1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html
new file mode 100644
index 0000000000..996bce718a
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.image.transparent.2.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.shadow.image.transparent.2</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.shadow.image.transparent.2</h1>
+<p class="desc">Shadows are not drawn for transparent parts of images</p>
+
+
+<script>
+var t = async_test("Shadows are not drawn for transparent parts of images");
+var t_pass = t.done.bind(t);
+var t_fail = t.step_func(function(reason) {
+    throw reason;
+});
+t.step(function() {
+
+var canvas = new OffscreenCanvas(100, 50);
+var ctx = canvas.getContext('2d');
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 50, 50);
+ctx.fillStyle = '#f00';
+ctx.fillRect(50, 0, 50, 50);
+ctx.shadowOffsetY = 50;
+ctx.shadowColor = '#0f0';
+var promise = new Promise(function(resolve, reject) {
+    var xhr = new XMLHttpRequest();
+    xhr.open("GET", '/images/redtransparent.png');
+    xhr.responseType = 'blob';
+    xhr.send();
+    xhr.onload = function() {
+        resolve(xhr.response);
+    };
+});
+promise.then(function(response) {
+    createImageBitmap(response).then(bitmap => {
+        ctx.drawImage(bitmap, 50, -50);
+        ctx.shadowColor = '#f00';
+        ctx.drawImage(bitmap, -50, -50);
+        _assertPixel(canvas, 25,25, 0,255,0,255);
+        _assertPixel(canvas, 50,25, 0,255,0,255);
+        _assertPixel(canvas, 75,25, 0,255,0,255);
+    }, t_fail);
+}).then(t_pass, t_fail);
+
+});
+</script>