usecase spec for creating a tag

CreateSpec.php

<?php

namespace spec\Ushahidi\Usecase\Tag;

use Ushahidi\Tool\Validator;
use Ushahidi\Usecase\Tag\CreateTagRepository;
use Ushahidi\Usecase\Tag\CreateTagRequest;

use PhpSpec\ObjectBehavior;

class CreateSpec extends ObjectBehavior
{
	function let(CreateTagRepository $repo, Validator $valid, CreateTagRequest $req)
	{
		$this->beConstructedWith($repo, $valid);
	}

	function it_is_initializable()
	{
		$this->shouldHaveType('Ushahidi\Usecase\Tag\Create');
	}

	function it_fails_with_invalid_input($req, $valid)
	{
		$valid->check($req)->shouldBeCalled()->willReturn(false);
		$valid->errors('tag')->shouldBeCalled()->willReturn([
			'tag' => 'fail',
			]);
		$this->shouldThrow('Ushahidi\Exception\ValidatorException')->duringInteract($req);
	}

	function it_can_create_a_tag_with_valid_input($req, $valid, $repo)
	{
		$valid->check($req)->shouldBeCalled()->willReturn(true);

		$repo->createTag($req)->shouldBeCalled();
		$repo->getCreatedTagId()->shouldBeCalled();
		$repo->getCreatedTagTimestamp()->shouldBeCalled();

		$this->shouldNotThrow('Ushahidi\Exception\ValidatorException')->duringInteract($req);
	}
}