1 files changed, 15 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/without-ports/025-1.js b/testing/web-platform/tests/webmessaging/without-ports/025-1.js
new file mode 100644
index 0000000000..bd1d778d9b
--- /dev/null
+++ b/testing/web-platform/tests/webmessaging/without-ports/025-1.js
@@ -0,0 +1,15 @@
+importScripts("/resources/testharness.js");
+
+test(function() {
+  var ch = new MessageChannel();
+  assert_true(ch.port1 instanceof MessagePort,
+              "Worker MessageChannel's port not an instance of MessagePort");
+}, "Worker MessageChannel's port should be an instance of MessagePort");
+
+test(function() {
+  assert_throws_js(TypeError, function() {
+    new MessagePort()
+  }, "MessagePort is [[Callable]]");
+}, "Worker MessagePort should not be [[Callable]]");
+
+done();