1 files changed, 16 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/infrastructure/safe-passing-of-structured-data/window-postmessage.window.js b/testing/web-platform/tests/html/infrastructure/safe-passing-of-structured-data/window-postmessage.window.js
new file mode 100644
index 0000000000..2a46d790b8
--- /dev/null
+++ b/testing/web-platform/tests/html/infrastructure/safe-passing-of-structured-data/window-postmessage.window.js
@@ -0,0 +1,16 @@
+// META: script=/common/sab.js
+// META: script=/html/webappapis/structured-clone/structured-clone-battery-of-tests.js
+// META: script=/html/webappapis/structured-clone/structured-clone-battery-of-tests-with-transferables.js
+// META: script=/html/webappapis/structured-clone/structured-clone-battery-of-tests-harness.js
+
+runStructuredCloneBatteryOfTests({
+  structuredClone(data, transfer) {
+    return new Promise(resolve => {
+      window.addEventListener('message', function f(ev) {
+        window.removeEventListener('message', f);
+        resolve(ev.data.data);
+      });
+      window.postMessage({data, transfer}, "/", transfer);
+    });
+  }
+});