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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-animations/missing-values-first-keyframe.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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+++ b/testing/web-platform/tests/css/css-animations/missing-values-first-keyframe.html
@@ -0,0 +1,84 @@
+<!DOCTYPE html>
+<html>
+<title>Missing properties in first keyframe</title>
+<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
+<link rel="help" href="https://www.w3.org/TR/web-animations-1/#the-effect-value-of-a-keyframe-animation-effect">
+<meta name="assert"
+ content="CSS animation correctly interpolates from neutral keyframe">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/web-animations/testcommon.js"></script>
+<style type="text/css" media="screen">
+ body {
+ margin: 0;
+ }
+
+ .box {
+ position: relative;
+ width: 100px;
+ height: 100px;
+ left: 0;
+ background-color: green;
+ }
+
+ #box1 {
+ left: 200px;
+ animation: move-left 2s paused linear;
+ }
+
+ #box2 {
+ transform: translateX(200px);
+ animation: move-transform 2s paused linear;
+ }
+
+ @keyframes move-left {
+ 0% {
+ opacity: 1;
+ }
+ 25% {
+ opacity: 1;
+ }
+ 50% {
+ left: 0;
+ opacity: 1;
+ }
+ 100% {
+ left: 0;
+ opacity: 0;
+ }
+ }
+
+ @keyframes move-transform {
+ 0% {
+ opacity: 1;
+ }
+ 25% {
+ opacity: 1;
+ }
+ 50% {
+ transform: translateX(0);
+ opacity: 1;
+ }
+ 100% {
+ transform: translateX(0);
+ opacity: 0;
+ }
+ }
+</style>
+<body>
+ <div class="box" id="box1"></div>
+ <div class="box" id="box2"></div>
+</body>
+<script>
+ promise_test(async t => {
+ document.getAnimations().forEach(anim => {
+ anim.currentTime = 500;
+ });
+ assert_equals(getComputedStyle(box1).left, "100px");
+ assert_matrix_equals(
+ getComputedStyle(box2).transform,
+ 'matrix(1, 0, 0, 1, 100, 0)');
+ }, 'Missing property values in the first keyframe are correctly ' +
+ 'interpolated from a neutral keyframe value');
+</script>
+</html>