/**
* @test
*/
public function addRegistrationWaitlistToObjectStorageHoldingRegistrationWaitlist()
{
$registration = new Registration();
$registrationObjectStorageMock = $this->getMock('TYPO3\\CMS\\Extbase\\Persistence\\ObjectStorage', ['attach'], [], '', false);
$registrationObjectStorageMock->expects($this->once())->method('attach')->with($this->equalTo($registration));
$this->inject($this->subject, 'registrationWaitlist', $registrationObjectStorageMock);
$this->subject->addRegistrationWaitlist($registration);
}