Support tag configuration.

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.tags.isEmpty &&
-              !test.metadata.tags.containsAll(_config.tags)) {
+          if (!_config.includeTags.isEmpty &&
+              !test.metadata.tags.containsAll(_config.includeTags)) {
             return false;
           }
 
           // Skip tests that do match any tags the user wants to exclude.
           if (_config.excludeTags.intersection(test.metadata.tags).isNotEmpty) {
             return false;
           }
 
           return true;
         });
@@ skipping 12 matching lines @@
 
     var yellow = _config.color ? '\u001b[33m' : '';
     var bold = _config.color ? '\u001b[1m' : '';
     var noColor = _config.color ? '\u001b[0m' : '';
 
     var buffer = new StringBuffer()
       ..write("${yellow}Warning:$noColor ")
       ..write(unknownTags.length == 1 ? "A tag was " : "Tags were ")
       ..write("used that ")
       ..write(unknownTags.length == 1 ? "wasn't " : "weren't ")
-      ..writeln("specified on the command line.");
+      ..writeln("specified in dart_test.yaml.");
 
     unknownTags.forEach((tag, entries) {
       buffer.write("  $bold$tag$noColor was used in");
 
       if (entries.length == 1) {
         buffer.writeln(" ${_entryDescription(entries.single)}");
         return;
       }
 
       buffer.write(":");
       for (var entry in entries) {
         buffer.write("\n    ${_entryDescription(entry)}");
       }
       buffer.writeln();
     });
 
     print(buffer.toString());
   }
 
   /// Collects all tags used by [suite] or its children that aren't also passed
   /// on the command line.
   ///
   /// This returns a map from tag names to lists of entries that use those tags.
   Map<String, List<GroupEntry>> _collectUnknownTags(Suite suite) {
-    var knownTags = _config.tags.union(_config.excludeTags);
     var unknownTags = {};
     var currentTags = new Set();
 
     collect(entry) {
       var newTags = new Set();
-      for (var unknownTag in entry.metadata.tags.difference(knownTags)) {
+      for (var unknownTag in
+          entry.metadata.tags.difference(_config.knownTags)) {
         if (currentTags.contains(unknownTag)) continue;
         unknownTags.putIfAbsent(unknownTag, () => []).add(entry);
         newTags.add(unknownTag);
       }
 
       if (entry is! Group) return;
 
       currentTags.addAll(newTags);
       for (var child in entry.entries) {
         collect(child);
@@ skipping 25 matching lines @@
       await _debugOperation.valueOrCancellation();
     }).listen(null);
 
     var results = await Future.wait([
       _suiteSubscription.asFuture().then((_) => _engine.suiteSink.close()),
       _engine.run()
     ]);
     return results.last;
   }
 }