1 files changed, 35 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/Channel_postMessage_target_source.htm b/testing/web-platform/tests/webmessaging/Channel_postMessage_target_source.htm
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index 000000000..4b00e68d4
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+++ b/testing/web-platform/tests/webmessaging/Channel_postMessage_target_source.htm
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title> postMessage(): target port and source port </title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id=log></div>
+<script>
+
+    var TARGET = null;
+    var SOURCE = null;
+    var description = "The postMessage() method - Let target port be the port with which source "
+                    + "port is entangled, if any.";
+
+    var t = async_test("Test Description: " + description);
+
+    var channel = new MessageChannel();
+    SOURCE = channel.port1;
+    TARGET = channel.port2;
+    TARGET.start();
+    TARGET.addEventListener("message", t.step_func(TestMessageEvent), true);
+
+    SOURCE.postMessage("ping");
+
+    function TestMessageEvent(evt)
+    {
+        assert_equals(evt.target, TARGET);
+        assert_not_equals(evt.target, SOURCE);
+        t.done();
+    }
+</script>
+</body>
+</html>