert_eq!(loader.proxy_url.as_deref(), Some("http://proxy.test:8080"));
assert_eq!(loader.base_url, "https://example.com/");
// Default constructor must keep the historical "no proxy" behaviour.
let direct = ObscuraModuleLoader::new("https://example.com/");
assert_eq!(direct.proxy_url, None);
}
#[test]
fn runtime_with_base_url_and_proxy_constructs_successfully() {
// Sanity-check the public ctor that page.rs uses to thread proxy
// through to the module loader. Direct (None) and proxied paths
// must both initialise the JS environment.
let _direct = ObscuraJsRuntime::with_base_url_and_proxy("https://example.com/", None);
let _proxied = ObscuraJsRuntime::with_base_url_and_proxy(
"https://example.com/",
Some("http://proxy.test:8080".to_string()),
);
}
// ── Issue #45 (Playwright actionability) regression tests ────────────────
// Kept at the end of the module so they don't share textual context with
// unrelated test additions in other branches (avoids spurious merge
// conflicts when both this branch and an unrelated bootstrap.js change
// add tests near the start of `mod tests`).
/// Playwright >= 1.25 calls `element.checkVisibility(...)` before every
/// input event. If the method isn't defined Playwright retries until its
/// action timeout fires. Without a layout engine we can't compute it
/// properly, so the stub always returns true — still strictly better
/// than the undefined path.
#[test]
fn element_check_visibility_is_callable() {
let mut rt = setup_runtime(r#"<div id="x">x</div>"#);
let result = rt
.evaluate("document.getElementById('x').checkVisibility({checkOpacity: true})")
.unwrap();
assert_eq!(result, serde_json::json!(true));
let typeof_method = rt
.evaluate("typeof document.getElementById('x').checkVisibility")
.unwrap();
assert_eq!(typeof_method, serde_json::json!("function"));
}
/// Playwright's `getByRole` / `getByLabel` locators resolve via ARIA
/// reflection properties. Without the getters those locators always
/// fail. Reflect the underlying aria-* attributes.
#[test]
fn element_aria_reflection_properties_read_aria_attrs() {
let mut rt = setup_runtime(
r#"<button id="b" role="tab" aria-label="Settings" aria-selected="true">x</button>"#,
);
let result = rt
.evaluate(
r#"
const el = document.getElementById('b');
return [el.role, el.ariaLabel, el.ariaSelected];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["tab", "Settings", "true"]));
}
/// Setting an ARIA reflection property must write through to the
/// underlying attribute so frameworks that toggle state via
/// `el.ariaExpanded = 'true'` actually update the DOM.
/// Regression: React 18 / mobile SPAs (e.g. goofish.com) call
/// addEventListener on navigator.connection (NetworkInformation) and
/// navigator.serviceWorker (ServiceWorkerContainer). Both are EventTargets
/// in real browsers; missing the method crashed the app bundle with
/// "addEventListener is not a function".
#[test]
fn navigator_eventtarget_stubs_expose_add_event_listener() {
let mut rt = setup_runtime("<div></div>");
let result = rt
.evaluate(
r#"
const connection = navigator.connection;
let calls = 0;
let receiverMatches = false;
function listener(event) {
calls += 1;
receiverMatches = this === connection && event.type === 'change';
}
connection.addEventListener('change', listener);
const dispatchResult = connection.dispatchEvent(new Event('change'));
connection.removeEventListener('change', listener);
connection.dispatchEvent(new Event('change'));
return [
typeof connection.addEventListener,
typeof connection.removeEventListener,
typeof connection.dispatchEvent,
typeof navigator.serviceWorker.addEventListener,
dispatchResult,
calls,
receiverMatches,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
"function", "function", "function", "function", true, 1, true
])
);
}
#[test]
fn text_codec_streams_expose_browser_shape() {
let mut rt = setup_runtime("<div></div>");
let result = rt
.evaluate(
r#"
const encoder = new TextEncoderStream();
const decoder = new TextDecoderStream();
return {
encoder: encoder.encoding,
encoderReadable: typeof encoder.readable.getReader,
encoderWritable: typeof encoder.writable.getWriter,
decoder: decoder.encoding,
decoderReadable: typeof decoder.readable.getReader,
decoderWritable: typeof decoder.writable.getWriter,
};
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!({
"encoder": "utf-8",
"encoderReadable": "function",
"encoderWritable": "function",
"decoder": "utf-8",
"decoderReadable": "function",
"decoderWritable": "function",
})
);
}
#[tokio::test(flavor = "current_thread")]
