Wire up onTestResult callbacks.

lib/unittest/test_case.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.
 
 /**
  * testcase.dart: this file is sourced by unittest.dart. It defines [TestCase]
  * and assumes unittest defines the type [TestFunction].
  */
 
 /** Summarizes information about a single test case. */
@@ skipping 49 matching lines @@
       test();
     } finally {
       if (_teardown != null) {
         _teardown();
       }
     }
   }
 
   void pass() {
     result = _PASS;
+    _config.onTestResult(this);
   }
 
   void fail(String message, String stackTrace) {
     result = _FAIL;
     this.message = message;
     this.stackTrace = stackTrace;
+    _config.onTestResult(this);
   }
 
   void error(String message, String stackTrace) {
     result = _ERROR;
     this.message = message;
     this.stackTrace = stackTrace;
+    _config.onTestResult(this);
   }
 }