зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1557377 [wpt PR 16855] - Update LayoutShift entryType and rename "fraction" to "value"., a=testonly
Automatic update from web-platform-tests Update LayoutShift entryType and rename "fraction" to "value". Bug: 963474 Change-Id: I29cdf63d82105644ba9f4fddbf38c17ae81aabdb Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1613887 Commit-Queue: Steve Kobes <skobes@chromium.org> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org> Cr-Commit-Position: refs/heads/master@{#660234} -- wp5At-commits: 17fdc108517774279ea71f0de4fe8d68618249d3 wpt-pr: 16855 --HG-- rename : testing/web-platform/tests/layout-stability/resources/slow-image.py => testing/web-platform/tests/layout-instability/resources/slow-image.py
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@ -1,6 +1,6 @@
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<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>Layout Jank: query jank via the performance timeline</title>
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<title>Layout Instability: query layout shift value via the performance timeline</title>
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<body>
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<style>
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#myDiv { position: relative; width: 300px; height: 100px; }
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@ -16,27 +16,27 @@
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// Modify the position of the div.
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document.getElementById('myDiv').style = "top: 60px";
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function testBufferedEntry() {
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if (performance.getEntriesByType('layoutJank').length === 0) {
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if (performance.getEntriesByType('layoutShift').length === 0) {
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t.step_timeout(testBufferedEntry, 0);
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return;
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}
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const endTime = performance.now();
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assert_equals(performance.getEntriesByType('layoutJank').length, 1);
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assert_equals(performance.getEntriesByType('layoutShift').length, 1);
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assert_equals(performance.getEntries().filter(
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entry => entry.entryType === 'layoutJank').length, 1);
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const entry = performance.getEntriesByType('layoutJank')[0];
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assert_equals(entry.entryType, "layoutJank");
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entry => entry.entryType === 'layoutShift').length, 1);
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const entry = performance.getEntriesByType('layoutShift')[0];
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assert_equals(entry.entryType, "layoutShift");
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assert_equals(entry.name, "");
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assert_greater_than_equal(entry.startTime, startTime)
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assert_less_than_equal(entry.startTime, endTime)
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assert_equals(entry.duration, 0.0);
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// The layout jank fraction should be: 300 * (100 + 60) / viewport size.
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assert_equals(entry.fraction, 300 * (100 + 60) /
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// The layout shift value should be: 300 * (100 + 60) / viewport size.
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assert_equals(entry.value, 300 * (100 + 60) /
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(document.documentElement.clientWidth * document.documentElement.clientHeight));
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t.done();
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}
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t.step(testBufferedEntry);
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}, 'LayoutJank before onload is buffered into the performance timeline.');
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}, 'Layout shift before onload is buffered into the performance timeline.');
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</script>
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</body>
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@ -1,6 +1,6 @@
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<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>Layout Jank: observe jank fraction via PerformanceObserver</title>
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<title>Layout Instability: observe layout shift value via PerformanceObserver</title>
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<body>
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<style>
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#myDiv { position: relative; width: 300px; height: 100px; }
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@ -16,22 +16,22 @@
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const endTime = performance.now();
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assert_equals(entryList.getEntries().length, 1);
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const entry = entryList.getEntries()[0];
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assert_equals(entry.entryType, "layoutJank");
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assert_equals(entry.entryType, "layoutShift");
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assert_equals(entry.name, "");
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assert_greater_than_equal(entry.startTime, startTime)
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assert_less_than_equal(entry.startTime, endTime)
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assert_equals(entry.duration, 0.0);
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// The layout jank fraction should be: 300 * (100 + 60) / viewport size.
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assert_equals(entry.fraction, 300 * (100 + 60) /
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// The layout shift value should be: 300 * (100 + 60) / viewport size.
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assert_equals(entry.value, 300 * (100 + 60) /
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(document.documentElement.clientWidth * document.documentElement.clientHeight));
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})
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);
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observer.observe({entryTypes: ['layoutJank']});
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observer.observe({entryTypes: ['layoutShift']});
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window.onload = () => {
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// Modify the position of the div.
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document.getElementById('myDiv').style = "top: 60px";
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};
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}, 'LayoutJank is observable via PerformanceObserver.');
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}, 'Layout shift is observable via PerformanceObserver.');
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</script>
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</body>
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@ -1,6 +1,6 @@
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<!DOCTYPE html>
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<head>
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<title>PerformanceObserver.supportedEntryTypes contains "layoutJank"</title>
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<title>PerformanceObserver.supportedEntryTypes contains "layoutShift"</title>
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</head>
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<body>
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<script src="/resources/testharness.js"></script>
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@ -9,9 +9,9 @@
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test(() => {
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if (typeof PerformanceObserver.supportedEntryTypes === "undefined")
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assert_unreached("supportedEntryTypes is not supported.");
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assert_greater_than(PerformanceObserver.supportedEntryTypes.indexOf("layoutJank"), -1,
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"There should be an entry 'layoutJank' in PerformanceObserver.supportedEntryTypes");
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}, "supportedEntryTypes contains 'layoutJank'.");
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assert_greater_than(PerformanceObserver.supportedEntryTypes.indexOf("layoutShift"), -1,
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"There should be an entry 'layoutShift' in PerformanceObserver.supportedEntryTypes");
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}, "supportedEntryTypes contains 'layoutShift'.");
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</script>
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</body>
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</html>
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