1 files changed, 43 insertions, 0 deletions
diff --git a/testing/web-platform/tests/service-workers/service-worker/postmessage-msgport-to-client.https.html b/testing/web-platform/tests/service-workers/service-worker/postmessage-msgport-to-client.https.html
new file mode 100644
index 0000000000..29c056080c
--- /dev/null
+++ b/testing/web-platform/tests/service-workers/service-worker/postmessage-msgport-to-client.https.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<title>Service Worker: postMessage via MessagePort to Client</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helpers.sub.js"></script>
+<script>
+promise_test(t => {
+    var script = 'resources/postmessage-msgport-to-client-worker.js';
+    var scope = 'resources/blank.html';
+    var port;
+
+    return service_worker_unregister_and_register(t, script, scope)
+      .then(registration => {
+          add_completion_callback(() => registration.unregister());
+          return wait_for_state(t, registration.installing, 'activated');
+        })
+      .then(() => with_iframe(scope))
+      .then(frame => {
+          t.add_cleanup(() => frame.remove());
+          return new Promise(resolve => {
+              var w = frame.contentWindow;
+              w.navigator.serviceWorker.onmessage = resolve;
+              w.navigator.serviceWorker.controller.postMessage('ping');
+            });
+        })
+      .then(e => {
+          port = e.ports[0];
+          port.postMessage({value: 1});
+          port.postMessage({value: 2});
+          port.postMessage({done: true});
+          return new Promise(resolve => { port.onmessage = resolve; });
+        })
+      .then(e => {
+          assert_equals(e.data.ack, 'Acking value: 1');
+          return new Promise(resolve => { port.onmessage = resolve; });
+        })
+      .then(e => {
+          assert_equals(e.data.ack, 'Acking value: 2');
+          return new Promise(resolve => { port.onmessage = resolve; });
+        })
+      .then(e => { assert_true(e.data.done, 'done'); });
+  }, 'postMessage MessagePorts from ServiceWorker to Client');
+</script>