1 files changed, 9 insertions, 0 deletions
diff --git a/browser/components/originattributes/test/browser/file_sharedworker.js b/browser/components/originattributes/test/browser/file_sharedworker.js
new file mode 100644
index 0000000000..ecf0d37a0f
--- /dev/null
+++ b/browser/components/originattributes/test/browser/file_sharedworker.js
@@ -0,0 +1,9 @@
+self.randomValue = Math.random();
+
+/* eslint-env worker */
+
+onconnect = function (e) {
+  let port = e.ports[0];
+  port.postMessage(self.randomValue);
+  port.start();
+};