Domain-Driven Design in PHP

Testing Application Services

As you're interested in testing the behavior of the Application Service itself, there's no need to turn it into an integration test with complicated setups going against a real database. You're not interested in testing the low-level details, so most of the time, a unit test will be enough:

class SignUpUserServiceTest extends \PHPUnit_Framework_TestCase{    /**     * @var \Lw\Domain\Model\User\UserRepository     */    private $userRepository;    /**     * @var SignUpUserService     */    private $signUpUserService;    public function setUp()    {        $this->userRepository = new InMemoryUserRepository();        $this->signUpUserService = new SignUpUserService(            $this->userRepository        );    }    /**     * @test     * @expectedException    * \Lw\Domain\Model\User\UserAlreadyExistsException ...