public function testCriteriaStringParameter()
 {
     $authorRepository = new AuthorRepository();
     $authorRepository->criteria(['WithPostsCriteria']);
     $this->assertTrue($authorRepository->hasCriteria());
     $this->assertTrue($authorRepository->count() == count($this->authors));
     $authors = $authorRepository->all();
     $this->assertTrue(isset($authors[0]['posts']));
 }