public void GetAllUsers() { // Arrange ExternalService exService = new ExternalService(); UserService service = new UserService(exService); using (var _session = DBSetup()) { var userModel1 = new User() { FirstName = "TestFN1", LastName = "TestLN1", Email = "*****@*****.**", StreetAddress = "TestSA1", City = "TestCity1", State = "TestState1", Zip = "99998" }; _session.Store(userModel1); var userModel2 = new User() { FirstName = "TestFN2", LastName = "TestLN2", Email = "*****@*****.**", StreetAddress = "TestSA2", City = "TestCity2", State = "TestState2", Zip = "99999" }; _session.Store(userModel2); _session.SaveChanges(); // Act List<User> result = service.GetAllUsers(_session); // Assert Assert.IsNotNull(result); Assert.AreEqual(result.Count, 2); } }