anchor.diff:  
   main(){
     unit.setUp(currentDescribe.setUp);
  -  unit.tearDown(currentDescribe.tearDown);
   }
  
positive.code: 
    setUp() {
      _beforeEachFnsForCurrentTest.addAll(beforeEachFns);
    }
  
    tearDown() {
      afterEachFns.forEach((fn) => fn());
    }
  }
  
  
negative.code: import 'package:angular/utils.dart' as utils;
  
  var _beforeEachFnsForCurrentTest = [];
  var _afterEachFnsForCurrentTest = [];
  
  _withSetup(fn) => () {
    _beforeEachFnsForCurrentTest.sort((a, b) => Comparable.compare(b[1], a[1]));
    _beforeEachFnsForCurrentTest.forEach((fn) => fn[0]());
  