anchor.diff:  }
   
   Future<Null> _runFlutterTest(String workingDirectory, {
  -    String script,
  -    bool expectFailure: false,
  -    bool printOutput: true,
  -    List<String> options: const <String>[],
  -    bool skip: false,
  +  String script,
  +  bool expectFailure: false,
  +  bool printOutput: true,
  +  List<String> options: const <String>[],
  +  bool skip: false,
  +  Duration timeout: _kLongTimeout,
   }) {
     final List<String> args = <String>['test']..addAll(options);
     if (flutterTestArgs != null && flutterTestArgs.isNotEmpty)
  
positive.code:     expectFailure: expectFailure,
      printOutput: printOutput,
      skip: skip,
    );
  }
  
  
negative.code:     options: options,
      expectFailure: true,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runFlutterTest(automatedTests,
      script: path.join('test_smoke_test', 'pass_test.dart'),
      options: options,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runFlutterTest(automatedTests,
      script: path.join('test_smoke_test', 'crash1_test.dart'),
      options: options,
      expectFailure: true,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runFlutterTest(automatedTests,
      script: path.join('test_smoke_test', 'crash2_test.dart'),
      options: options,
      expectFailure: true,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runFlutterTest(automatedTests,
      script: path.join('test_smoke_test', 'syntax_error_test.broken_dart'),
      options: options,
      expectFailure: true,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runFlutterTest(automatedTests,
      script: path.join('test_smoke_test', 'missing_import_test.broken_dart'),
      options: options,
      expectFailure: true,
      printOutput: false,
      timeout: _kShortTimeout,
    );
    await _runCommand(flutter,
      <String>['drive', '--use-existing-app']
  