1 files changed, 34 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.html b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.html
new file mode 100644
index 0000000000..8db1a42ca1
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/pixel-manipulation/2d.imageData.get.range.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.range</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.range</h1>
+<p class="desc">getImageData() returns values in the range [0, 255]</p>
+
+
+<script>
+var t = async_test("getImageData() returns values in the range [0, 255]");
+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 = '#000';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.fillStyle = '#fff';
+  ctx.fillRect(20, 10, 60, 10);
+  var imgdata1 = ctx.getImageData(10, 5, 1, 1);
+  _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0");
+  var imgdata2 = ctx.getImageData(30, 15, 1, 1);
+  _assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255");
+  t.done();
+
+});
+</script>