1 files changed, 34 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html
new file mode 100644
index 0000000000..3a97d9dc05
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.nonpremul.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.imageData.get.nonpremul</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.imageData.get.nonpremul</h1>
+<p class="desc">getImageData() returns non-premultiplied colors</p>
+
+
+<script>
+var t = async_test("getImageData() returns non-premultiplied colors");
+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 = 'rgba(255, 255, 255, 0.5)';
+  ctx.fillRect(0, 0, 100, 50);
+  var imgdata = ctx.getImageData(10, 10, 10, 10);
+  _assert(imgdata.data[0] > 200, "imgdata.data[\""+(0)+"\"] > 200");
+  _assert(imgdata.data[1] > 200, "imgdata.data[\""+(1)+"\"] > 200");
+  _assert(imgdata.data[2] > 200, "imgdata.data[\""+(2)+"\"] > 200");
+  _assert(imgdata.data[3] > 100, "imgdata.data[\""+(3)+"\"] > 100");
+  _assert(imgdata.data[3] < 200, "imgdata.data[\""+(3)+"\"] < 200");
+  t.done();
+
+});
+</script>