import React from 'react';
import BackTop from '..';
import mountTest from '../../../tests/shared/mountTest';
import rtlTest from '../../../tests/shared/rtlTest';
import { fireEvent, render, waitFakeTimer } from '../../../tests/utils';
describe('BackTop', () => {
mountTest(BackTop);
rtlTest(BackTop);
it('should scroll to top after click it', async () => {
jest.useFakeTimers();
const { container } = render();
const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((_, y) => {
window.scrollY = y;
window.pageYOffset = y;
document.documentElement.scrollTop = y;
});
window.scrollTo(0, 400);
expect(document.documentElement.scrollTop).toBe(400);
fireEvent.click(container.querySelector('.ant-back-top')!);
await waitFakeTimer();
expect(document.documentElement.scrollTop).toBe(0);
scrollToSpy.mockRestore();
jest.clearAllTimers();
jest.useRealTimers();
});
it('support onClick', async () => {
const onClick = jest.fn();
const { container } = render();
const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((_, y) => {
window.scrollY = y;
window.pageYOffset = y;
});
document.dispatchEvent(new Event('scroll'));
window.scrollTo(0, 400);
fireEvent.click(container.querySelector('.ant-back-top')!);
expect(onClick).toHaveBeenCalled();
scrollToSpy.mockRestore();
});
it('invalid target', async () => {
const onClick = jest.fn();
const { container } = render();
fireEvent.click(container.querySelector('.ant-back-top')!);
expect(onClick).toHaveBeenCalled();
});
});