anchor.diff:    group('MongoProvider', () {
       MongoProvider months;
       MongoProvider rndData;
  +    MongoProvider rndAllData;
       Future ready;
       MongoDatabase mongodb;
       Map january, february, march, april, may, june, july,
  
positive.code:   return newData;
  }
  
  List _stripPrivateFieldsList(List<Map<String, dynamic>> data){
    List newData = [];
    data.forEach((oldMap) {
      newData.add(_stripPrivateFields(oldMap));
    });
    return newData;
  }
  
negative.code:       .then((_) => mongodb.randomChangeMongoProvider())
        .then((_){
          months = mongodb.collection('months');
          rndAllData = mongodb.collection('random');
  //        rndData = mongodb.collection('random').find({'a.a': 'hello'});
          rndData = mongodb.collection('random').find({'a.a.a': {'\$gt': {}}});
        });
      });
  
  