зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
1.6 KiB
HTML
64 строки
1.6 KiB
HTML
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Test for Bug 1399603</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>
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1399603">Mozilla Bug 1399603</a>
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<p id="display"></p>
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<div id="content">
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<div id="root">
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<div id="target"></div>
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</div>
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</div>
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<pre id="test">
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<script type="application/javascript">
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function waitForNotification(f) {
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requestAnimationFrame(function() {
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setTimeout(function() { setTimeout(f); });
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});
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}
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function forceGC() {
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SpecialPowers.gc();
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SpecialPowers.forceShrinkingGC();
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SpecialPowers.forceCC();
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SpecialPowers.gc();
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SpecialPowers.forceShrinkingGC();
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SpecialPowers.forceCC();
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}
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let content = document.getElementById('content');
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let root = document.getElementById('root');
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let target = document.getElementById('target');
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let entries = [];
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let observer = new IntersectionObserver(function(changes) {
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entries = entries.concat(changes);
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}, { root: root });
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observer.observe(target);
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waitForNotification(function () {
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is(entries.length, 1, "Initial notification.");
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root.removeChild(target);
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content.removeChild(root);
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root = null;
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forceGC();
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waitForNotification(function () {
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is(entries.length, 1, "No new notifications.");
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SimpleTest.finish();
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});
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});
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SimpleTest.waitForExplicitFinish();
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</script>
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</pre>
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<div id="log">
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</div>
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</body>
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</html>
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