public function testHasDocument($collection1Data, $collection2Data, $isEquals)
{
$clientPool = new ClientPool(array('server1' => array('dsn' => 'someDsn1'), 'server2' => array('dsn' => 'someDsn2')));
$collection1 = $clientPool->get($collection1Data[0])->getDatabase($collection1Data[1])->getCollection($collection1Data[2]);
$collection2 = $clientPool->get($collection2Data[0])->getDatabase($collection2Data[1])->getCollection($collection2Data[2]);
$document = $collection1->createDocument();
$this->assertEquals($isEquals, $collection2->hasDocument($document));
}