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

pkg/analysis_server/test/edit/refactoring_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.refactoring;
 
 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' show
+    EditGetAvailableRefactoringsParams;
 import 'package:analysis_testing/reflective_tests.dart';
 import 'package:unittest/unittest.dart' hide ERROR;
 
 import '../analysis_abstract.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(GetAvailableRefactoringsTest);
 }
@@ skipping 10 matching lines @@
       List<String> kinds = getAvailableRefactorings(search);
       expect(kinds, contains(RefactoringKind.RENAME));
     });
   }
 
   /**
    * Returns the list of available refactorings of the offset of [search] with
    * [length] characters selected.
    */
   List<String> getAvailableRefactorings(String search, [int length = 0]) {
-    Request request = new Request('0', EDIT_GET_AVAILABLE_REFACTORINGS);
-    request.setParameter(FILE, testFile);
-    request.setParameter(OFFSET, findOffset(search));
-    request.setParameter(LENGTH, length);
+    Request request = new EditGetAvailableRefactoringsParams(testFile,
+        findOffset(search), length).toRequest('0');
     Response response = handleSuccessfulRequest(request);
     return response.getResult(KINDS);
   }
 
   @override
   void setUp() {
     super.setUp();
     createProject();
     handler = new EditDomainHandler(server);
   }
@@ skipping 108 matching lines @@
 main() {
   // not an element
 }
 ''');
     return waitForTasksFinished().then((_) {
       List<String> kinds = getAvailableRefactorings('// not an element');
       expect(kinds, isNot(contains(RefactoringKind.RENAME)));
     });
   }
 }