RedUNIT\Base\Traverse::testTraversalWithAlias PHP Метод

    public function testTraversalWithAlias()
    {
        R::nuke();
        $book = R::dispense('book');
        $cats = R::dispense('category', 3);
        $cats[0]->gname = 'SF';
        $cats[1]->gname = 'Fantasy';
        $cats[2]->gname = 'Horror';
        $book->genre = $cats[0];
        $book->name = 'Space Story';
        $cats[0]->genre = $cats[1];
        $cats[2]->genre = $cats[1];
        R::store($book);
        $book2 = R::dispense('book');
        $book2->genre = $cats[2];
        $book2->name = 'Ghost Story';
        R::store($book2);
        $fantasy = R::load('category', $cats[1]->id);
        $cats = array();
        $book = $book->fresh();
        $book->fetchAs('category')->traverse('genre', function ($cat) use(&$cats) {
            $cats[] = $cat->gname;
        });
        asrt(implode(',', $cats), 'SF,Fantasy');
        $catList = array();
        $fantasy->alias('genre')->with(' ORDER BY gname ASC ')->traverse('ownCategory', function ($cat) use(&$catList) {
            $catList[] = $cat->gname;
        });
        asrt(implode(',', $catList), 'Horror,SF');
    }