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Steve Kobes
e427fdd2a1
Automatic update from web-platform-tests Add waitForCompositorReady to scroll-behavior-* tests. Due to paint holding, the first composited programmatic smooth scroll animation is usually not committed for 30+ rAFs, which is longer than observeScrolling() is willing to wait. Bug: 1489704 Change-Id: I4d111d0e3de6d482da0ac3a3bd711a4e119faa49 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5091809 Commit-Queue: Steve Kobes <[email protected]> Reviewed-by: Robert Flack <[email protected]> Cr-Commit-Position: refs/heads/main@{#1234174} -- wpt-commits: ae1e786b4a77e4256a6873b1fbeedf48c4437831 wpt-pr: 43531
58 lines
2.7 KiB
HTML
58 lines
2.7 KiB
HTML
<!DOCTYPE html>
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<title>Testing default value of scroll-behavior</title>
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<meta name="timeout" content="long"/>
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<link rel="author" title="Frédéric Wang" href="mailto:[email protected]">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#propdef-scroll-behavior">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#scrolling-box">
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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="/dom/events/scrolling/scroll_support.js"></script>
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<script src="support/scroll-behavior.js"></script>
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<style>
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.scrollable {
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overflow: auto;
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width: 400px;
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height: 200px;
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}
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</style>
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<div id="log">
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</div>
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<div id="overflowNode" class="scrollable">
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<div style="width: 2000px; height: 1000px; background: linear-gradient(135deg, red, green);">
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<span style="display: inline-block; width: 500px; height: 250px;"></span><span id="elementToReveal" style="display: inline-block; vertical-align: -15px; width: 10px; height: 15px; background: black;"></span>
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</div>
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</div>
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<script>
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var scrollingElement = overflowNode;
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var elementToRevealLeft = 500;
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var elementToRevealTop = 250;
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var scrollFunction = "scroll";
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promise_test(async () => {
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await waitForCompositorReady();
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}, "Make sure the page is ready for animation.");
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promise_test(() => {
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resetScroll(scrollingElement);
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assert_equals(scrollingElement.scrollLeft, 0);
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assert_equals(scrollingElement.scrollTop, 0);
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scrollNode(scrollingElement, "scroll", "instant", elementToRevealLeft, elementToRevealTop);
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assert_equals(scrollingElement.scrollLeft, elementToRevealLeft, "Should set scrollLeft immediately");
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assert_equals(scrollingElement.scrollTop, elementToRevealTop, "Should set scrollTop immediately");
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return new Promise((resolve) => { resolve(); });
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}, "Instant scrolling of an element with default scroll-behavior");
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promise_test(() => {
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resetScroll(scrollingElement);
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assert_equals(scrollingElement.scrollLeft, 0);
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assert_equals(scrollingElement.scrollTop, 0);
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scrollNode(scrollingElement, "scroll", "smooth", elementToRevealLeft, elementToRevealTop);
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assert_less_than(scrollingElement.scrollLeft, elementToRevealLeft, "Should not set scrollLeft immediately");
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assert_less_than(scrollingElement.scrollTop, elementToRevealTop, "Should not set scrollTop immediately");
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return waitForScrollEnd(scrollingElement).then(() => {
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assert_equals(scrollingElement.scrollLeft, elementToRevealLeft, "Final value of scrollLeft");
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assert_equals(scrollingElement.scrollTop, elementToRevealTop, "Final value of scrollTop");
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});
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}, "Smooth scrolling of an element with default scroll-behavior");
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</script>
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