Match selectors inside ShadowRoot trees

crates/obscura-js/src/ops.rs

@@ -288,6 +288,10 @@ fn op_dom_inner(state: &OpState, cmd: String, arg1: String, arg2: String) -> Str
                 .map(|ids| ids.iter().map(|id| id.index() as i32).collect()).unwrap_or_default();
             serde_json::to_string(&ids).unwrap_or("[]".into())
         }
+        "matches_selector" => {
+            let nid = NodeId::new(arg1.parse::<u32>().unwrap_or(0));
+            dom.matches_selector(nid, &arg2).unwrap_or(false).to_string()
+        }
         "node_type" => {
             let nid = arg1.parse::<u32>().unwrap_or(0);
             dom.with_node(NodeId::new(nid), |n| match &n.data {

crates/obscura-js/src/runtime.rs

@@ -1991,7 +1991,10 @@ mod tests {
                 const parsed = [
                     inside.parentNode === root,
                     inside.getRootNode() === root,
-                    root.textContent
+                    root.textContent,
+                    inside.matches("span#inside"),
+                    root.querySelector("span#inside") === inside,
+                    root.querySelectorAll("span#inside").length === 1
                 ];
 
                 const a = document.createElement("a");
@@ -2059,7 +2062,7 @@ mod tests {
                 ],
                 [true, true, true],
                 [true, true, true],
-                [true, true, "inside"],
+                [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],