Enable frong testing components.

tools/testing/dart/test_options.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.
 
 #library("test_options_parser");
 
 /**
  * Specification of a single test option.
  *
  * The name of the specification is used as the key for the option in
@@ skipping 123 matching lines @@
         if ((i + 1) >= arguments.length) {
           print('No value supplied for option $name');
           return null;
         }
         value = arguments[++i];
       } else {
         // The option name does not start with '-' or '--' so we
         // assume that the rest of the arguments specify tests or test
         // suites to run.
         configuration['rest'] = arguments.getRange(i, numArguments - i);
-        return configuration;
+        return _expandConfigurations(configuration);
       }
       // Find the option specification for the name.
       var spec = _getSpecification(name);
       if (spec == null) {
         print('Unknown test option $name');
         return null;
       }
       // Parse the value for the option.
       if (spec.type == 'bool') {
         if (!value.isEmpty()) {
@@ skipping 145 matching lines @@
       if (option.keys.some((key) => key == name)) {
         return option;
       }
     }
     return null;
   }
 
 
   List<_TestOptionSpecification> _options;
 }