public void ValidateFather() { Person father = new Person("King Shan", "Male", ListOfRelations); Person mother = new Person("Queen Anga", "Female", ListOfRelations); Relationship spouse = new Relationship(father, mother, "Spouse"); ListOfRelations.Add(spouse); Person person = new Person("Chit", "Male", ListOfRelations); Relationship relation = new Relationship(mother, person, "Child"); ListOfRelations.Add(relation); Person findfather = person.Father(); Assert.AreEqual(father, findfather); }