1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-paint-api/valid-image-before-load.https.html b/testing/web-platform/tests/css/css-paint-api/valid-image-before-load.https.html
new file mode 100644
index 0000000000..b58dfa114e
--- /dev/null
+++ b/testing/web-platform/tests/css/css-paint-api/valid-image-before-load.https.html
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<link rel="help" href="https://drafts.css-houdini.org/css-paint-api/">
+<link rel="match" href="valid-image-before-load-ref.html">
+<style>
+    #output {
+        width: 100px;
+        height: 100px;
+        background-color: red;
+    }
+</style>
+<script src="/common/reftest-wait.js"></script>
+<body>
+<div id="output"></div>
+
+<script id="code" type="text/worklet">
+registerPaint('green', class {
+    paint(ctx, geom) {
+        ctx.fillStyle = 'green';
+        ctx.fillRect(0, 0, geom.width, geom.height);
+    }
+});
+</script>
+
+<script>
+var el = document.getElementById('output');
+el.style.backgroundImage = 'paint(green)';
+
+var blob = new Blob([document.getElementById('code').textContent],
+                    {type: 'text/javascript'});
+var frame_cnt = 0;
+CSS.paintWorklet.addModule(URL.createObjectURL(blob)).then(function() {
+    requestAnimationFrame(function() {
+        takeScreenshot(frame_cnt);
+    });
+});
+</script>
+</body>
+</html>