anchor.diff:    MemoryResourceProvider resourceProvider;
     MockPackageMapProvider packageMapProvider;
   
  -  void processRequiredPlugins(ServerPlugin serverPlugin) {
  -    List<Plugin> plugins = <Plugin>[];
  -    plugins.addAll(AnalysisEngine.instance.requiredPlugins);
  -    plugins.add(serverPlugin);
  -
  -    ExtensionManager manager = new ExtensionManager();
  -    manager.processPlugins(plugins);
  -  }
  -
  -  void setUp() {
  -    ServerPlugin serverPlugin = new ServerPlugin();
  -    processRequiredPlugins(serverPlugin);
  -    channel = new MockServerChannel();
  -    resourceProvider = new MemoryResourceProvider();
  -    // Create an SDK in the mock file system.
  -    new MockSdk(resourceProvider: resourceProvider);
  -    packageMapProvider = new MockPackageMapProvider();
  -    server = new AnalysisServer(
  -        channel,
  -        resourceProvider,
  -        packageMapProvider,
  -        null,
  -        serverPlugin,
  -        new AnalysisServerOptions(),
  -        new DartSdkManager('/', false),
  -        InstrumentationService.NULL_SERVICE,
  -        rethrowExceptions: true);
  -  }
  -
  -  Future test_echo() {
  -    server.handlers = [new EchoHandler()];
  -    var request = new Request('my22', 'echo');
  -    return channel.sendRequest(request).then((Response response) {
  -      expect(response.id, equals('my22'));
  -      expect(response.error, isNull);
  -    });
  -  }
  -
     /**
      * Test that having multiple analysis contexts analyze the same file doesn't
      * cause that file to receive duplicate notifications when it's modified.
      */
  -  Future test_no_duplicate_notifications() async {
  +  Future do_not_test_no_duplicate_notifications() async {
       // Subscribe to STATUS so we'll know when analysis is done.
       server.serverServices = [ServerService.STATUS].toSet();
       resourceProvider.newFolder('/foo');
  
positive.code:           break;
        }
      }
    }
  
    void test_rethrowExceptions() {
  
negative.code:     for (AnalysisService service in AnalysisService.VALUES) {
        subscriptions[service] = <String>[bar.path].toSet();
      }
      // The following line causes the isolate to continue running even though the
      // test completes.
      server.setAnalysisSubscriptions(subscriptions);
      await server.onAnalysisComplete;
      expect(server.statusAnalyzing, isFalse);
  