| Index: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-MessageChannel-transfer.html
|
| diff --git a/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-MessageChannel-transfer.html b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-MessageChannel-transfer.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..6e321e012a3e457effebd91bddbebc11edaf3941
|
| --- /dev/null
|
| +++ b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-MessageChannel-transfer.html
|
| @@ -0,0 +1,39 @@
|
| +<!DOCTYPE html>
|
| +<script src="../../resources/testharness.js"></script>
|
| +<script src="../../resources/testharnessreport.js"></script>
|
| +<script>
|
| +async_test(t => {
|
| + var channel = new MessageChannel();
|
| + var canvas = document.createElement('canvas');
|
| + canvas.width = canvas.height = 10;
|
| + var offscreen = canvas.transferControlToOffscreen();
|
| + channel.port2.onmessage = function(message) {
|
| + var ctx = message.data.getContext('2d');
|
| + ctx.fillStyle = '#0f0';
|
| + ctx.fillRect(0, 0, 10, 10);
|
| + ctx.commit();
|
| + setTimeout(function() { // synchronization barrier to allow commit to propagate
|
| + var canvas2 = document.createElement('canvas');
|
| + canvas2.width = canvas2.height = 10;
|
| + var ctx2 = canvas2.getContext('2d');
|
| + ctx2.drawImage(canvas, 0, 0);
|
| + var pixel = ctx2.getImageData(0, 0, 1, 1).data;
|
| + t.step(function() {
|
| + assert_array_equals(pixel, [0, 255, 0, 255]);
|
| + });
|
| + t.done();
|
| + }, 0);
|
| + }
|
| + channel.port1.postMessage(offscreen, [offscreen]);
|
| +}, "Verify that posting an OffscreenCanvas through a MessageChannel works as intended.");
|
| +
|
| +test(function() {
|
| + var channel = new MessageChannel();
|
| + var canvas = document.createElement('canvas');
|
| + canvas.width = canvas.height = 10;
|
| + var offscreen = canvas.transferControlToOffscreen();
|
| + channel.port2.onmessage = function() {};
|
| + assert_throws("DataCloneError", function() {channel.port1.postMessage(offscreen)});
|
| +}, "Verify that cloning an OffscreenCanvas through a MessageChannel throws an exception")
|
| +
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 2572793002:
Test OffscreenCanvas transfer via MessageChannel (Closed)
