1 files changed, 10 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/broadcastchannel/origin.window.js b/testing/web-platform/tests/webmessaging/broadcastchannel/origin.window.js
new file mode 100644
index 0000000000..7e9d602af1
--- /dev/null
+++ b/testing/web-platform/tests/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");