LayoutTests/accessibility/mac/invalid-tree-root-at-iframe.html - external/github.com/WebKit/webkit - Git at Google

 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
 <html aria-label="main-page-web-area">
 <head>
 <script src="../../resources/accessibility-helper.js"></script>
 <script src="../../resources/js-test.js"></script>
 <script src="../../resources/ui-helper.js"></script>
 </head>
 <body>

 <iframe id="iframe" onload="runTest()" aria-hidden="true" srcdoc="
     <html aria-label='iframe-web-area'>
         <button>Inside iframe</button>
     </html>"
 >
 </iframe>
 <input id="checkbox" type="checkbox">

 <script>
 var output = "This test ensures the scrollview of an iframe doesn't become the root of the tree after dynamic page changes.\n\n";

 var webAreaText;
 function verifyWebAreaText() {
     output += expect("webAreaText.includes('main-page-web-area')", "true");
     output += expect("!webAreaText.includes('iframe-web-area')", "true");
 }

 var root;
 function runTest() {
     window.jsTestIsAsync = true;
     if (!window.accessibilityController)
         return;

     var gotCheckedNotification = false;
     window.accessibilityController.addNotificationListener(function (target, notification) {
         if (target && target.role.toLowerCase().includes("checkbox") && notification === "AXValueChanged")
             gotCheckedNotification = true;
     });

     root = accessibilityController.rootElement;
     touchAccessibilityTree(root);

     output += expect("root.childAtIndex(0).role.toLowerCase().includes('webarea')", "true");
     // Should include "main-page-web-area", indicating we're looking at the top-most web area for the page.
     webAreaText = platformTextAlternatives(root.childAtIndex(0));
     verifyWebAreaText();

     setTimeout(async function() {
         // Wait for page rendering to be complete in case it's not done yet.
         await UIHelper.renderingUpdate();

         // Make the object and all descendants become unignored. This causes a full-node update for this and all descendants
         // in the isolated tree. The scroll-area descendant is the particular object we're trying to target, as if we behave
         // incorrectly, when we create a node change for it in AXIsolatedTree::nodeChangeForObject, we will set it as the root.
         document.getElementById("iframe").setAttribute("aria-hidden", "false");
         // Force the iframe to lose its renderer. The bug this test was written for was caused by an iframe's scroll-area
         // not returning a parent because it had no renderer, thus causing some of our code to think it was the root.
         document.getElementById("iframe").style.display = "contents";
         // Force layout to drop the renderer right now.
         document.getElementById("checkbox").offsetHeight;
         // Wait for the render tree update to be complete.
         await UIHelper.renderingUpdate();

         // Perform an action that will cause a platform notification to be posted, which will trigger an eager flush of
         // any pending isolated tree updates (i.e. those queued up by the aria-hidden change).
         document.getElementById("checkbox").checked = true;
         // Assume that the isolated tree has been updated by the time the checked notification was disbursed to us.
         await waitFor(() => gotCheckedNotification);
         accessibilityController.removeNotificationListener();

         // Ensure the root didn't get updated to an invalid value (the iframe scroll-area).
         root = accessibilityController.rootElement;
         webAreaText = platformTextAlternatives(root.childAtIndex(0));
         verifyWebAreaText();

         debug(output);
         finishJSTest();
     }, 0);
 }
 </script>
 </body>
 </html>
	<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
	<html aria-label="main-page-web-area">
	<head>
	<script src="../../resources/accessibility-helper.js"></script>
	<script src="../../resources/js-test.js"></script>
	<script src="../../resources/ui-helper.js"></script>
	</head>
	<body>

	<iframe id="iframe" onload="runTest()" aria-hidden="true" srcdoc="
	<html aria-label='iframe-web-area'>
	<button>Inside iframe</button>
	</html>"
	>
	</iframe>
	<input id="checkbox" type="checkbox">

	<script>
	var output = "This test ensures the scrollview of an iframe doesn't become the root of the tree after dynamic page changes.\n\n";

	var webAreaText;
	function verifyWebAreaText() {
	output += expect("webAreaText.includes('main-page-web-area')", "true");
	output += expect("!webAreaText.includes('iframe-web-area')", "true");
	}

	var root;
	function runTest() {
	window.jsTestIsAsync = true;
	if (!window.accessibilityController)
	return;

	var gotCheckedNotification = false;
	window.accessibilityController.addNotificationListener(function (target, notification) {
	if (target && target.role.toLowerCase().includes("checkbox") && notification === "AXValueChanged")
	gotCheckedNotification = true;
	});

	root = accessibilityController.rootElement;
	touchAccessibilityTree(root);

	output += expect("root.childAtIndex(0).role.toLowerCase().includes('webarea')", "true");
	// Should include "main-page-web-area", indicating we're looking at the top-most web area for the page.
	webAreaText = platformTextAlternatives(root.childAtIndex(0));
	verifyWebAreaText();

	setTimeout(async function() {
	// Wait for page rendering to be complete in case it's not done yet.
	await UIHelper.renderingUpdate();

	// Make the object and all descendants become unignored. This causes a full-node update for this and all descendants
	// in the isolated tree. The scroll-area descendant is the particular object we're trying to target, as if we behave
	// incorrectly, when we create a node change for it in AXIsolatedTree::nodeChangeForObject, we will set it as the root.
	document.getElementById("iframe").setAttribute("aria-hidden", "false");
	// Force the iframe to lose its renderer. The bug this test was written for was caused by an iframe's scroll-area
	// not returning a parent because it had no renderer, thus causing some of our code to think it was the root.
	document.getElementById("iframe").style.display = "contents";
	// Force layout to drop the renderer right now.
	document.getElementById("checkbox").offsetHeight;
	// Wait for the render tree update to be complete.
	await UIHelper.renderingUpdate();

	// Perform an action that will cause a platform notification to be posted, which will trigger an eager flush of
	// any pending isolated tree updates (i.e. those queued up by the aria-hidden change).
	document.getElementById("checkbox").checked = true;
	// Assume that the isolated tree has been updated by the time the checked notification was disbursed to us.
	await waitFor(() => gotCheckedNotification);
	accessibilityController.removeNotificationListener();

	// Ensure the root didn't get updated to an invalid value (the iframe scroll-area).
	root = accessibilityController.rootElement;
	webAreaText = platformTextAlternatives(root.childAtIndex(0));
	verifyWebAreaText();

	debug(output);
	finishJSTest();
	}, 0);
	}
	</script>
	</body>
	</html>