d7ed412355
Automatic update from web-platform-tests Add Intersection Observer Scroll Margin Wpt Tests Spec: https://www.w3.org/TR/intersection-observer/ R=pdr, szager Bug: 1469500 Change-Id: If0543f07be4f8476a1a056a788f4a0095fd899e3 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4740913 Reviewed-by: Philip Rogers <pdr@chromium.org> Commit-Queue: Traian Captan <tcaptan@chromium.org> Cr-Commit-Position: refs/heads/main@{#1196752} -- wpt-commits: fc209fea52aa59abb0bd566f993285dbec856c19 wpt-pr: 41460
43 lines
1.3 KiB
HTML
43 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<link rel="help" href="https://www.w3.org/TR/intersection-observer/#dom-intersectionobserver-scrollmargin">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="./resources/intersection-observer-test-utils.js"></script>
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<style>
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#scroller { width: 100px; height: 100px; overflow: hidden; background-color: gray; }
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#scroller2 { width: 130px; height: 130px; overflow: hidden; }
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#spacer { width: 50px; height: 100px; }
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#target { width: 50px; height: 50px; background-color: green; }
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</style>
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<div id=scroller2>
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<div id=scroller>
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<div id=spacer></div>
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<div id=target></div>
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</div>
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</div>
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<script>
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let entries = [];
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window.onload = function() {
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runTestCycle(testIntersection, "Test scroll margin intersection");
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const observer = new IntersectionObserver(
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es => entries = entries.concat(es),
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{
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scrollMargin: "10px"
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}
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);
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observer.observe(target);
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};
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function testIntersection() {
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assert_equals(entries.length, 1, "IntersectionObserverEntryCount");
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assert_true(entries[0].isIntersecting, "isIntersecting");
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assert_approx_equals(entries[0].intersectionRatio, 0.2, 0.001, "intersectionRatio");
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}
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</script>
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