add element to completion suggestions

pkg/analysis_server/test/context_manager_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.context.directory.manager;
 
 import 'package:analysis_server/src/context_manager.dart';
 import 'reflective_tests.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
@@ skipping 88 matching lines @@
     // pubspec.yaml files.
     String subdir1Path = posix.join(projPath, 'subdir1');
     String subdir2Path = posix.join(projPath, 'subdir2');
     String pubspec1Path = posix.join(subdir1Path, 'pubspec.yaml');
     String pubspec2Path = posix.join(subdir2Path, 'pubspec.yaml');
     resourceProvider.newFile(pubspec1Path, 'pubspec');
     resourceProvider.newFile(pubspec2Path, 'pubspec');
     manager.setRoots(<String>[projPath], <String>[]);
     return pumpEventQueue().then((_) {
       expect(manager.currentContextPaths.toSet(),
-          [projPath, subdir1Path, subdir2Path].toSet());
+          [subdir1Path, subdir2Path, projPath].toSet());
       manager.now++;
       manager.refresh();
       return pumpEventQueue().then((_) {
         expect(manager.currentContextPaths.toSet(),
-          [projPath, subdir1Path, subdir2Path].toSet());
+          [subdir1Path, subdir2Path, projPath].toSet());
         expect(manager.currentContextTimestamps[projPath], manager.now);
         expect(manager.currentContextTimestamps[subdir1Path], manager.now);
         expect(manager.currentContextTimestamps[subdir2Path], manager.now);
       });
     });
   }
 
   void test_setRoots_addFolderWithDartFile() {
     String filePath = posix.join(projPath, 'foo.dart');
     resourceProvider.newFile(filePath, 'contents');
@@ skipping 623 matching lines @@
     currentContextFilePaths.remove(path);
     currentContextPackageMaps.remove(path);
   }
 
   @override
   void updateContextPackageMap(Folder contextFolder, Map<String,
       List<Folder>> packageMap) {
     currentContextPackageMaps[contextFolder.path] = packageMap;
   }
 }