1 files changed, 10 insertions, 0 deletions
diff --git a/dom/messagechannel/tests/sharedWorker_messageChannel.js b/dom/messagechannel/tests/sharedWorker_messageChannel.js
new file mode 100644
index 0000000000..874860e99f
--- /dev/null
+++ b/dom/messagechannel/tests/sharedWorker_messageChannel.js
@@ -0,0 +1,10 @@
+/* eslint-env worker */
+
+onconnect = function (evt) {
+  var mc = new MessageChannel();
+
+  evt.ports[0].postMessage(42, [mc.port2]);
+  mc.port1.onmessage = function (e) {
+    mc.port1.postMessage(e.data);
+  };
+};