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diff --git a/testing/web-platform/tests/animation-worklet/worklet-animation-cancel.https.html b/testing/web-platform/tests/animation-worklet/worklet-animation-cancel.https.html
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index 0000000000..3b664ecddb
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+++ b/testing/web-platform/tests/animation-worklet/worklet-animation-cancel.https.html
@@ -0,0 +1,45 @@
+<html class="reftest-wait">
+<title>Canceling a playing WorkletAnimation should remove the effect</title>
+<link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
+<meta name="assert" content="Canceling a playing animation should remove the effect">
+<link rel="match" href="references/not-translated-box-ref.html">
+
+<script src="/web-animations/testcommon.js"></script>
+<script src="/common/reftest-wait.js"></script>
+<script src="common.js"></script>
+
+<style>
+  #box {
+    width: 100px;
+    height: 100px;
+    background-color: green;
+  }
+</style>
+
+<div id="box"></div>
+
+<script>
+  registerConstantLocalTimeAnimator(500).then(_ => {
+    const box = document.getElementById('box');
+    const effect = new KeyframeEffect(box,
+      [
+        {transform: 'translateY(0)'},
+        {transform: 'translateY(200px)'}
+      ], {
+        duration: 1000,
+        iterations: Infinity
+      }
+    );
+
+    const animation = new WorkletAnimation('constant_time', effect);
+    animation.play();
+
+    waitForAsyncAnimationFrames(1).then(_ => {
+      // Canceling a playing animation should remove the effect.
+      animation.cancel();
+      waitForAsyncAnimationFrames(1).then(_ => {
+        takeScreenshot();
+      });
+    });
+  });
+</script>