3 files changed, 19 insertions, 0 deletions
diff --git a/cli/tests/subdir/worker_types.ts b/cli/tests/subdir/worker_types.ts
new file mode 100644
index 000000000..7a651e35a
--- /dev/null
+++ b/cli/tests/subdir/worker_types.ts
@@ -0,0 +1,4 @@
+// eslint-disable-next-line require-await
+self.onmessage = async (_msg: MessageEvent) => {
+  self.postMessage("hello");
+};
diff --git a/cli/tests/unit/unit_tests.ts b/cli/tests/unit/unit_tests.ts
index e97c485a8..f545e55fa 100644
--- a/cli/tests/unit/unit_tests.ts
+++ b/cli/tests/unit/unit_tests.ts
@@ -74,6 +74,7 @@ import "./umask_test.ts";
 import "./url_test.ts";
 import "./url_search_params_test.ts";
 import "./utime_test.ts";
+import "./worker_types.ts";
 import "./write_file_test.ts";
 import "./write_text_file_test.ts";
 import "./performance_test.ts";
diff --git a/cli/tests/unit/worker_types.ts b/cli/tests/unit/worker_types.ts
new file mode 100644
index 000000000..e8bc7eb78
--- /dev/null
+++ b/cli/tests/unit/worker_types.ts
@@ -0,0 +1,14 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { assert, unitTest } from "./test_util.ts";
+
+unitTest(
+  { perms: { read: true } },
+  function utimeSyncFileSuccess() {
+    const w = new Worker(
+      new URL("../subdir/worker_types.ts", import.meta.url).href,
+      { type: "module" },
+    );
+    assert(w);
+    w.terminate();
+  },
+);