1 files changed, 36 insertions, 0 deletions
diff --git a/tests/node_compat/test/parallel/test-worker-message-port-infinite-message-loop.js b/tests/node_compat/test/parallel/test-worker-message-port-infinite-message-loop.js
new file mode 100644
index 000000000..784f72b9b
--- /dev/null
+++ b/tests/node_compat/test/parallel/test-worker-message-port-infinite-message-loop.js
@@ -0,0 +1,36 @@
+// deno-fmt-ignore-file
+// deno-lint-ignore-file
+
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+// Taken from Node 18.12.1
+// This file is automatically generated by `tests/node_compat/runner/setup.ts`. Do not modify this file manually.
+
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+
+const { MessageChannel } = require('worker_threads');
+
+// Make sure that an infinite asynchronous .on('message')/postMessage loop
+// does not lead to a stack overflow and does not starve the event loop.
+// We schedule timeouts both from before the .on('message') handler and
+// inside of it, which both should run.
+
+const { port1, port2 } = new MessageChannel();
+let count = 0;
+port1.on('message', () => {
+  if (count === 0) {
+    setTimeout(common.mustCall(() => {
+      port1.close();
+    }), 0);
+  }
+
+  port2.postMessage(0);
+  assert(count++ < 10000, `hit ${count} loop iterations`);
+});
+
+port2.postMessage(0);
+
+// This is part of the test -- the event loop should be available and not stall
+// out due to the recursive .postMessage() calls.
+setTimeout(common.mustCall(), 0);