anchor.diff:  
     void toEqual(expected) => toHaveSameProps(expected);
     void toThrowError([message = ""]) => toThrowWith(message: message);
  -  void toBePromise() => _expect(actual is Future, equals(true));
  +  void toBePromise() => gns.guinness.matchers.toBeTrue(actual is Future);
     void toImplement(expected) => toBeA(expected);
  -  void toBeNaN() => _expect(double.NAN.compareTo(actual) == 0, equals(true));
  +  void toBeNaN() => gns.guinness.matchers.toBeTrue(double.NAN.compareTo(actual) == 0);
     void toHaveText(expected) => _expect(elementText(actual), expected);
     void toHaveBeenCalledWith([a = _u, b = _u, c = _u, d = _u, e = _u, f = _u]) =>
         _expect(_argsMatch(actual, a, b, c, d, e, f), true,
  
positive.code: library test_lib.test_lib;
  
  import 'package:guinness/guinness.dart' as gns;
  export 'package:guinness/guinness.dart'
  
negative.code: import 'package:angular2/src/di/injector.dart' show Injector;
  import 'package:angular2/src/facade/collection.dart' show StringMapWrapper;
  
  import 'test_injector.dart';
  export 'test_injector.dart' show inject;
  
  bool IS_DARTIUM = true;
  
  