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diff --git a/testing/web-platform/tests/web-animations/interfaces/Animation/id.html b/testing/web-platform/tests/web-animations/interfaces/Animation/id.html
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+++ b/testing/web-platform/tests/web-animations/interfaces/Animation/id.html
@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Animation.id</title>
+<link rel="help" href="https://drafts.csswg.org/web-animations/#dom-animation-id">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="../../testcommon.js"></script>
+<body>
+<div id="log"></div>
+<script>
+'use strict';
+
+test(t => {
+  const div = createDiv(t);
+  const animation = div.animate({}, 100 * MS_PER_SEC);
+  assert_equals(animation.id, '', 'id for Animation is initially empty');
+}, 'Animation.id initial value');
+
+test(t => {
+  const div = createDiv(t);
+  const animation = div.animate({}, 100 * MS_PER_SEC);
+  animation.id = 'anim';
+
+  assert_equals(animation.id, 'anim', 'animation.id reflects the value set');
+}, 'Animation.id setter');
+
+</script>
+</body>