1 files changed, 37 insertions, 0 deletions
diff --git a/testing/web-platform/tests/scroll-animations/css/view-timeline-axis-computed.html b/testing/web-platform/tests/scroll-animations/css/view-timeline-axis-computed.html
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index 0000000000..f4649dab04
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+++ b/testing/web-platform/tests/scroll-animations/css/view-timeline-axis-computed.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#view-timeline-axis">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/css/support/computed-testcommon.js"></script>
+</head>
+<style>
+  #outer { view-timeline-axis: block, inline; }
+  #target { view-timeline-axis: vertical; }
+</style>
+<div id=outer>
+  <div id=target></div>
+</div>
+<script>
+test_computed_value('view-timeline-axis', 'initial', 'block');
+test_computed_value('view-timeline-axis', 'inherit', 'block, inline');
+test_computed_value('view-timeline-axis', 'unset', 'block');
+test_computed_value('view-timeline-axis', 'revert', 'block');
+test_computed_value('view-timeline-axis', 'block');
+test_computed_value('view-timeline-axis', 'inline');
+test_computed_value('view-timeline-axis', 'vertical');
+test_computed_value('view-timeline-axis', 'horizontal');
+test_computed_value('view-timeline-axis', 'block, inline');
+test_computed_value('view-timeline-axis', 'inline, block');
+test_computed_value('view-timeline-axis', 'block, vertical, horizontal, inline');
+test_computed_value('view-timeline-axis', 'inline, inline, inline, inline');
+
+test(() => {
+  let style = getComputedStyle(document.getElementById('target'));
+  assert_not_equals(Array.from(style).indexOf('view-timeline-axis'), -1);
+}, 'The view-timeline-axis property shows up in CSSStyleDeclaration enumeration');
+
+test(() => {
+  let style = document.getElementById('target').style;
+  assert_not_equals(style.cssText.indexOf('view-timeline-axis'), -1);
+}, 'The view-timeline-axis property shows up in CSSStyleDeclaration.cssText');
+</script>