1 files changed, 6 insertions, 0 deletions
diff --git a/testing/web-platform/tests/service-workers/service-worker/resources/fetch-event-add-async-worker.js b/testing/web-platform/tests/service-workers/service-worker/resources/fetch-event-add-async-worker.js
new file mode 100644
index 0000000000..a5a44a57c9
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/resources/fetch-event-add-async-worker.js
@@ -0,0 +1,6 @@
+importScripts('/resources/testharness.js');
+
+promise_test(async () => {
+  await new Promise(handler => { step_timeout(handler, 0); });
+  self.addEventListener('fetch', () => {});
+}, 'fetch event added asynchronously does not throw');