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tests.js
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define(["pat-scroll-box", "pat-registry"], function (Pattern, registry) {
describe("pat-scroll-box", function () {
it("adds scroll classes when scrolling", function (done) {
// setup
document.body.setAttribute('class', 'pat-scroll-box');
document.body.setAttribute('style', 'height: 1000px');
let scrollbox = document.createElement('div');
scrollbox.setAttribute('class', 'pat-scroll-box');
scrollbox.setAttribute('style', 'overflow: auto; height: 200px');
let scrollbox_inner = document.createElement('div');
scrollbox_inner.setAttribute('style', 'height: 400px');
scrollbox.appendChild(scrollbox_inner);
document.body.appendChild(scrollbox);
registry.init();
// Pattern.init($(scrollbox));
// Pattern.init($(document.body));
// initial
console.log(scrollbox.classList);
console.log(document.body.classList);
expect(scrollbox.classList.contains('scroll-down')).toBe(false);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(true);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
scrollbox.scrolltop = 100;
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false); // 14016
scrollbox.scrolltop = 50;
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(false);
expect(scrollbox.classList.contains('scroll-up')).toBe(true);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
scrollbox.scrolltop = 0;
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(false);
expect(scrollbox.classList.contains('scroll-up')).toBe(true);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(true);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
scrollbox.scrolltop = 400;
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(true);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
// scrolling the body
// scrollbox state is retained
//
window.scrollTo(0, 100);
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(true);
// body
expect(document.body.classList.contains('scroll-down')).toBe(true);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(false);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
window.scrollTo(0, 50);
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(true);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(true);
expect(document.body.classList.contains('scroll-position-top')).toBe(false);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
window.scrollTo(0, 0);
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(true);
// body
expect(document.body.classList.contains('scroll-down')).toBe(false);
expect(document.body.classList.contains('scroll-up')).toBe(true);
expect(document.body.classList.contains('scroll-position-top')).toBe(true);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(false);
window.scrollTo(0, 400);
// scrollbox
expect(scrollbox.classList.contains('scroll-down')).toBe(true);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(true);
// body
expect(document.body.classList.contains('scroll-down')).toBe(true);
expect(document.body.classList.contains('scroll-up')).toBe(false);
expect(document.body.classList.contains('scroll-position-top')).toBe(false);
expect(document.body.classList.contains('scroll-position-bottom')).toBe(true);
done();
});
it("does not set classes when not scrollable", function (done) {
// setup
let scrollbox = document.createElement('div');
scrollbox.setAttribute('class', 'pat-scroll-box');
scrollbox.setAttribute('style', 'height: 200px'); // overflow not set, default = 'visible'
let scrollbox_inner = document.createElement('div');
scrollbox_inner.setAttribute('style', 'height: 400px');
scrollbox.appendChild(scrollbox_inner);
document.body.appendChild(scrollbox);
registry.scan(document.body);
// initial
expect(scrollbox.classList.contains('scroll-down')).toBe(false);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
scrollbox.scrolltop = 100;
expect(scrollbox.scrollTop).toBe(0); // cannot be scrolled
expect(scrollbox.classList.contains('scroll-down')).toBe(false);
expect(scrollbox.classList.contains('scroll-up')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-top')).toBe(false);
expect(scrollbox.classList.contains('scroll-position-bottom')).toBe(false);
done();
});
});
});