async fn text_encoder_stream_pipe_through_delivers_hydration_data() {
let mut rt = setup_runtime("<div></div>");
let result = rt
.evaluate_for_cdp(
r#"
(async () => {
let sourceController;
const source = new ReadableStream({
start(controller) { sourceController = controller; },
});
const encoded = source.pipeThrough(new TextEncoderStream());
sourceController.enqueue('["server",{"hydrated":true}]\n');
sourceController.close();
const decoder = new TextDecoder();
let tail = "";
const lines = encoded.pipeThrough(new TransformStream({
transform(chunk, controller) {
const complete = (tail + decoder.decode(chunk, {stream: true})).split("\n");
tail = complete.pop() || "";
for (const line of complete) controller.enqueue(line);
},
flush(controller) { if (tail) controller.enqueue(tail); },
}));
const first = await lines.getReader().read();
return JSON.parse(first.value);
})()
"#,
true,
true,
)
.await
.unwrap();
assert_eq!(
result.value.unwrap(),
serde_json::json!(["server", {"hydrated": true}])
);
}
/// Regression test for #285: DDoS-Guard's challenge calls
/// `t.insertAdjacentText(...)` and dies with `TypeError: ... is not a
/// function` because `Element.prototype.insertAdjacentText` was missing.
/// Verify all four positions place a Text node (NOT parsed HTML) at the
/// right spot. Tests `insertAdjacentText` exists, is callable, and that
/// inserted content remains literal text — angle brackets must not be
/// parsed as markup, which is the whole point of the API.
#[test]
fn element_insert_adjacent_text_polyfill() {
let mut rt = setup_runtime(r#"<div id="p"><span id="t">X</span></div>"#);
let result = rt
.evaluate(
r#"
const t = document.getElementById('t');
t.insertAdjacentText('afterbegin', 'AB');
t.insertAdjacentText('beforeend', 'BE');
t.insertAdjacentText('beforebegin', 'BB');
t.insertAdjacentText('afterend', 'AE');
t.insertAdjacentText('beforeend', '<b>raw</b>');
return [
typeof Element.prototype.insertAdjacentText,
document.getElementById('p').textContent,
t.getElementsByTagName('b').length,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!(["function", "BBABXBE<b>raw</b>AE", 0])
);
}
/// Regression test for #285: `Element.prototype.insertAdjacentElement`
/// was missing alongside `insertAdjacentText`. Verify all four positions
/// place the given element correctly and that the inserted element is
/// returned (per spec — that's the contract callers rely on for chaining).
#[test]
fn element_insert_adjacent_element_polyfill() {
let mut rt = setup_runtime(r#"<div id="p"><span id="t">X</span></div>"#);
let result = rt
.evaluate(
r#"
const t = document.getElementById('t');
const before = document.createElement('b'); before.id = 'before';
const after = document.createElement('i'); after.id = 'after';
const inside = document.createElement('em'); inside.id = 'inside';
const last = document.createElement('u'); last.id = 'last';
const r1 = t.insertAdjacentElement('beforebegin', before);
const r2 = t.insertAdjacentElement('afterend', after);
const r3 = t.insertAdjacentElement('afterbegin', inside);
const r4 = t.insertAdjacentElement('beforeend', last);
const siblings = Array.from(document.getElementById('p').children).map(c => c.id);
const inT = Array.from(t.children).map(c => c.id);
return [
typeof Element.prototype.insertAdjacentElement,
r1 === before && r2 === after && r3 === inside && r4 === last,
siblings,
inT,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
"function",
true,
["before", "t", "after"],
["inside", "last"]
])
);
}
#[test]
fn console_log_error_does_not_trigger_prepare_stack_trace() {
let mut rt = setup_runtime("<div></div>");
let result = rt.evaluate(r#"
let called = false;
const saved = Error.prepareStackTrace;
Error.prepareStackTrace = function() { called = true; return saved; };
const e = new Error("test");
console.log(e);
Error.prepareStackTrace = saved;
return called;
"#).unwrap();
assert_eq!(result, serde_json::json!(false));
}
#[test]
fn element_aria_reflection_setters_write_through() {
let mut rt = setup_runtime(r#"<div id="d"></div>"#);
let result = rt
.evaluate(
r#"
const el = document.getElementById('d');
el.role = 'menu';
el.ariaExpanded = 'true';
return [el.getAttribute('role'), el.getAttribute('aria-expanded')];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["menu", "true"]));
}
/// Framework schedulers commonly subclass EventTarget for their own
/// lifecycle events. These targets have no backing DOM node, but must
/// still deliver callbacks (including object, once, and signal listeners).
