anchor.diff:    String get testPackageLanguageVersion =>
         '${ExperimentStatus.currentVersion.major}.'
         '${ExperimentStatus.currentVersion.minor}';
  -
  -  @override
  -  void setUp() {
  -    super.setUp();
  -    writeTestPackageAnalysisOptionsFile(
  -      AnalysisOptionsFileConfig(
  -        experiments: [
  -          EnableString.triple_shift,
  -        ],
  -      ),
  -    );
  -  }
   
     test_const_equals() async {
       // TODO(brianwilkerson) Add '>>>' to MockSdk and remove the code
  
positive.code: 
    test_nonConst_equals() async {
      // TODO(brianwilkerson) Add '>>>' to MockSdk and remove the code
      //  UNDEFINED_OPERATOR when constant update is enabled by default.
      await verifyVersion('2.5.0', '''
  var a = 42 >>> 3;
  ''', expectedErrors: [
  
negative.code: 
    test_nonConst_lessThan() async {
      // TODO(brianwilkerson) Add '>>>' to MockSdk and remove the code
      //  UNDEFINED_OPERATOR when triple_shift is enabled by default.
      await verifyVersion('2.2.0', '''
  var a = 42 >>> 3;
  ''', expectedErrors: [
  