<html>
<script src="../resources/js-test.js"></script>
<script src="../resources/accessibility-helper.js"></script>
<body>

<p id="before">Before</p>

<iframe id="iframe" src="data:text/html,<body><button>Click me</button></body>"></iframe>

<p id="after">After</p>

<p>End of test</p>

<p id="description"></p>
<div id="console"></div>
<script>
    if (window.testRunner)
        testRunner.waitUntilDone();

    function runTest()
    {
        description("This tests that deleting an iframe doesn't cause the accessibility cache to be destroyed and recreated.");

        if (window.accessibilityController) {
            window.before = accessibilityController.accessibleElementById('before');
            window.iframe = accessibilityController.accessibleElementById('iframe');
            window.after = accessibilityController.accessibleElementById('after');
            window.root = before.parentElement();

            window.frameBody = iframe.childAtIndex(0);
            window.frameBodyRole = frameBody.role;
            window.frameGroup = frameBody.childAtIndex(0);
            window.frameGroupRole = frameGroup.role;
            window.frameButton = frameGroup.childAtIndex(0);
            window.frameButtonRole = frameButton.role;

            document.getElementById("console").innerText += "\nBefore:\n";
            buildAccessibilityTree(root, 0, 1);

            // Remove the iframe.
            document.body.removeChild(document.getElementById("iframe"));

            // Force layout now so that the childAtIndex calls below
            // reflect the new render tree.
            document.body.offsetTop;

            window.newBefore = accessibilityController.accessibleElementById('before');
            window.newAfter = accessibilityController.accessibleElementById('after');
            window.newRoot = newBefore.parentElement();

            document.getElementById("console").innerText += "\nAfter:\n";
            buildAccessibilityTree(newRoot, 0, 1);
            document.getElementById("console").innerText += "\n";

            // Make sure that the accessibility objects from the iframe's nodes
            // are now invalid by checking that their role is changed - this
            // is because they've been deleted.
            shouldBeFalse("frameBodyRole == frameBody.role");
            shouldBeFalse("frameGroupRole == frameGroup.role");
            shouldBeFalse("frameButtonRole == frameButton.role");

            // Make sure that the other nodes are unchanged.
            shouldBeTrue("before.isEqual(newBefore)");
            shouldBeTrue("after.isEqual(newAfter)");
        }

        debug('<br /><span class="pass">TEST COMPLETE</span>');
        if (window.testRunner)
            testRunner.notifyDone();
    }

    window.addEventListener('load', function() {
        setTimeout(runTest, 10);
    }, false);
</script>
</body>
</html>