52 lines
1.4 KiB
HTML
52 lines
1.4 KiB
HTML
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<!DOCTYPE html><!-- webkit-test-runner [ IntersectionObserverEnabled=true ] -->
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<html>
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<body>
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<pre id="log">This tests observing an element with an IntersectionObserver and removing the element from the document.
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The element should become eligible for GC at some point.
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</pre>
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<script src="../resources/gc.js"></script>
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<script>
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let initialNodeCount;
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function runTest()
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{
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if (!window.testRunner || !window.internals) {
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log.textContent += 'FAIL - This test requires internals';
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return;
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}
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testRunner.dumpAsText();
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testRunner.waitUntilDone();
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initialNodeCount = internals.referencingNodeCount(document);
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const intersectionObservers = [];
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for (let i = 0; i < 100; ++i)
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intersectionObservers.push(createIntersectionObserver());
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requestAnimationFrame(() => {
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setTimeout(() => {
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gc();
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log.textContent += internals.referencingNodeCount(document) < initialNodeCount + intersectionObservers.length * 0.8 ? 'PASS' : 'FAIL - Less than 20% of nodes were collected.'
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testRunner.notifyDone();
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}, 0);
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});
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}
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function createIntersectionObserver()
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{
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const element = document.createElement('div');
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const intersectionObserver = new IntersectionObserver(() => { }).observe(element);
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document.body.appendChild(element);
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setTimeout(() => {
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element.remove();
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}, 0);
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return intersectionObserver;
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}
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onload = runTest;
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</script>
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</body>
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</html>
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