jQuery(document).ready(function () {
    jQuery('.testislider').slick({
        infinite: true,
        slidesToShow: 3,
        slidesToScroll: 1,
        centerMode: true,
        focusOnSelect: true,
        dots: false,
        nav: false,
        arrows: false,
        responsive: [
            {
              breakpoint: 1200,
              settings: {
                slidesToShow: 2,
                slidesToScroll: 2,
              }
            },
            {
              breakpoint: 768,
              settings: {
                slidesToShow: 1,
                slidesToScroll: 1
              }
            }
        ]
    });

    jQuery('.testislider').on('wheel', function(e) {
        e.preventDefault();
      
        if (e.originalEvent.deltaY < 0) {
          jQuery(this).slick('slickNext');
        } else {
          jQuery(this).slick('slickPrev');
        }
    });
});