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

pkg/unittest/unittest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * A library for writing dart unit tests.
  *
  * To import this library, specify the relative path to
  * pkg/unittest/unittest.dart.
  *
@@ skipping 741 matching lines @@
  * Registers that an exception was caught for the current test.
  */
 _registerException(testNum, e, [trace]) {
   trace = trace == null ? '' : trace.toString();
   if (_tests[testNum].result == null) {
     String message = (e is ExpectException) ? e.message : 'Caught $e';
     _tests[testNum].fail(message, trace);
   } else {
     _tests[testNum].error('Caught $e', trace);
   }
-  if (testNum == _currentTest) {
+  if (testNum == _currentTest &&
+      _tests[testNum].callbackFunctionsOutstanding > 0) {
     _nextTestCase();
   }
 }
 
 /**
  * Runs a batch of tests, yielding whenever an asynchronous test starts
  * running. Tests will resume executing when such asynchronous test calls
  * [done] or if it fails with an exception.
  */
 _nextBatch() {
   while (_currentTest < _tests.length) {
     final testCase = _tests[_currentTest];
     guardAsync(() {
       testCase.run();
       if (!testCase.isComplete && testCase.callbackFunctionsOutstanding == 0) {
         testCase.pass();
       }
     }, testNum:_currentTest);
 
     if (!testCase.isComplete &&
         testCase.callbackFunctionsOutstanding > 0) return;
     _currentTest++;
   }
 
   _completeTests();
 }
 
 /** Publish results on the page and notify controller. */
 _completeTests() {
+  if (!_initialized) return;
   int testsPassed_ = 0;
   int testsFailed_ = 0;
   int testsErrors_ = 0;
 
   for (TestCase t in _tests) {
     switch (t.result) {
       case _PASS:  testsPassed_++; break;
       case _FAIL:  testsFailed_++; break;
       case _ERROR: testsErrors_++; break;
     }
@@ skipping 63 matching lines @@
 }
 
 /** Enable a test by ID. */
 void enableTest(int testId) => _setTestEnabledState(testId, true);
 
 /** Disable a test by ID. */
 void disableTest(int testId) => _setTestEnabledState(testId, false);
 
 /** Signature for a test function. */
 typedef void TestFunction();