products/Sources/formale Sprachen/C/Firefox/layout/generic/test/test_bug470212.html
<
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 >
<
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 " >Mozill
a 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.
window.addEventListener("dragstart" , e => {
e.preventDefault();
e.stopPropagation();
}, { once: true });
// 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 >
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