public void DeleteForcesLecturer() { //Act Force.AddLecturer(Lecturer1); Force.AddLecturer(Lecturer2); Force.AddLecturer(Lecturer3); var result1 = Force.DeleteLecturer("Jan", "Testowy"); var result2 = Force.DeleteLecturer("Antoni", "Testowy"); var result3 = Force.DeleteLecturer(Lecturer2); //Assert Assert.IsTrue(result1); Assert.IsFalse(result2); Assert.IsTrue(result3); }