1 files changed, 8 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/mochitest/file_simple_worker.js b/toolkit/components/extensions/test/mochitest/file_simple_worker.js
new file mode 100644
index 0000000000..9638a8e9c2
--- /dev/null
+++ b/toolkit/components/extensions/test/mochitest/file_simple_worker.js
@@ -0,0 +1,8 @@
+"use strict";
+
+self.onmessage = async message => {
+  await fetch(message.data);
+  self.close();
+};
+
+self.postMessage("loaded");