1 files changed, 11 insertions, 0 deletions
diff --git a/toolkit/components/extensions/test/mochitest/file_simple_sharedworker.js b/toolkit/components/extensions/test/mochitest/file_simple_sharedworker.js
new file mode 100644
index 0000000000..e8776216f1
--- /dev/null
+++ b/toolkit/components/extensions/test/mochitest/file_simple_sharedworker.js
@@ -0,0 +1,11 @@
+"use strict";
+
+self.onconnect = async evt => {
+  const port = evt.ports[0];
+  port.onmessage = async message => {
+    await fetch(message.data);
+    self.close();
+  };
+  port.start();
+  port.postMessage("loaded");
+};