1 files changed, 34 insertions, 0 deletions
diff --git a/cli/tests/unit_node/testdata/worker_threads.mjs b/cli/tests/unit_node/testdata/worker_threads.mjs
new file mode 100644
index 000000000..03dc462f0
--- /dev/null
+++ b/cli/tests/unit_node/testdata/worker_threads.mjs
@@ -0,0 +1,34 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+import {
+  getEnvironmentData,
+  isMainThread,
+  parentPort,
+  threadId,
+  workerData,
+} from "node:worker_threads";
+import { once } from "node:events";
+
+async function message(expectedMessage) {
+  const [message] = await once(parentPort, "message");
+  if (message !== expectedMessage) {
+    console.log(`Expected the message "${expectedMessage}", but got`, message);
+    // fail test
+    parentPort.close();
+  }
+}
+
+await message("Hello, how are you my thread?");
+
+parentPort.postMessage("I'm fine!");
+
+await new Promise((resolve) => setTimeout(resolve, 100));
+
+parentPort.postMessage({
+  isMainThread,
+  threadId,
+  workerData: Array.isArray(workerData) &&
+      workerData[workerData.length - 1] instanceof MessagePort
+    ? workerData.slice(0, -1)
+    : workerData,
+  envData: [getEnvironmentData("test"), getEnvironmentData(1)],
+});