2015-11-05 11:44:07 +03:00
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<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=978833
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-->
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<head>
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<title>Test for Bug 978833</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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<style id="style">
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@keyframes a {
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from, to {
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/* a non-inherited property, so it's cached in the rule tree */
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margin-left: 50px;
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}
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}
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.alwaysa {
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animation: a linear 1s infinite;
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}
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</style>
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</head>
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<body>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=978833">Mozilla Bug 978833</a>
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<p id="display"></p>
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<pre id="test">
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<script type="application/javascript">
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var p = document.getElementById("display");
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var cs = getComputedStyle(p, "");
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var style = document.getElementById("style").sheet;
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/** Test for Bug 978833 **/
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function test_bug978833() {
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var kfs = style.cssRules[0];
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var kf = kfs.cssRules[0];
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is(kf.style.marginLeft, "50px", "we found the right keyframe rule");
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p.classList.add("alwaysa");
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is(cs.marginLeft, "50px", "p margin-left should be 50px");
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// Temporarily remove the animation style, since we resolve keyframes
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// on top of current animation styles (although maybe we shouldn't),
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// so we need to remove those styles to hit the rule tree cache.
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p.classList.remove("alwaysa");
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is(cs.marginLeft, "0px", "p margin-left should be 0px without animation");
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p.classList.add("alwaysa");
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kf.style.marginLeft = "100px";
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2015-11-05 11:44:10 +03:00
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is(cs.marginLeft, "100px", "p margin-left should be 100px after change");
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2015-11-05 11:44:07 +03:00
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// Try the same thing a second time, just to make sure it works again.
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p.classList.remove("alwaysa");
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is(cs.marginLeft, "0px", "p margin-left should be 0px without animation");
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p.classList.add("alwaysa");
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kf.style.marginLeft = "150px";
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2015-11-05 11:44:10 +03:00
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is(cs.marginLeft, "150px", "p margin-left should be 150px after second change");
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2015-11-05 11:44:07 +03:00
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p.style.animation = "";
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}
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test_bug978833();
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</script>
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</pre>
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</body>
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</html>
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