public void GetAddressStrFromObject() { // Arrange ExternalService service = new ExternalService(); var userModel = new User() { FirstName = "TestFN", LastName = "TestLN", Email = "*****@*****.**", StreetAddress = "TestSA", City = "TestCity", State = "TestState", Zip = "99999" }; // Act var result = service.GetAddressStrFromObject(userModel); // Assert Assert.IsNotNull(result); Assert.AreEqual(result, "TestSA, TestCity, TestState 99999"); }