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<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=470212
-->
<head>
  <title>Test for Bug 470212 -  crash [@ nsContentUtils::ComparePoints]</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=470212">Mozilla Bug 470212</a>
<div style="width: 200px;">
<ca>
<canvas style="border: 1px solid black;" id="dragSource"></canvas>
</ca>
</div>

<pre id="test">
<script>
function doShiftDrag(){
  setTimeout(function() {
    var wu = SpecialPowers.DOMWindowUtils;
    var canvas = document.getElementById("dragSource");
    var canvasRect = canvas.getBoundingClientRect();

    // Drag canvas element starts with a mouse down event, combine with shift
    // key, follows by two mouse move events.

    // Press on left-top corner of the canvas element.
    wu.sendMouseEvent('mousedown',  canvasRect.left, canvasRect.top, 0, 1, 4);
    // Move to the center of this cavas element.
    wu.sendMouseEvent('mousemove',  canvasRect.left + (canvasRect.width / 2),
                      canvasRect.top + (canvasRect.height / 2), 0, 0, 4);
    // move out of cavas's region.
    wu.sendMouseEvent('mousemove',  canvasRect.left + (canvasRect.width / 2),
                      canvasRect.bottom + 10, 0, 0, 4);

    is(window.getSelection().rangeCount, 0, "rangeCount should be 0");

    wu.sendMouseEvent('mouseup', canvasRect.left + (canvasRect.width / 2),
                      canvasRect.bottom + 10, 0, 0, 4);

    SimpleTest.finish();
  }, 0);
}

SimpleTest.waitForExplicitFinish();
addLoadEvent(doShiftDrag);
</script>

</pre>
</body>
</html>