Fixed a nasty bug in unittest, where is we have a non-async test that throws an exception, followed…

pkg/unittest/unittest.dart

Index: pkg/unittest/unittest.dart
===================================================================
--- pkg/unittest/unittest.dart	(revision 12573)
+++ pkg/unittest/unittest.dart	(working copy)
@@ -759,7 +759,8 @@
   } else {
     _tests[testNum].error('Caught $e', trace);
   }
-  if (testNum == _currentTest) {
+  if (testNum == _currentTest &&
+      _tests[testNum].callbackFunctionsOutstanding > 0) {
     _nextTestCase();
   }
 }
@@ -789,6 +790,7 @@
 
 /** Publish results on the page and notify controller. */
 _completeTests() {
+  if (!_initialized) return;
   int testsPassed_ = 0;
   int testsFailed_ = 0;
   int testsErrors_ = 0;