Fix and re-enable analysis server tests that were commented out.

pkg/analysis_server/test/domain_server_test.dart

 // Copyright (c) 2014, 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.domain.server;
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/domain_server.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
 import 'mocks.dart';
 
 main() {
   group('ServerDomainHandler', () {
-//    test('createContext', ServerDomainHandlerTest.createContext);
-//    test('deleteContext_alreadyDeleted', ServerDomainHandlerTest.deleteContext_alreadyDeleted);
+    test('createContext', ServerDomainHandlerTest.createContext);
+    test('deleteContext_alreadyDeleted', ServerDomainHandlerTest.deleteContext_alreadyDeleted);
     test('deleteContext_doesNotExist', ServerDomainHandlerTest.deleteContext_doesNotExist);
-//    test('deleteContext_existing', ServerDomainHandlerTest.deleteContext_existing);
+    test('deleteContext_existing', ServerDomainHandlerTest.deleteContext_existing);
     test('shutdown', ServerDomainHandlerTest.shutdown);
     test('version', ServerDomainHandlerTest.version);
   });
 }
 
 class ServerDomainHandlerTest {
   static void createContext() {
     AnalysisServer server = new AnalysisServer(new MockServerChannel());
     ServerDomainHandler handler = new ServerDomainHandler(server);
 
     Request createRequest = new Request('0', ServerDomainHandler.CREATE_CONTEXT_METHOD);
     createRequest.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, sdkPath);
     Response response = handler.handleRequest(createRequest);
     String contextId = response.getResult(ServerDomainHandler.CONTEXT_ID_RESULT);
     expect(contextId, isNotNull);
   }
 
   static void deleteContext_alreadyDeleted() {
     AnalysisServer server = new AnalysisServer(new MockServerChannel());
     ServerDomainHandler handler = new ServerDomainHandler(server);
 
     Request createRequest = new Request('0', ServerDomainHandler.CREATE_CONTEXT_METHOD);
-    createRequest.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, '');
+    createRequest.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, sdkPath);
     Response response = handler.handleRequest(createRequest);
     String contextId = response.getResult(ServerDomainHandler.CONTEXT_ID_RESULT);
 
     Request deleteRequest = new Request('0', ServerDomainHandler.DELETE_CONTEXT_METHOD);
     deleteRequest.setParameter(ServerDomainHandler.CONTEXT_ID_PARAM, contextId);
     response = handler.handleRequest(deleteRequest);
     response = handler.handleRequest(deleteRequest);
-    expect(response.toJson(), equals({
-      Response.ID: '0',
-      Response.ERROR: 'Context does not exist'
-    }));
+    expect(response.id, equals('0'));
+    expect(response.error, isNotNull);
   }
 
   static void deleteContext_doesNotExist() {
     AnalysisServer server = new AnalysisServer(new MockServerChannel());
     ServerDomainHandler handler = new ServerDomainHandler(server);
 
     Request deleteRequest = new Request('0', ServerDomainHandler.DELETE_CONTEXT_METHOD);
     deleteRequest.setParameter(ServerDomainHandler.CONTEXT_ID_PARAM, 'xyzzy');
     Response response = handler.handleRequest(deleteRequest);
     expect(response.id, equals('0'));
     expect(response.error, isNotNull);
   }
 
   static void deleteContext_existing() {
     AnalysisServer server = new AnalysisServer(new MockServerChannel());
     ServerDomainHandler handler = new ServerDomainHandler(server);
 
     Request createRequest = new Request('0', ServerDomainHandler.CREATE_CONTEXT_METHOD);
-    createRequest.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, '');
+    createRequest.setParameter(ServerDomainHandler.SDK_DIRECTORY_PARAM, sdkPath);
     Response response = handler.createContext(createRequest);
     String contextId = response.getResult(ServerDomainHandler.CONTEXT_ID_RESULT);
 
     Request deleteRequest = new Request('0', ServerDomainHandler.DELETE_CONTEXT_METHOD);
     deleteRequest.setParameter(ServerDomainHandler.CONTEXT_ID_PARAM, contextId);
     response = handler.handleRequest(deleteRequest);
     expect(response.toJson(), equals({
       Response.ID: '0',
       Response.ERROR: null
     }));
@@ skipping 21 matching lines @@
     Response response = handler.handleRequest(versionRequest);
     expect(response.toJson(), equals({
       Response.ID: '0',
       Response.ERROR: null,
       Response.RESULT: {
         ServerDomainHandler.VERSION_RESULT: '0.0.1'
       }
     }));
   }
 }