function it_does_not_add_user_when_the_user_already_exists(AddUserCommand $command, UserRepository $repository, User $user)
{
$command->userId()->shouldBeCalled()->willReturn('user-id');
$repository->userOfId(UserId::generate('user-id'))->shouldBeCalled()->willReturn($user);
$user->id()->shouldBeCalled()->willReturn(UserId::generate('user-id'));
$this->shouldThrow(UserAlreadyExistsException::class)->during__invoke($command);
}
public function __invoke(AddUserCommand $command)
{
$userId = UserId::generate($command->userId());
$user = $this->repository->userOfId($userId);
if ($user instanceof User) {
throw new UserAlreadyExistsException($user->id());
}
$this->repository->persist(new User($userId));
}