1 files changed, 5 insertions, 0 deletions
diff --git a/dom/file/tests/worker_bug1742540.js b/dom/file/tests/worker_bug1742540.js
new file mode 100644
index 0000000000..c0330ccb56
--- /dev/null
+++ b/dom/file/tests/worker_bug1742540.js
@@ -0,0 +1,5 @@
+onmessage = e => {
+  let file = e.data.file;
+  let port = e.data.port;
+  port.postMessage(e.data.message);
+};