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70 lines
2.4 KiB
70 lines
2.4 KiB
import React from 'react';
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import { mount } from 'enzyme';
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import { sleep } from '../../../tests/utils';
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import mountTest from '../../../tests/shared/mountTest';
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import rtlTest from '../../../tests/shared/rtlTest';
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import BackTop from '..';
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describe('BackTop', () => {
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mountTest(BackTop);
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rtlTest(BackTop);
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it('should scroll to top after click it', async () => {
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const wrapper = mount(<BackTop visibilityHeight={-1} />);
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const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((x, y) => {
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window.scrollY = y;
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window.pageYOffset = y;
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document.documentElement.scrollTop = y;
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});
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window.scrollTo(0, 400);
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expect(document.documentElement.scrollTop).toBe(400);
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// trigger scroll manually
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wrapper.instance().handleScroll();
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await sleep();
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wrapper.find('.ant-back-top').simulate('click');
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await sleep(500);
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expect(document.documentElement.scrollTop).toBe(0);
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scrollToSpy.mockRestore();
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});
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it('support onClick', async () => {
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const onClick = jest.fn();
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const wrapper = mount(<BackTop onClick={onClick} visibilityHeight={-1} />);
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const scrollToSpy = jest.spyOn(window, 'scrollTo').mockImplementation((x, y) => {
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window.scrollY = y;
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window.pageYOffset = y;
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});
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document.dispatchEvent(new Event('scroll'));
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window.scrollTo(0, 400);
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// trigger scroll manually
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wrapper.instance().handleScroll();
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await sleep();
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wrapper.find('.ant-back-top').simulate('click');
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expect(onClick).toHaveBeenCalled();
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scrollToSpy.mockRestore();
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});
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it('should be able to update target', async () => {
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const wrapper = mount(<BackTop />);
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wrapper.instance().handleScroll = jest.fn();
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const container = document.createElement('div');
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wrapper.setProps({ target: () => container });
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expect(wrapper.instance().handleScroll).toHaveBeenLastCalledWith({
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target: container,
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});
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container.dispatchEvent(new Event('scroll'));
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expect(wrapper.instance().handleScroll).toHaveBeenLastCalledWith(
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expect.objectContaining({
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currentTarget: container,
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target: container,
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}),
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);
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});
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it('invalid target', async () => {
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const onClick = jest.fn();
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const wrapper = mount(<BackTop onClick={onClick} target={() => ({ documentElement: {} })} />);
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wrapper.find('.ant-back-top').simulate('click');
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expect(onClick).toHaveBeenCalled();
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});
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});
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