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import { waitFakeTimer } from '../../../tests/utils';
import scrollTo from '../scrollTo';
describe('Test ScrollTo function', () => {
const dateNowMock = jest.spyOn(Date, 'now');
beforeAll(() => {
jest.useFakeTimers();
});
beforeEach(() => {
dateNowMock.mockReturnValueOnce(0).mockReturnValueOnce(1000);
});
afterAll(() => {
jest.useRealTimers();
});
afterEach(() => {
jest.clearAllTimers();
dateNowMock.mockClear();
});
it('test scrollTo', async () => {
const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((_, y) => {
window.scrollY = y;
window.pageYOffset = y;
});
scrollTo(1000);
await waitFakeTimer();
expect(window.pageYOffset).toBe(1000);
scrollToSpy.mockRestore();
});
it('test callback - option', async () => {
const cbMock = jest.fn();
scrollTo(1000, {
callback: cbMock,
});
await waitFakeTimer();
expect(cbMock).toHaveBeenCalledTimes(1);
});
it('test getContainer - option', async () => {
const div = document.createElement('div');
scrollTo(1000, {
getContainer: () => div,
});
await waitFakeTimer();
expect(div.scrollTop).toBe(1000);
});
it('test getContainer document - option', async () => {
scrollTo(1000, {
getContainer: () => document,
});
await waitFakeTimer();
expect(document.documentElement.scrollTop).toBe(1000);
});
it('test duration - option', async () => {
scrollTo(1000, {
duration: 1100,
getContainer: () => document,
});
await waitFakeTimer();
expect(document.documentElement.scrollTop).toBe(1000);
});
});
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