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+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>Selectors-API Level 2 Test Suite: HTML with Selectors Level 3</title>
+<!-- Selectors API Test Suite Version 3 -->
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/dom/nodes/selectors.js"></script>
+<script src="/dom/nodes/ParentNode-querySelector-All.js"></script>
+<script src="Element-matches.js"></script>
+<style>iframe { visibility: hidden; position: absolute; }</style>
+
+<div id="log">This test requires JavaScript.</div>
+
+<script>
+async_test(function() {
+  var frame = document.createElement("iframe");
+  frame.onload = this.step_func_done(init);
+  frame.src = "/dom/nodes/ParentNode-querySelector-All-content.html#target";
+  document.body.appendChild(frame);
+});
+
+function init(e) {
+  /*
+   * This test suite tests Selectors API methods in 4 different contexts:
+   * 1. Document node
+   * 2. In-document Element node
+   * 3. Detached Element node (an element with no parent, not in the document)
+   * 4. Document Fragment node
+   *
+   * For each context, the following tests are run:
+   *
+   * The interface check tests ensure that each type of node exposes the Selectors API methods.
+   *
+   * The matches() tests are run
+   * All the selectors tested for both the valid and invalid selector tests are found in selectors.js.
+   * See comments in that file for documentation of the format used.
+   *
+   * The level2-lib.js file contains all the common test functions for running each of the aforementioned tests
+   */
+
+  var docType  = "html"; // Only run tests suitable for HTML
+
+  // Prepare the nodes for testing
+  var doc = e.target.contentDocument;                 // Document Node tests
+
+  var element = doc.getElementById("root");   // In-document Element Node tests
+
+  //Setup the namespace tests
+  setupSpecialElements(doc, element);
+
+  var outOfScope = element.cloneNode(true);   // Append this to the body before running the in-document
+                                               // Element tests, but after running the Document tests. This
+                                               // tests that no elements that are not descendants of element
+                                               // are selected.
+
+  traverse(outOfScope, function(elem) {        // Annotate each element as being a clone; used for verifying
+    elem.setAttribute("data-clone", "");     // that none of these elements ever match.
+  });
+
+
+  var detached = element.cloneNode(true);     // Detached Element Node tests
+
+  var fragment = doc.createDocumentFragment(); // Fragment Node tests
+  fragment.appendChild(element.cloneNode(true));
+
+  // Setup Tests
+  interfaceCheckMatches("Document", doc);
+  interfaceCheckMatches("Detached Element", detached);
+  interfaceCheckMatches("Fragment", fragment);
+  interfaceCheckMatches("In-document Element", element);
+
+  runSpecialMatchesTests("DIV Element", element);
+  runSpecialMatchesTests("NULL Element", document.createElement("null"));
+  runSpecialMatchesTests("UNDEFINED Element", document.createElement("undefined"));
+
+  runInvalidSelectorTestMatches("Document", doc, invalidSelectors);
+  runInvalidSelectorTestMatches("Detached Element", detached, invalidSelectors);
+  runInvalidSelectorTestMatches("Fragment", fragment, invalidSelectors);
+  runInvalidSelectorTestMatches("In-document Element", element, invalidSelectors);
+
+  runMatchesTest("In-document", doc, validSelectors, "html");
+  runMatchesTest("Detached", detached, validSelectors, "html");
+  runMatchesTest("Fragment", fragment, validSelectors, "html");
+
+  runMatchesTest("In-document", doc, scopedSelectors, "html");
+}
+</script>