Bug 1134224 - onerror for test_bug1132395.html, r=ehsan

dom/workers/test/test_bug1132395.html

@@ -16,7 +16,6 @@
 // This test is full of dummy debug messages. This is because I need to follow
 // an hard-to-reproduce timeout failure.
 
-info("test started");
 SpecialPowers.pushPrefEnv({ set: [["dom.workers.sharedWorkers.enabled", true]] }, function() {
   info("test started");
   var sw = new SharedWorker('bug1132395_sharedWorker.js');
@@ -26,6 +25,11 @@ SpecialPowers.pushPrefEnv({ set: [["dom.workers.sharedWorkers.enabled", true]] }
     SimpleTest.finish();
   }
 
+  sw.onerror = function(event) {
+    ok(false, "Failed to create a ServiceWorker");
+    SimpleTest.finish();
+  }
+
   info("sw.postmessage called");
   sw.port.postMessage('go');
 });