#[test]
fn standalone_event_target_delivers_framework_lifecycle_events() {
let mut rt = setup_runtime("<div></div>");
let result = rt
.evaluate(
r#"
const TypedEventTarget = class extends EventTarget {};
const target = new TypedEventTarget();
const calls = [];
const removed = () => calls.push("removed");
const controller = new AbortController();
const node = { id: "canvas-ref" };
target.addEventListener("insert", (event) => calls.push(event.node.id));
target.addEventListener("insert", { handleEvent() { calls.push("object"); } });
target.addEventListener("insert", () => calls.push("once"), { once: true });
target.addEventListener("insert", removed);
target.removeEventListener("insert", removed);
target.addEventListener("insert", () => calls.push("aborted"), {
signal: controller.signal,
});
controller.abort();
const first = new Event("insert", { cancelable: true });
first.node = node;
const firstResult = target.dispatchEvent(first);
const second = new Event("insert");
second.node = node;
const secondResult = target.dispatchEvent(second);
return [
target instanceof EventTarget,
calls,
firstResult,
secondResult,
first.target === target,
first.currentTarget === null,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true,
["canvas-ref", "object", "once", "canvas-ref", "object"],
true,
true,
true,
true
])
);
}
#[test]
fn media_text_tracks_expose_loaded_webvtt_cues() {
let mut rt = setup_runtime(
r#"<video><track id="captions" kind="captions" srclang="en" default
src="data:text/vtt,WEBVTT%0A%0A00%3A00%3A01.000%20--%3E%2000%3A00%3A03.000%0AHello"></video>"#,
);
let result = rt
.evaluate(
r#"
const element = document.getElementById("captions");
const video = document.querySelector("video");
const cue = element.track.cues[0];
const added = video.addTextTrack("metadata", "Data", "en");
cue.line = -2;
cue.size = 80;
return [
element instanceof HTMLTrackElement,
element.readyState === HTMLTrackElement.LOADED,
element.track instanceof TextTrack,
element.track.cues.length,
cue.startTime,
cue.endTime,
cue.text,
cue.line,
cue.size,
video.textTracks.length,
video.textTracks.getTrackById("captions") === element.track,
added.kind,
];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([
true, true, true, 1, 1, 3, "Hello", -2, 80, 1, true, "metadata"
])
);
}
#[test]
fn html_string_scripts_remain_inert_when_connected() {
let mut rt = setup_runtime("<html><head></head><body><div id=target></div></body></html>");
let result = rt
.evaluate(
r#"
var scriptTestSetup = true;
globalThis.__fragmentScriptRuns = 0;
const direct = document.createElement("div");
direct.innerHTML = "<script>globalThis.__fragmentScriptRuns++<\/script>";
document.body.appendChild(direct.firstChild);
const nested = document.createElement("div");
nested.innerHTML = "<section><script>globalThis.__fragmentScriptRuns++<\/script></section>";
document.body.appendChild(nested.firstChild);
const template = document.createElement("template");
template.innerHTML = "<script>globalThis.__fragmentScriptRuns++<\/script>";
document.body.appendChild(template.content.firstChild);
const nestedTemplateHolder = document.createElement("div");
nestedTemplateHolder.innerHTML =
"<template><script>globalThis.__fragmentScriptRuns++<\/script></template>";
document.body.appendChild(
nestedTemplateHolder.firstChild.content.firstChild
);
document.getElementById("target").insertAdjacentHTML(
"beforeend",
"<script>globalThis.__fragmentScriptRuns++<\/script>"
);
const parsed = new DOMParser().parseFromString(
"<body><script>globalThis.__fragmentScriptRuns++<\/script></body>",
"text/html"
);
document.body.appendChild(parsed.querySelector("script"));
let externalFetches = 0;
const originalFetchOp = Deno.core.ops.op_fetch_url;
try {
Deno.core.ops.op_fetch_url = () => {
externalFetches++;
return JSON.stringify({
