Sokil\Mongo\CursorTest::testReadSecondaryOnly PHP Method

    public function testReadSecondaryOnly(array $tags = null)
    {
        $qb = $this->collection->find()->readSecondaryOnly(array(array('dc' => 'kyiv'), array('dc' => 'lviv')));
        $qb->current();
        $this->assertEquals(array('type' => \MongoClient::RP_SECONDARY, 'tagsets' => array(array('dc' => 'kyiv'), array('dc' => 'lviv'))), $qb->getReadPreference());
    }