public void EmployeeValidatorTests_EmployeeAddressShouldBeINVALIDWhenNoAustralianPostCodeDetected() { //arrange var builder = new EmployeeBuilder(); var employee = builder.WithEmployeeFromSouthAfrica() .Build(); //act //system under test var sut = new EmployeeValidator(employee); //assert sut.IsValidAustralianAddress().ShouldBeFalse(); }