/**
  * @group DDC-117
  */
 public function testIndexByMetadataColumn()
 {
     $this->_rsm->addEntityResult('Doctrine\\Tests\\Models\\Legacy\\LegacyUser', 'u');
     $this->_rsm->addJoinedEntityResult('Doctrine\\Tests\\Models\\Legacy', 'lu', 'u', '_references');
     $this->_rsm->addMetaResult('lu', '_source', '_source', true);
     $this->_rsm->addMetaResult('lu', '_target', '_target', true);
     $this->_rsm->addIndexBy('lu', '_source');
     $this->assertTrue($this->_rsm->hasIndexBy('lu'));
 }