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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/css/css-cascade/revert-val-009.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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@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<title>CSS Cascade: 'revert' in implicit keyframes</title>
+<link rel="help" href="https://drafts.csswg.org/css-cascade/#default">
+<link rel="help" href="https://crbug.com/1065387">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1 id=h1></h1>
+<h1 id=ref></h1>
+<script>
+ test(function() {
+ let expected_lower = parseInt(getComputedStyle(ref).marginTop);
+ let expected_upper = expected_lower * 2;
+ h1.style = `margin-top: ${expected_lower * 1000}px; margin-top: revert;`;
+
+ h1.animate([
+ { marginTop: `${expected_upper}px` },
+ ], {
+ duration: 1000,
+ delay: -500,
+ }).pause();
+
+ let actual = parseInt(getComputedStyle(h1).marginTop);
+
+ // This test assumes that the UA style sheet sets a non-0px value on
+ // <h1> elements:
+ assert_not_equals(expected_lower, 0);
+ assert_not_equals(expected_upper, 0);
+ assert_between_exclusive(actual, expected_lower, expected_upper);
+ }, 'The revert keyword works in implicit keyframes');
+</script>