1 files changed, 44 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html
new file mode 100644
index 0000000000..f5f8c68c51
--- /dev/null
+++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.uncovered.image.destination-in.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>OffscreenCanvas test: 2d.composite.uncovered.image.destination-in</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+
+<h1>2d.composite.uncovered.image.destination-in</h1>
+<p class="desc">drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.</p>
+
+
+<script>
+var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
+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(0, 255, 255, 0.5)';
+  ctx.fillRect(0, 0, 100, 50);
+  ctx.globalCompositeOperation = 'destination-in';
+  var promise = new Promise(function(resolve, reject) {
+      var xhr = new XMLHttpRequest();
+      xhr.open("GET", '/images/yellow.png');
+      xhr.responseType = 'blob';
+      xhr.send();
+      xhr.onload = function() {
+          resolve(xhr.response);
+      };
+  });
+  promise.then(function(response) {
+      return createImageBitmap(response).then(bitmap => {
+          ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
+          _assertPixelApprox(canvas, 15,15, 0,0,0,0, 5);
+          _assertPixelApprox(canvas, 50,25, 0,0,0,0, 5);
+      });
+  }).then(t_pass, t_fail);
+
+});
+</script>