public void ValidateChildren() { 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 child1 = new Person("Chit", "Male", ListOfRelations); Relationship relation1 = new Relationship(mother, child1, "Child"); ListOfRelations.Add(relation1); Person child2 = new Person("Ish", "Male", ListOfRelations); Relationship relation2 = new Relationship(mother, child2, "Child"); ListOfRelations.Add(relation2); Person wife = new Person("Vich", "Male", ListOfRelations); Relationship relation3 = new Relationship(mother, wife, "Child"); ListOfRelations.Add(relation3); List <String> children = mother.Children(null); Assert.AreEqual(children[0], "Chit"); Assert.AreEqual(children[1], "Ish"); Assert.AreEqual(children[2], "Vich"); }