Moved mock tests to regular tests.

tests/lib/unittest/mock_regexp_negative_test.dart

+// Copyright (c) 2012, 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.
+
+#library('unittestTest');
+#import('../../../lib/unittest/unittest.dart');
+
+main() {
+  test('Mocking: RegExp CallMatcher bad', () {
+    var m = new Mock();           
+    m.when(callsTo(matches('^[A-Z]'))).          
+           alwaysThrow('Method names must start with lower case.');      
+    m.Test();         
+  });
+}