Bug 1774302 - Add a wpt passing VideoFrame between main and worker r=smaug

Depends on D159546 Differential Revision: https://phabricator.services.mozilla.com/D160307
2022-10-26 16:41:54 +00:00 · 2022-10-26 16:41:54 +00:00 · f122a37829
--- a/testing/web-platform/tests/webcodecs/videoFrame-serialization.crossAgentCluster.html
+++ b/testing/web-platform/tests/webcodecs/videoFrame-serialization.crossAgentCluster.html
@ -4,6 +4,11 @@
  <script src='/resources/testharness.js'></script>
  <script src='/resources/testharnessreport.js'></script>
  <script src='/common/get-host-info.sub.js'></script>
+  <script id='workerCode' type='javascript/worker'>
+    self.onmessage = (e) => {
+      postMessage(e.data);
+    };
+  </script>
 </head>
 <body>
 <script>
@ -25,6 +30,20 @@ promise_test(async () => {
  assert_false(await canSendVideoFrame(target, frame));
 }, 'Verify frames cannot be passed accross the different agent clusters');

+promise_test(async () => {
+  const blob = new Blob([document.querySelector('#workerCode').textContent], {
+    type: 'text/javascript',
+  });
+  const worker = new Worker(window.URL.createObjectURL(blob));
+  let frame = createVideoFrame(30);
+  worker.postMessage(frame);
+  const received = await new Promise(resolve => worker.onmessage = e => {
+    resolve(e.data);
+  });
+  assert_equals(received.toString(), '[object VideoFrame]');
+  assert_equals(received.timestamp, 30);
+}, 'Verify frames can be passed back and forth between main and worker');
+
 function appendIframe(src) {
  const frame = document.createElement('iframe');
  document.body.appendChild(frame);