anchor.diff:                ['-n', '--nobatch'],
                 [],
                 false,
  -              'bool'),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'append_logs',
                 'Do not delete old logs but rather append to them.',
                 ['--append_logs'],
                 [],
                 false,
  -              'bool'
  -              ),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'write_debug_log',
                 'Don\'t write debug messages to stdout but rather to a logfile.',
                 ['--write-debug-log'],
                 [],
                 false,
  -              'bool'
  -              ),
  +              type: 'bool'),
             new _TestOptionSpecification(
                 'write_test_outcome_log',
                 'Write the outcome of all tests executed to a '
  
positive.code:               ['--use-public-packages'],
                [],
                false,
                'bool'),
              new _TestOptionSpecification(
                  'use_repository_packages',
                  'For tests using packages: Use pub.dartlang.org packages '
                  'but use overrides for the packages available in the '
                  'repository.',
                  ['--use-repository-packages'],
                  [],
                  false,
              'bool'),
            new _TestOptionSpecification(
                'build_directory',
                'The name of the build directory, where products are placed.',
  
negative.code:               ['--use-sdk'],
                [],
                false,
                type: 'bool'),
            new _TestOptionSpecification(
                'use_public_packages',
                'For tests using packages: Use pub.dartlang.org packages '
  