1 files changed, 9 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webmessaging/MessageEvent-trusted.window.js b/testing/web-platform/tests/webmessaging/MessageEvent-trusted.window.js
new file mode 100644
index 0000000000..11cf48beed
--- /dev/null
+++ b/testing/web-platform/tests/webmessaging/MessageEvent-trusted.window.js
@@ -0,0 +1,9 @@
+// META: title=MessagePort message events are trusted with window
+
+async_test(t => {
+  window.onmessage = t.step_func_done(e => {
+    assert_equals(e.isTrusted, true);
+  });
+
+  window.postMessage("ping", "*");
+}, "With window");