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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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This commit is contained in:
Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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77
dom/plugins/test/crashtests/598862.html Normal file
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<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
<script>
var unusedScreenX;
function XSync() {
unusedScreenX = window.screenX;
}
function finish() {
document.documentElement.removeAttribute("class");
}
function cleanup() {
try {
document.getElementById("plugin").crash();
} catch (dontcare) {
}
window.setTimeout(finish, 100);
}
function scrollOfDeath() {
// Add a listener for the MozAfterPaint after the scrollTo below.
// If we don't crash during the scroll, we'll get the
// MozAfterPaint.
window.addEventListener("MozAfterPaint", cleanup, false);
window.scrollTo(0, 50);
}
//
// The sequence of events we expect is
//
// load (including initial paints of plugin that are cached)
// destroy X resources
// [X server has time to observe resource destruction]
// scrollTo
// [repaint using cached plugin surface: BOOM if buggy]
// MozAfterPaint
// cleanup
//
// However, this test is fundamentally nondeterministic. There are
// two main "failure" modes
// (1) X server doesn't have time to observer resource destruction
// before paint-after-scroll
// (2) plugin's crash notification arrives before
// paint-after-scroll
// Both result in spurious passes.
//
// This test is anal about cleanup because it must be pretty sure that
// the plugin subprocess is gone before starting the next test. We
// double-check that the plugin is gone by the time we're done by
// trying to crash it again, after we expect it to have crashed already.
//
function runTest() {
// Have the plugin throw away its X resources, one of which is
// probably a drawable to which we hold a reference
document.getElementById("plugin").destroySharedGfxStuff();
// Do something that's (hopefully) equivalent to an XSync() to allow
// the resource destruction to propagate to the server
XSync();
// Set up a scroll to happen soon
window.setTimeout(scrollOfDeath, 100);
}
window.addEventListener("MozReftestInvalidate", runTest, false);
</script>
</head>
<body style="width: 400px; height: 10000px;">
<embed id="plugin" type="application/x-test"
style="position:absolute;
top:100px; left:50px; width:200px; height:200px;">
</embed>
</body>
</html>