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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-transitions/starting-style-rule-none.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/css/css-transitions/starting-style-rule-none.html b/testing/web-platform/tests/css/css-transitions/starting-style-rule-none.html
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+++ b/testing/web-platform/tests/css/css-transitions/starting-style-rule-none.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<title>CSS Transitions Test: No transition if @starting-style display value is none</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/#defining-before-change-style-the-starting-style-rule">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/css-transitions/support/helper.js"></script>
+<div id="target"></div>
+<style>
+ #target {
+ transition-property: background-color;
+ transition-duration: 100s;
+ transition-timing-function: steps(2, start);
+ background-color: green;
+ }
+ @starting-style {
+ #target {
+ display: none;
+ background-color: red;
+ }
+ }
+</style>
+<script>
+ setup(() => {
+ assert_true(supportsStartingStyle(), "Prerequisite: @starting-style parses");
+ });
+
+ promise_test(async t => {
+ await waitForAnimationFrames(2);
+ assert_equals(getComputedStyle(target).backgroundColor, "rgb(0, 128, 0)",
+ "No transition of background-color when @starting-style display is 'none'");
+ }, "@starting-style with display:none");
+</script>