1 files changed, 82 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fs/script-tests/FileSystemBaseHandle-postMessage-BroadcastChannel.js b/testing/web-platform/tests/fs/script-tests/FileSystemBaseHandle-postMessage-BroadcastChannel.js
new file mode 100644
index 0000000000..681037db2f
--- /dev/null
+++ b/testing/web-platform/tests/fs/script-tests/FileSystemBaseHandle-postMessage-BroadcastChannel.js
@@ -0,0 +1,82 @@
+'use strict';
+
+// This script depends on the following scripts:
+//    /fs/resources/messaging-helpers.js
+//    /fs/resources/messaging-serialize-helpers.js
+//    /fs/resources/test-helpers.js
+//    /service-workers/service-worker/resources/test-helpers.sub.js
+
+// Sets up a new broadcast channel in |target|. Posts a message instructing
+// |target| to open the broadcast channel using |broadcast_channel_name|.
+async function create_broadcast_channel(
+  test, broadcast_channel_name, receiver, target, target_origin) {
+  target.postMessage(
+    { type: 'create-broadcast-channel', broadcast_channel_name },
+    { targetOrigin: target_origin });
+  const event_watcher = new EventWatcher(test, receiver, 'message');
+
+  // Wait until |target| is listening to the broad cast channel.
+  const message_event = await event_watcher.wait_for('message');
+  assert_equals(message_event.data.type, 'broadcast-channel-created',
+    'The message target must receive a "broadcast-channel-created" message ' +
+    'response.');
+}
+
+// This test is very similar to 'FileSystemBaseHandle-postMessage.js'. It
+// starts by creating three message targets for the broadcast channel:
+// an iframe, dedicated worker and a service worker. After setup, an array
+// of FileSystemHandles is sent across the broadcast channel. The test
+// expects three responses -- one from each message target.
+directory_test(async (t, root) => {
+  const broadcast_channel_name = 'file-system-file-handle-channel';
+  const broadcast_channel = new BroadcastChannel(broadcast_channel_name);
+  const broadcast_channel_event_watcher =
+    new EventWatcher(t, broadcast_channel, 'message');
+
+  const iframe = await add_iframe(t, { src: kDocumentMessageTarget });
+  await create_broadcast_channel(
+    t, broadcast_channel_name, self, iframe.contentWindow, '*');
+
+  const scope = `${kServiceWorkerMessageTarget}` +
+    '?post-message-to-broadcast-channel-with-file-handle';
+
+  const registration = await create_service_worker(
+    t, kServiceWorkerMessageTarget, scope);
+
+  await create_broadcast_channel(
+    t, broadcast_channel_name,
+    navigator.serviceWorker, registration.installing);
+
+  const dedicated_worker =
+    create_dedicated_worker(t, kDedicatedWorkerMessageTarget);
+
+  await create_broadcast_channel(
+    t, broadcast_channel_name, dedicated_worker, dedicated_worker);
+
+  const handles = await create_file_system_handles(t, root);
+
+  broadcast_channel.postMessage(
+    { type: 'receive-file-system-handles', cloned_handles: handles });
+
+  const expected_response_count = 3;
+  const responses = [];
+  for (let i = 0; i < expected_response_count; ++i) {
+    const message_event =
+      await broadcast_channel_event_watcher.wait_for('message');
+    responses.push(message_event.data);
+  }
+
+  const expected_serialized_handles = await serialize_handles(handles);
+
+  for (let i = 0; i < responses.length; ++i) {
+    assert_equals(responses[i].type, 'receive-serialized-file-system-handles',
+      'The test runner must receive a "serialized-file-system-handles" ' +
+      `message response. Actual response: ${responses[i]}`);
+
+    assert_equals_serialized_handles(
+      responses[i].serialized_handles, expected_serialized_handles);
+
+    await assert_equals_cloned_handles(responses[i].cloned_handles, handles);
+  }
+}, 'Send and receive messages using a broadcast channel in an iframe, ' +
+'dedicated worker and service worker.');
+\ No newline at end of file