Use generated classes to create requests in analysis server unit tests.

pkg/analysis_server/test/edit/assists_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.edit.assists;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/edit/edit_domain.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol2.dart';
 import 'package:analysis_server/src/services/correction/change.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart' hide ERROR;
 
 import '../analysis_abstract.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(AssistsTest);
 }
 
 
 @ReflectiveTestCase()
 class AssistsTest extends AbstractAnalysisTest {
   List<Change> changes;
 
   void prepareAssists(String search, [int length = 0]) {
     int offset = findOffset(search);
     prepareAssistsAt(offset, length);
   }
 
   void prepareAssistsAt(int offset, int length) {
-    Request request = new Request('0', EDIT_GET_ASSISTS);
-    request.setParameter(FILE, testFile);
-    request.setParameter(OFFSET, offset);
-    request.setParameter(LENGTH, length);
+    Request request = new EditGetAssistsParams(testFile, offset,
+        length).toRequest('0');
     Response response = handleSuccessfulRequest(request);
     List<Map<String, dynamic>> changeJsonList = response.getResult(ASSISTS);
     // TODO(scheglov) consider using generated classes and decoders
     changes = changeJsonList.map((Map<String, dynamic> changeJson) {
       Change change = new Change(changeJson[MESSAGE]);
       changeJson[EDITS].forEach((Map<String, dynamic> fileEditJson) {
         FileEdit fileEdit = new FileEdit(fileEditJson[FILE]);
         change.fileEdits.add(fileEdit);
         fileEditJson[EDITS].forEach((Map<String, dynamic> json) {
           Edit edit = new Edit(json[OFFSET], json[LENGTH], json[REPLACEMENT]);
@@ skipping 71 matching lines @@
       if (change.message == message) {
         String resultCode =
             Edit.applySequence(testCode, change.fileEdits[0].edits);
         expect(resultCode, expectedCode);
         return;
       }
     }
     fail("Expected to find |$message| in\n" + changes.join('\n'));
   }
 }