anchor.diff:  import 'package:flutter_tools/src/fuchsia/fuchsia_sdk.dart';
   import 'package:flutter_tools/src/project.dart';
   import 'package:meta/meta.dart';
  -import 'package:mockito/mockito.dart';
   import 'package:process/process.dart';
  +import 'package:test/fake.dart';
   
   import '../../src/common.dart';
   import '../../src/context.dart';
   import '../../src/testbed.dart';
   
  -// Defined globally for mocks to use.
  +// Defined globally for fakes to use.
   FileSystem fileSystem;
   
   void main() {
  
positive.code:       'FLUTTER_ROOT': '/'
      },
    );
    MockFuchsiaSdk fuchsiaSdk;
  
    setUp(() {
      fuchsiaSdk = MockFuchsiaSdk();
      fileSystem = MemoryFileSystem.test();
    });
  
  
negative.code:   });
  }
  
  class FakeFuchsiaPM extends Fake implements FuchsiaPM {
    String _appName;
  
    @override
  