Use boolean selector syntax for tags.

lib/src/runner.dart

 // Copyright (c) 2015, 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.
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:async/async.dart';
 
 import 'backend/group.dart';
@@ skipping 184 matching lines @@
       return loadSuite.changeSuite((suite) {
         _warnForUnknownTags(suite);
 
         return suite.filter((test) {
           // Skip any tests that don't match the given pattern.
           if (_config.pattern != null && !test.name.contains(_config.pattern)) {
             return false;
           }
 
           // If the user provided tags, skip tests that don't match all of them.
-          if (!_config.includeTags.isEmpty &&
-              !test.metadata.tags.containsAll(_config.includeTags)) {
-            return false;
-          }
+          if (!_config.includeTags.evaluate(test.metadata.tags)) return false;
 
           // Skip tests that do match any tags the user wants to exclude.
-          if (_config.excludeTags.intersection(test.metadata.tags).isNotEmpty) {
-            return false;
-          }
+          if (_config.excludeTags.evaluate(test.metadata.tags)) return false;
 
           return true;
         });
       });
     });
   }
 
   /// Prints a warning for any unknown tags referenced in [suite] or its
   /// children.
   void _warnForUnknownTags(Suite suite) {
@@ skipping 82 matching lines @@
       await _debugOperation.valueOrCancellation();
     }).listen(null);
 
     var results = await Future.wait([
       _suiteSubscription.asFuture().then((_) => _engine.suiteSink.close()),
       _engine.run()
     ]);
     return results.last;
   }
 }