public function getIdentifierByObjectReturnsUUIDForKnownObject()
{
$knownObject = $this->createMock(ProxyInterface::class);
$fakeUUID = '123-456';
$session = new Persistence\Generic\Session();
$session->registerObject($knownObject, $fakeUUID);
$this->assertEquals($fakeUUID, $session->getIdentifierByObject($knownObject));
}