Support tag configuration.

test/runner/configuration/configuration_test.dart

 // Copyright (c) 2016, 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.
 
 @TestOn("vm")
 
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 
 import 'package:test/src/backend/test_platform.dart';
@@ skipping 120 matching lines @@
         expect(merged.pubServeUrl.port, equals(5678));
         expect(merged.pattern, equals("gonk"));
         expect(merged.platforms, equals([TestPlatform.dartium]));
         expect(merged.paths, equals(["blech"]));
       });
     });
 
     group("for tags", () {
       test("if neither is defined, preserves the default", () {
         var merged = new Configuration().merge(new Configuration());
-        expect(merged.tags, isEmpty);
+        expect(merged.includeTags, isEmpty);
         expect(merged.excludeTags, isEmpty);
       });
 
       test("if only the old configuration's is defined, uses it", () {
         var merged = new Configuration(
-                tags: ["foo", "bar"],
+                includeTags: ["foo", "bar"],
                 excludeTags: ["baz", "bang"])
             .merge(new Configuration());
 
-        expect(merged.tags, unorderedEquals(["foo", "bar"]));
+        expect(merged.includeTags, unorderedEquals(["foo", "bar"]));
         expect(merged.excludeTags, unorderedEquals(["baz", "bang"]));
       });
 
       test("if only the new configuration's is defined, uses it", () {
         var merged = new Configuration().merge(new Configuration(
-            tags: ["foo", "bar"],
+            includeTags: ["foo", "bar"],
             excludeTags: ["baz", "bang"]));
 
-        expect(merged.tags, unorderedEquals(["foo", "bar"]));
+        expect(merged.includeTags, unorderedEquals(["foo", "bar"]));
         expect(merged.excludeTags, unorderedEquals(["baz", "bang"]));
       });
 
       test("if both are defined, unions them", () {
         var older = new Configuration(
-            tags: ["foo", "bar"],
+            includeTags: ["foo", "bar"],
             excludeTags: ["baz", "bang"]);
         var newer = new Configuration(
-            tags: ["bar", "blip"],
+            includeTags: ["bar", "blip"],
             excludeTags: ["bang", "qux"]);
         var merged = older.merge(newer);
 
-        expect(merged.tags, unorderedEquals(["foo", "bar", "blip"]));
+        expect(merged.includeTags, unorderedEquals(["foo", "bar", "blip"]));
         expect(merged.excludeTags, unorderedEquals(["baz", "bang", "qux"]));
       });
     });
 
     group("for timeout", () {
       test("if neither is defined, preserves the default", () {
         var merged = new Configuration().merge(new Configuration());
         expect(merged.timeout, equals(new Timeout.factor(1)));
       });
 
@@ skipping 20 matching lines @@
         var older = new Configuration(
             timeout: new Timeout(new Duration(seconds: 1)));
         var newer = new Configuration(
             timeout: new Timeout(new Duration(seconds: 2)));
         var merged = older.merge(newer);
         expect(merged.timeout, equals(new Timeout(new Duration(seconds: 2))));
       });
     });
   });
 }