Upstream service worker indexedDB tests to WPT

third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html

Index: third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html
diff --git a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html
index a6f66517910eefd54abc722c7cf16a7d6f3794ac..9d7b5cd87f41fd1946659d4d561a779433ccc039 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html
+++ b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/postmessage.https.html
@@ -57,4 +57,31 @@ async_test(function(t) {
         .catch(unreached_rejection(t));
     }
   }, 'postMessage to a ServiceWorker (and back via MessagePort)');
+

[Marijn Kruisselbrink, 2017/05/30 19:24:41]

did you intend to have this as part of this change? 

[mike3, 2017/05/30 21:22:32]

No, I did not. This was part of my research regarding your previous review. (I
mentioned that I would file an issue against the specification, but I never
shared a link here. That issue is available at
https://github.com/w3c/ServiceWorker/issues/1146 .) It's not appropriate for
this change set, though, so I've removed it.

+
+promise_test(function(t) {
+    var scope = 'resources/blank.html';
+    var worker;
+
+    return service_worker_unregister_and_register(
+        t, 'resources/postmessage-worker.js', scope)
+      .then(function(registration) {
+		  worker = registration.installing;
+		  return new Promise(function(resolve) {
+			  worker.addEventListener('statechange', function(event) {
+				  if (event.target.state === 'activated') {
+					resolve(registration);
+				  }
+			    });
+		    });
+	    })
+	  .then(function(registration) {
+		  return registration.unregister();
+		})
+	  .then(function() {
+		  assert_throws({ name: 'InvalidStateError' }, function() {
+			  worker.postMessage({});
+		    });
+	    });
+  }, 'invoked on a redundant worker');
 </script>