1 files changed, 12 insertions, 0 deletions
diff --git a/tests/unit/ref_unref_test.ts b/tests/unit/ref_unref_test.ts
new file mode 100644
index 000000000..6f5bcf0a7
--- /dev/null
+++ b/tests/unit/ref_unref_test.ts
@@ -0,0 +1,12 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+import { assertNotEquals, execCode } from "./test_util.ts";
+
+Deno.test("[unrefOpPromise] unref'ing invalid ops does not have effects", async () => {
+  const [statusCode, _] = await execCode(`
+    Deno[Deno.internal].core.unrefOpPromise(new Promise(r => null));
+    setTimeout(() => { throw new Error() }, 10)
+  `);
+  // Invalid unrefOpPromise call doesn't affect exit condition of event loop
+  assertNotEquals(statusCode, 0);
+});