/**
* @test
*/
public function addCategoryToObjectStorageHoldingCategory()
{
$category = new \DERHANSEN\SfBanners\Domain\Model\Category();
$categoryObjectStorageMock = $this->getMock('TYPO3\\CMS\\Extbase\\Persistence\\ObjectStorage', array('attach'), array(), '', false);
$categoryObjectStorageMock->expects($this->once())->method('attach')->with($this->equalTo($category));
$this->inject($this->fixture, 'category', $categoryObjectStorageMock);
$this->fixture->addCategory($category);
}