/**
  * @see EntityLookup::hasEntity
  */
 public function hasEntity(EntityId $entityId)
 {
     $revision = $this->revisionGetter->getFromId($entityId);
     if (!$revision) {
         return false;
     }
     return true;
 }
 /**
  * @dataProvider provideIds
  */
 public function testGetFromId($id)
 {
     $api = $this->getMockApi();
     $api->expects($this->once())->method('getRequest')->with($this->equalTo(new SimpleRequest('wbgetentities', array('ids' => 'Q1'))))->will($this->returnValue(array('entities' => array('Q123' => array('pageid' => '111', 'lastrevid' => '222', 'modified' => 'TIMESTAMP')))));
     $deserializer = $this->getMockDeserializer();
     $deserializer->expects($this->once())->method('deserialize')->with($this->equalTo(array('pageid' => '111', 'lastrevid' => '222', 'modified' => 'TIMESTAMP')))->will($this->returnValue(new Item()));
     $service = new RevisionGetter($api, $deserializer);
     $result = $service->getFromId($id);
     $this->assertInstanceOf('Mediawiki\\DataModel\\Revision', $result);
     $this->assertInstanceOf('Wikibase\\DataModel\\ItemContent', $result->getContent());
     $this->assertInstanceOf('Wikibase\\DataModel\\Entity\\Item', $result->getContent()->getData());
     $this->assertEquals(111, $result->getPageIdentifier()->getId());
     $this->assertEquals('TIMESTAMP', $result->getTimestamp());
 }