public void ShouldRegisterCustomerWhenCommandIsValid()
        {
            var command = new CreateCustomerCommand();

            command.FirstNome = "João";
            command.LastNome  = "Nascimento";
            command.Document  = "12345678914";
            command.Email     = "*****@*****.**";
            command.Phone     = "2148987841";

            Assert.Equals(true, command.IsValidCommand());

            var handler = new CustomerHandler(new FakeCustomerRepository(), new FakeEmailService());
            var result  = handler.Handler(command);

            Assert.AreNotEqual(null, result);
            Assert.AreEqual(true, handler.IsValid);
        }