anchor.diff:  import 'package:test/test.dart';
   
   void main() {
  -  test("fail", () => throw 'oh no');
  +  test("fail", () async {
  +    await new Future.delayed(Duration.ZERO);
  +    throw 'oh no';
  +  });
   }
   ''').create();
   
  
positive.code: import 'package:test/test.dart';
  
  void main() {
    test("timeout", () {});
  }
  ''').create();
  
  
negative.code: import 'package:test/test.dart';
  
  void main() {
    test("fail", () async {
      await new Future.delayed(Duration.ZERO);
      throw 'oh no';
    }, onPlatform: {
      "browser": new Timeout(Duration.ZERO)
    });
  }
  ''').create();
  