public void Integrated_add_appointment_to_patient() { // Arrange DateTime appointmentDate = DateTime.Now; string interview = "The patient is as fit as it can be!"; var appointment = new Appointment { Date = appointmentDate, Interview = interview }; string firstName = "Foo"; string lastName = "Fighters"; DatabaseTools.AddPatientToDatabase(firstName, lastName, appointmentDate); PatientEntity patientEntity = DatabaseTools.GetPatientFromDatabase(firstName, lastName).First(); Assert.AreEqual(patientEntity.Appointments.Count, 1); // Act _patientService.AddAppointmentToPatient(patientEntity.Id, appointment); // Assert PatientEntity updatedPatientEntity = DatabaseTools.GetPatientFromDatabase(firstName, lastName).First(); Assert.AreEqual(updatedPatientEntity.Appointments.Count, 2); Assert.AreEqual(updatedPatientEntity.Appointments.First().Date.Date, appointmentDate.Date); Assert.AreEqual(updatedPatientEntity.Appointments.Last().Date.Date, appointmentDate.Date); StringAssert.Contains(updatedPatientEntity.Appointments.First().Interview, interview); }