1 files changed, 15 insertions, 0 deletions
diff --git a/tests/specs/test/worker_large_output/main.js b/tests/specs/test/worker_large_output/main.js
new file mode 100644
index 000000000..0941e60f3
--- /dev/null
+++ b/tests/specs/test/worker_large_output/main.js
@@ -0,0 +1,15 @@
+// Regression test for workers that post large amounts of output as a test is ending. This
+// test should not deadlock, though the output is undefined.
+Deno.test(async function workerOutput() {
+  console.log("Booting worker");
+  const code =
+    "self.postMessage(0); console.log(`hello from worker\n`.repeat(60000));";
+  const worker = new Worker(URL.createObjectURL(new Blob([code])), {
+    type: "module",
+  });
+  await new Promise((r) =>
+    worker.addEventListener("message", () => {
+      r();
+    })
+  );
+});