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20474e5ba7
We are white-listing the existing set of tests that use setTimeout like this. Hopefully these tests will be investigated and fixed in the future, so that we can narrow down the white-list. This check is only turned on for mochitest-plain for now.
81 lines
2.7 KiB
HTML
81 lines
2.7 KiB
HTML
<html xmlns="http://www.w3.org/1999/xhtml">
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=628888
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-->
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<head>
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<title>Test for Bug 628888 - Animations in external document sometimes don't run</title>
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<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body style="margin:0px">
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=628888">Mozilla Bug 628888</a>
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<p id="display"></p>
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<div id="content" style="background: red; width: 50px; height: 50px"/>
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<pre id="test">
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<script type="application/javascript">
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<![CDATA[
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/* Test for Bug 628888 - Animations in external document sometimes don't run
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*
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* This bug concerns a condition where an external document is loaded after the
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* page show event is dispatched, leaving the external document paused.
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*
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* To reproduce the bug we attach an external document with animation after the
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* page show event has fired.
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*
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* However, it is difficult to test if the animation is playing or not since we
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* don't receive events from animations running in an external document.
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*
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* Our approach is to simply render the result to a canvas (which requires
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* elevated privileges and that is why we are using a MochiTest rather
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* than a reftest) and poll one of the pixels to see if it changes colour.
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*
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* This should mean the test succeeds quickly but fails slowly.
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*/
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const POLL_INTERVAL = 100; // ms
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const POLL_TIMEOUT = 10000; // ms
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var accumulatedWaitTime = 0;
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function pageShow()
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{
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var content = document.getElementById("content");
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content.style.filter = "url(smilExtDoc_helper.svg#filter)";
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window.setTimeout(checkResult, 0);
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}
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function checkResult()
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{
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var content = document.getElementById("content");
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var bbox = content.getBoundingClientRect();
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var canvas = SpecialPowers.snapshotRect(window, bbox);
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var ctx = canvas.getContext("2d");
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var imgd = ctx.getImageData(bbox.width/2, bbox.height/2, 1, 1);
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var isGreen = (imgd.data[0] == 0) &&
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(imgd.data[1] == 255) &&
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(imgd.data[2] == 0);
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if (isGreen) {
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ok(true, "Filter is animated as expected");
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} else if (accumulatedWaitTime >= POLL_TIMEOUT) {
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ok(false, "No animation detected after waiting " + POLL_TIMEOUT + "ms");
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} else {
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accumulatedWaitTime += POLL_INTERVAL;
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window.setTimeout(checkResult, POLL_INTERVAL);
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return;
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}
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// Hide our content since mochitests normally try to be visually "quiet"
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content.style.display = 'none';
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SimpleTest.finish();
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}
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window.addEventListener('pageshow', pageShow, false);
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SimpleTest.waitForExplicitFinish();
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SimpleTest.requestFlakyTimeout("untriaged");
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]]>
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</script>
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</pre>
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</body>
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</html>
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