RedUNIT\Base\Xnull::testBindings PHP Метод

    public function testBindings()
    {
        R::nuke();
        $book = R::dispense('book');
        $book->content = NULL;
        //can we store a NULL?
        asrt(is_null($book->content), TRUE);
        R::store($book);
        //did we really store the NULL value ?
        $book = R::findOne('book', ' content IS NULL ');
        asrt($book instanceof OODBBean, TRUE);
        //still NULL, not empty STRING ?
        asrt(is_null($book->content), TRUE);
        $book->pages = 100;
        R::store($book);
        //did we save it once again as NULL?
        $book = R::findOne('book', ' content IS NULL ');
        asrt($book instanceof OODBBean, TRUE);
        asrt(is_null($book->content), TRUE);
        asrt(gettype($book->pages), 'string');
        $otherBook = R::dispense('book');
        $otherBook->pages = 99;
        //also if the column is VARCHAR-like?
        $otherBook->content = 'blah blah';
        R::store($otherBook);
        $book = R::findOne('book', ' content IS NULL ');
        asrt($book instanceof OODBBean, TRUE);
        asrt(is_null($book->content), TRUE);
        asrt(intval($book->pages), 100);
        //can we query not NULL as well?
        $book = R::findOne('book', ' content IS NOT NULL ');
        asrt($book instanceof OODBBean, TRUE);
        asrt(is_null($book->content), FALSE);
        asrt(intval($book->pages), 99);
        asrt($book->content, 'blah blah');
        //Can we bind NULL directly?
        $book->isGood = FALSE;
        //Is NULL the default? And... no confusion with boolean FALSE?
        R::store($book);
        $book = R::findOne('book', ' is_good IS NULL');
        asrt($book instanceof OODBBean, TRUE);
        asrt(is_null($book->content), TRUE);
        asrt(intval($book->pages), 100);
        $book = R::findOne('book', ' is_good = ?', array(0));
        asrt($book instanceof OODBBean, TRUE);
        asrt(is_null($book->content), FALSE);
        asrt(intval($book->pages), 99);
    }