public void Doctor_Delete_DeletesSingleDoctor() { Doctor doctor1 = new Doctor("John", "tom567", "567", "Physician"); doctor1.Save(); Doctor doctor2 = new Doctor("John", "tom567", "567", "Cardiology"); doctor2.Save(); doctor1.DeleteSingleDoctor(); List <Doctor> testList = Doctor.GetAll(); List <Doctor> controlList = new List <Doctor> { doctor2 }; Assert.Equal(controlList, testList); }