1 files changed, 33 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js
new file mode 100644
index 0000000000..0fa74a2070
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/shadows/2d.shadow.canvas.alpha.worker.js
@@ -0,0 +1,33 @@
+// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
+// OffscreenCanvas test in a worker:2d.shadow.canvas.alpha
+// Description:Shadows are drawn correctly for partially-transparent canvases
+// Note:
+
+importScripts("/resources/testharness.js");
+importScripts("/html/canvas/resources/canvas-tests.js");
+
+var t = async_test("Shadows are drawn correctly for partially-transparent canvases");
+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');
+
+  var canvas2 = new OffscreenCanvas(100, 50);
+  var ctx2 = canvas2.getContext('2d');
+  ctx2.fillStyle = 'rgba(255, 0, 0, 0.5)';
+  ctx2.fillRect(0, 0, 100, 50);
+
+  ctx.fillStyle = '#f00';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.shadowOffsetY = 50;
+  ctx.shadowColor = '#00f';
+  ctx.drawImage(canvas2, 0, -50);
+
+  _assertPixelApprox(canvas, 50,25, 127,0,127,255, 2);
+  t.done();
+});
+done();