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

pkg/analysis_server/test/analysis_hover_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.analysis.hover;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/computer/computer_hover.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
+import 'package:analysis_server/src/protocol2.dart';
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import 'analysis_abstract.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(AnalysisHoverTest);
 }
 
 
 @ReflectiveTestCase()
 class AnalysisHoverTest extends AbstractAnalysisTest {
   Future<Hover> prepareHover(String search) {
     int offset = findOffset(search);
     return prepareHoverAt(offset);
   }
 
   Future<Hover> prepareHoverAt(int offset) {
     return waitForTasksFinished().then((_) {
-      Request request = new Request('0', ANALYSIS_GET_HOVER);
-      request.setParameter(FILE, testFile);
-      request.setParameter(OFFSET, offset);
+      Request request = new AnalysisGetHoverParams(testFile,
+          offset).toRequest('0');
       Response response = handleSuccessfulRequest(request);
       List<Map<String, Object>> hoverJsons = response.getResult(HOVERS);
       List<Hover> hovers = hoverJsons.map((json) {
         return new Hover.fromJson(json);
       }).toList();
       return hovers.isNotEmpty ? hovers.first : null;
     });
   }
 
   @override
@@ skipping 176 matching lines @@
 library my.library;
 main() {
   // nothing
 }
 ''');
     return prepareHover('nothing').then((Hover hover) {
       expect(hover, isNull);
     });
   }
 }