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-rw-r--r--cli/tests/unit/broadcast_channel_test.ts27
-rw-r--r--cli/tests/workers/broadcast_channel.ts5
2 files changed, 32 insertions, 0 deletions
diff --git a/cli/tests/unit/broadcast_channel_test.ts b/cli/tests/unit/broadcast_channel_test.ts
new file mode 100644
index 000000000..cfa62c856
--- /dev/null
+++ b/cli/tests/unit/broadcast_channel_test.ts
@@ -0,0 +1,27 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+import { assertEquals } from "../../../test_util/std/testing/asserts.ts";
+import { deferred } from "../../../test_util/std/async/deferred.ts";
+
+Deno.test("broadcastchannel worker", async () => {
+ const intercom = new BroadcastChannel("intercom");
+ let count = 0;
+
+ const url = new URL("../workers/broadcast_channel.ts", import.meta.url);
+ const worker = new Worker(url.href, { type: "module", name: "worker" });
+ worker.onmessage = () => intercom.postMessage(++count);
+
+ const promise = deferred();
+
+ intercom.onmessage = function (e) {
+ assertEquals(count, e.data);
+ if (count < 42) {
+ intercom.postMessage(++count);
+ } else {
+ worker.terminate();
+ intercom.close();
+ promise.resolve();
+ }
+ };
+
+ await promise;
+});
diff --git a/cli/tests/workers/broadcast_channel.ts b/cli/tests/workers/broadcast_channel.ts
new file mode 100644
index 000000000..5076e9eb7
--- /dev/null
+++ b/cli/tests/workers/broadcast_channel.ts
@@ -0,0 +1,5 @@
+new BroadcastChannel("intercom").onmessage = function (e) {
+ this.postMessage(e.data);
+};
+
+self.postMessage("go");