status: 200,
headers: {"content-type": "text/javascript"},
body: "globalThis.__fragmentScriptRuns++",
url: "http://example.com/inert.js"
});
};
const external = document.createElement("div");
external.innerHTML = "<script src=/inert.js><\/script>";
document.head.appendChild(external.firstChild);
} finally {
Deno.core.ops.op_fetch_url = originalFetchOp;
}
return [globalThis.__fragmentScriptRuns, externalFetches];
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!([0, 0]));
}
#[test]
fn connected_insertion_prepares_dynamic_script_subtrees_once() {
let mut rt = setup_runtime("<html><head></head><body><i id=anchor></i></body></html>");
let result = rt
.evaluate(
r#"
var scriptTestSetup = true;
globalThis.__dynamicScriptRuns = [];
const detached = document.createElement("div");
const delayed = document.createElement("script");
delayed.textContent = "globalThis.__dynamicScriptRuns.push('delayed')";
detached.appendChild(delayed);
const beforeConnection = globalThis.__dynamicScriptRuns.length;
document.body.appendChild(detached);
document.head.appendChild(delayed);
const before = document.createElement("script");
before.textContent = "globalThis.__dynamicScriptRuns.push('before')";
document.body.insertBefore(before, document.getElementById("anchor"));
const replacement = document.createElement("script");
replacement.textContent = "globalThis.__dynamicScriptRuns.push('replace')";
document.body.replaceChild(replacement, document.getElementById("anchor"));
const subtree = document.createElement("section");
const nested = document.createElement("script");
nested.textContent = "globalThis.__dynamicScriptRuns.push('nested')";
subtree.appendChild(nested);
document.body.appendChild(subtree);
return [beforeConnection, globalThis.__dynamicScriptRuns];
"#,
)
.unwrap();
assert_eq!(
result,
serde_json::json!([0, ["delayed", "before", "replace", "nested"]])
);
}
#[test]
fn script_clone_preserves_started_state() {
let mut rt = setup_runtime(
"<html><head></head><body><script id=parser>globalThis.__cloneScriptRuns++</script></body></html>",
);
let result = rt
.evaluate(
r#"
var scriptTestSetup = true;
globalThis.__cloneScriptRuns = 0;
const parser = document.getElementById("parser");
globalThis.__markParserScripts([parser._nid]);
document.head.appendChild(parser);
document.body.appendChild(parser.cloneNode(true));
const dynamic = document.createElement("script");
dynamic.textContent = "globalThis.__cloneScriptRuns++";
document.body.appendChild(dynamic);
document.body.appendChild(dynamic.cloneNode(true));
const holder = document.createElement("div");
holder.innerHTML = "<script>globalThis.__cloneScriptRuns++<\/script>";
document.body.appendChild(holder.firstChild.cloneNode(true));
const fragment = document.createDocumentFragment();
fragment.appendChild(dynamic.cloneNode(true));
document.body.appendChild(fragment.cloneNode(true));
return globalThis.__cloneScriptRuns;
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(1.0));
}
#[test]
fn contextual_fragment_and_document_write_keep_executable_script_policy() {
let mut rt = setup_runtime("<html><head></head><body><div id=context></div></body></html>");
let result = rt
.evaluate(
r#"
var scriptTestSetup = true;
globalThis.__executableFragmentRuns = [];
const range = document.createRange();
range.selectNode(document.getElementById("context"));
const fragment = range.createContextualFragment(
"<template><script>globalThis.__executableFragmentRuns.push('template')<\/script></template>" +
"<script>globalThis.__executableFragmentRuns.push('range')<\/script>"
);
document.body.appendChild(fragment);
document.write(
"<script>globalThis.__executableFragmentRuns.push('write')<\/script>"
);
return globalThis.__executableFragmentRuns;
"#,
)
.unwrap();
assert_eq!(result, serde_json::json!(["range", "write"]));
}
}