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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/layout-instability/visibility-hidden-layout-and-visible.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/testing/web-platform/tests/layout-instability/visibility-hidden-layout-and-visible.html b/testing/web-platform/tests/layout-instability/visibility-hidden-layout-and-visible.html
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+++ b/testing/web-platform/tests/layout-instability/visibility-hidden-layout-and-visible.html
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+<!DOCTYPE html>
+<title>Layout Instability: visibility:hidden change with layout</title>
+<link rel="help" href="https://wicg.github.io/layout-instability/" />
+<div id="target" style="position: absolute; top: 0; width: 200px; height: 200px; visibility: hidden; background: blue"></div>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/util.js"></script>
+<script>
+
+promise_test(async () => {
+ const watcher = new ScoreWatcher;
+
+ // Wait for the initial render to complete.
+ await waitForAnimationFrames(2);
+
+ // Shift target, for which no shift should be reported because it's hidden.
+ target.style.top = '200px';
+ target.style.visibility = 'visible';
+
+ await waitForAnimationFrames(2);
+ // No shift should be reported.
+ assert_equals(watcher.score, 0);
+
+ // Shift again, for which shift should be reported.
+ target.style.top = '300px';
+
+ await watcher.promise;
+ const expectedScore = computeExpectedScore(200 * (200 + 100), 100);
+ assert_equals(watcher.score, expectedScore);
+
+}, 'visibility:hidden change with layout');
+
+</script>