1 files changed, 39 insertions, 0 deletions
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html
new file mode 100644
index 000000000..204130154
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html
@@ -0,0 +1,39 @@
+<!--
+onmessage = function(e) {
+  function processPixels(imagedata) {
+    var pixeldata = imagedata.data;
+    for (var i = 0; i < pixeldata.length; i = i+4) {
+      pixeldata[i] = 128;
+    }
+    postMessage(imagedata);
+  }
+  processPixels(e.data[0]);
+}
+
+/*
+-->
+<!doctype html>
+<title>posting an imagedata (from a cloned canvas) in an array</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('#');
+  var canvas = document.createElement('canvas');
+  var clone = canvas.cloneNode(true);
+  var ctx = clone.getContext('2d');
+  var imagedata = ctx.getImageData(0, 0, 300, 150);
+  worker.postMessage([imagedata]);
+  worker.onmessage = this.step_func(function(e) {
+    var pixeldata = e.data.data;
+    for (var i = 0; i < pixeldata.length; i++) {
+      assert_equals(pixeldata[i], (i % 4 == 0) ? 128 : 0);
+    }
+    this.done();
+  });
+});
+</script>
+<!--
+*/
+//-->
+\ No newline at end of file