public function testNonCollectionRelationshipsUpdated()
{
$this->clearDb();
$tw1 = new Tweeto('tw1');
$tw2 = new Tweeto('tw2');
$tw3 = new Tweeto('tw3');
$tw1->setFollows($tw2);
$this->em->persist($tw1);
$this->em->persist($tw3);
$this->em->flush();
$this->assertGraphExist('(t1:Tweeto {name:"tw1"})-[:FOLLOWS]->(t2:Tweeto {name:"tw2"})');
$tw1->setFollows($tw3);
$this->em->flush();
$this->em->clear();
$this->assertGraphExist('(t1:Tweeto {name:"tw1"})-[:FOLLOWS]->(t3:Tweeto {name:"tw3"})');
$this->assertGraphNotExist('(t1:Tweeto {name:"tw1"})-[:FOLLOWS]->(t2:Tweeto {name:"tw2"})');
}