Bug fixes for the new task model

pkg/analysis_server/test/services/refactoring/move_file_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.services.refactoring.move_files;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analyzer/file_system/file_system.dart';
@@ skipping 127 matching lines @@
     assertFileChangeResult(pathA, '''
 import 'new_name.dart';
 ''');
     assertNoFileChange(testFile);
   }
 
   test_file_sourcedUnit() async {
     String pathA = '/project/000/1111/a.dart';
     testFile = '/project/000/1111/22/test.dart';
     addSource(pathA, '''
+library lib;
 part '22/test.dart';
 ''');
-    addTestSource('');
+    addTestSource('''
+part of lib;
+''');
     _performAnalysis();
     // perform refactoring
     _createRefactoring('/project/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
+library lib;
 part '22/new_name.dart';
 ''');
     assertNoFileChange(testFile);
   }
 
   test_file_sourcedUnit_multipleLibraries() async {
     String pathA = '/project/000/1111/a.dart';
     String pathB = '/project/000/b.dart';
     testFile = '/project/000/1111/22/test.dart';
     addSource(pathA, '''
+library lib;
 part '22/test.dart';
 ''');
     addSource(pathB, '''
+library lib;
 part '1111/22/test.dart';
 ''');
-    addTestSource('');
+    addTestSource('''
+part of lib;
+''');
     _performAnalysis();
     // perform refactoring
     _createRefactoring('/project/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
+library lib;
 part '22/new_name.dart';
 ''');
     assertFileChangeResult(pathB, '''
+library lib;
 part '1111/22/new_name.dart';
 ''');
     assertNoFileChange(testFile);
   }
 
   test_project() async {
     String pubspecPath = '/testName/pubspec.yaml';
     String appPath = '/testName/bin/myApp.dart';
     provider.newFile(pubspecPath, '''
 name: testName
@@ skipping 52 matching lines @@
         break;
       }
       for (ChangeNotice notice in result.changeNotices) {
         if (notice.source.fullName.startsWith('/project/')) {
           index.indexUnit(context, notice.resolvedDartUnit);
         }
       }
     }
   }
 }