public void AddTeacherToSubject() { Univercity U = new Univercity("test"); ISubject subject1 = new Subject("test", SubjectType.Credited); ISubject subject2 = new Subject("test2", SubjectType.Exem); ITeacher teacher = new Teacher(new FullName("test", "test", "test"), new DateTime(2000, 12, 14), Title.Lecture); string ns1 = subject1.NameSubject.ToString(); string ns2 = subject2.NameSubject.ToString(); string id = teacher.Id.ToString(); string result = teacher.Name.ToString(); U.AddSubject(subject1); U.AddSubject(subject2); U.AddTeacher(teacher); U.AddSubjectToTeacher(id, ns1); U.AddSubjectToTeacher(id, ns2); Assert.AreEqual(subject1.NameTeacher.ToString(), result); Assert.AreEqual(subject2.NameTeacher.ToString(), result); }