From 4c79b9eb37ad686d1c21e22edc5de1c48d6d615c Mon Sep 17 00:00:00 2001
From: Anne van Kesteren <annevk@annevk.nl>
Date: Wed, 17 May 2017 09:46:16 +0200
Subject: [PATCH] BroadcastChannel: origin of events

For https://github.com/whatwg/html/pull/2689.
---
 webmessaging/broadcastchannel/origin.window.js      | 10 ++++++++++
 webmessaging/broadcastchannel/resources/origin.html |  8 ++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 webmessaging/broadcastchannel/origin.window.js
 create mode 100644 webmessaging/broadcastchannel/resources/origin.html

diff --git a/webmessaging/broadcastchannel/origin.window.js b/webmessaging/broadcastchannel/origin.window.js
new file mode 100644
index 00000000000000..7e9d602af194b7
--- /dev/null
+++ b/webmessaging/broadcastchannel/origin.window.js
@@ -0,0 +1,10 @@
+async_test(t => {
+  const crossOriginURL = new URL("resources/origin.html", self.location.href).href.replace("://", "://天気の良い日."),
+        frame = document.createElement("iframe");
+  frame.src = crossOriginURL;
+  document.body.appendChild(frame);
+  t.add_cleanup(() => frame.remove());
+  self.onmessage = t.step_func_done(e => {
+    assert_equals(e.data, self.origin.replace("://", "://xn--n8j6ds53lwwkrqhv28a."));
+  });
+}, "Serialization of BroadcastChannel origin");
diff --git a/webmessaging/broadcastchannel/resources/origin.html b/webmessaging/broadcastchannel/resources/origin.html
new file mode 100644
index 00000000000000..f57d582bbb878c
--- /dev/null
+++ b/webmessaging/broadcastchannel/resources/origin.html
@@ -0,0 +1,8 @@
+<script>
+const bc1 = new BroadcastChannel("ladila"),
+      bc2 = new BroadcastChannel("ladila");
+bc2.onmessage = e => {
+  parent.postMessage(e.origin, "*");
+}
+bc1.postMessage("does not matter");
+</script>