1 files changed, 29 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-paint-api/registered-property-value-006.https.html b/testing/web-platform/tests/css/css-paint-api/registered-property-value-006.https.html
new file mode 100644
index 0000000000..7176b67d4b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-paint-api/registered-property-value-006.https.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>Values of &lt;custom-ident&gt;-properties reach worklet</title>
+<link rel="help" href="https://drafts.css-houdini.org/css-paint-api/">
+<link rel="match" href="parse-input-arguments-ref.html">
+<script src="/common/reftest-wait.js"></script>
+<script src="/common/worklet-reftest.js"></script>
+<script src="./resources/utils.js"></script>
+<body>
+<div id="target"></div>
+<script>
+    try {
+      CSS.registerProperty({
+        name: '--prop',
+        syntax: '<custom-ident>',
+        initialValue: 'none',
+        inherits: false
+      });
+
+      target.style.setProperty('--prop', 'foo');
+
+      expectWorkletValue(target, '--prop', '[CSSKeywordValue foo]');
+    } catch(e) {
+      document.body.textContent = e;
+      takeScreenshot();
+    }
+</script>
+</body>
+</html>