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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', () => {
beforeEach(() => {
jest.useFakeTimers();
});
afterEach(() => {
jest.useRealTimers();
});
mountTest(BackTop);
rtlTest(BackTop);
it('should scroll to top after click it', async () => {
const { container } = render(<BackTop />);
const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((_, y) => {
window.scrollY = y;
window.pageYOffset = y;
document.documentElement.scrollTop = y;
});
window.scrollTo(0, 400);
await waitFakeTimer();
expect(document.documentElement.scrollTop).toBe(400);
fireEvent.click(container.querySelector<HTMLDivElement>('.ant-back-top')!);
await waitFakeTimer();
expect(document.documentElement.scrollTop).toBe(0);
scrollToSpy.mockRestore();
});
it('support onClick', () => {
const onClick = jest.fn();
const { container } = render(<BackTop onClick={onClick} visibilityHeight={0} />);
fireEvent.click(container.querySelector<HTMLDivElement>('.ant-back-top')!);
expect(onClick).toHaveBeenCalled();
});
it('invalid target', () => {
const onClick = jest.fn();
const { container } = render(<BackTop onClick={onClick} target={undefined} />);
fireEvent.click(container.querySelector<HTMLDivElement>('.ant-back-top')!);
expect(onClick).toHaveBeenCalled();
});
it('should console Error', () => {
const errSpy = jest.spyOn(console, 'error').mockImplementation(() => {});
render(<BackTop />);
expect(errSpy).toHaveBeenCalledWith(
'Warning: [antd: BackTop] `BackTop` is deprecated. Please use `FloatButton.BackTop` instead.',
);
errSpy.mockRestore();
});
});
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