test_bug470212.html

Enable keyboard shortcuts

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=470212

-->

<head>

  <title>Test for Bug 470212 -  crash [@ nsContentUtils::ComparePoints]</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script src="/tests/SimpleTest/EventUtils.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 canvas = document.getElementById("dragSource");

    // Drag canvas element starts with a mouse down event, combine with shift

    // key, follows by two mouse move events.

    window.addEventListener("dragstart", e => {

      e.preventDefault();

      e.stopPropagation();

    }, { once: true });

    // Press on left-top corner of the canvas element.

    synthesizeMouse(canvas, 0, 0, { type: "mousedown", shiftKey: true });

    // Move to the center of this cavas element.

    synthesizeMouseAtCenter(canvas, { type: "mousemove", shiftKey: true });

    // move out of cavas's region.

    var canvasRect = canvas.getBoundingClientRect();

    synthesizeMouse(canvas, canvasRect.width / 2, canvasRect.height + 10,

                    { type: "mousemove", shiftKey: true });

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

    synthesizeMouse(canvas, canvasRect.width / 2, canvasRect.height + 10,

                    { type: "mouseup", shiftKey: true });

    SimpleTest.finish();

  }, 0);

SimpleTest.waitForExplicitFinish();

addLoadEvent(doShiftDrag);

</script>

</pre>

</body>

</html>