<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../resources/js-test.js"></script>
</head>
<body id="body" onload="runTest()">

<div id="content1">
<iframe src="data:text/html,<body><div>hello</div>"></iframe>
</div>

<div role="group" id="console"></div>

<script>

    description("This tests that comparing text markers that have no common tree scope won't crash");

    jsTestIsAsync = true;

    function runTest() {

        // Get a text marker inside the frame we will remove.
        var text1 = accessibilityController.accessibleElementById("content1").childAtIndex(0).childAtIndex(0).childAtIndex(0).childAtIndex(0);
        var range1 = text1.textMarkerRangeForElement(text1);
        marker1 = text1.startTextMarkerForTextMarkerRange(range1);

        // Get a marker for the main frame.
        var text2 = accessibilityController.rootElement.childAtIndex(0).childAtIndex(0);
        var range2 = text2.textMarkerRangeForElement(text2);
        marker2 = text2.startTextMarkerForTextMarkerRange(range2);

        // Remove the child frame that we have a reference to the text marker from.
        var content1 = document.getElementById("content1").childNodes[0];
        content1.parentNode.removeChild(content1);

        // Ask for the text marker range with the markers in a different tree.
        // This should NOT crash!
        var range = accessibilityController.rootElement.childAtIndex(0).textMarkerRangeForMarkers(marker1, marker2);

        finishJSTest();
    }

</script>
</body>
</html>