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