gecko-dev/layout/base/tests/test_bug114649.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=114649
-->
<head>
<title>Test for Bug 114649</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body onload="run()">
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=114649">Mozilla Bug 114649</a>
<iframe id="display" style="width: 500px; height: 500px;"></iframe>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 114649 **/
var gIFrame;
var gCurrentWidth = 500;
var gGotEventsAt = [];
var gInterval;
var gFinished = false;
function run() {
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout("Simulating dragging to resize a window");
gIFrame = document.getElementById("display");
var subdoc = gIFrame.contentDocument;
subdoc.open();
subdoc.write("<body onresize='window.parent.handle_resize_event()'>");
subdoc.close();
setTimeout(do_a_resize, 50);
}
function do_a_resize()
{
// decrease the width by 10 until we hit 400, then stop
gCurrentWidth -= 10;
gIFrame.style.width = gCurrentWidth + "px";
if (gCurrentWidth > 400) {
setTimeout(do_a_resize, 50);
}
}
function handle_resize_event()
{
gGotEventsAt.push(gCurrentWidth);
if (gCurrentWidth == 400) {
check_resize_events();
}
}
function check_resize_events()
{
if (gFinished) {
// We can get here when the browser can't process the resizes and
// dispatch resize events as fast as we're doing the resizing. We can
// then end up with multiple resize events queued up after we set our
// final size. This return makes sure that in that case we avoid
// calling SimpleTest.finish() more than once.
return;
}
gFinished = true;
ok(gGotEventsAt.length >= 2, "We should get more than one event");
isnot(gGotEventsAt[0], 400, "The first event shouldn't be for the final size");
SimpleTest.finish();
}
</script>
</pre>
</body>
</html>