PhpOrient\SQLCommandsTest::testNullValueHandling PHP Метод

    public function testNullValueHandling()
    {
        try {
            $client = new PhpOrient('localhost', 2424);
            $client->username = 'root';
            $client->password = 'root';
            $client->connect();
            $this->skipTestByOrientDBVersion(['2.1.3', '2.0.13', '1.7.10']);
            try {
                $client->dbDrop('temp', Constants::STORAGE_TYPE_MEMORY, Constants::DATABASE_TYPE_DOCUMENT);
            } catch (\Exception $e) {
                //            echo $e->getMessage();
                $client->getTransport()->debug($e->getMessage());
            }
            $client->dbCreate('temp', Constants::STORAGE_TYPE_MEMORY, Constants::DATABASE_TYPE_GRAPH);
            $client->dbOpen('temp');
            $client->sqlBatch('create class Prova1;' . 'create property Prova1.aString string;' . 'insert into Prova1 (aString) VALUES ("b"),("c"),("d");' . 'create class Prova2;' . 'create property Prova2.aString string;' . 'create property Prova2.anEmbeddedSetOfString embeddedset string;' . 'create property Prova2.prova1 link Prova1;');
            $clusterProva1 = $client->query("select classes[name='Prova1'].defaultClusterId from 0:1", -1)[0]['classes'];
            $clusterProva2 = $client->query("select classes[name='Prova2'].defaultClusterId from 0:1", -1)[0]['classes'];
            //            echo "Default cluster for Prova1: $clusterProva1\n";
            //            echo "Default cluster for Prova2: $clusterProva2\n\n";
            $newRecord = ['oClass' => 'Prova2', 'oData' => ['aString' => 'record di prova', 'anEmbeddedSetOfString' => ['qualcosa 1', 'qualcosa 2', 'ancora altro'], 'prova1' => null]];
            $newRecordObject = Record::fromConfig($newRecord);
            $newRecordObject->setRid(new ID($clusterProva2));
            $tmp = $client->recordCreate($newRecordObject);
            $record = $client->recordLoad($tmp->getRid())[0];
            $this->assertEquals('record di prova', $record->getOData()['aString']);
            $this->assertEquals(null, $record->getOData()['prova1']);
            //            print_r($record->getOData());
        } catch (\Exception $e) {
            //            echo $e . "\n";
        }
    }