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19 lines
554 B
JavaScript
19 lines
554 B
JavaScript
import React from 'react';
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import { mount } from 'enzyme';
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import BackTop from '..';
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jest.useFakeTimers();
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describe('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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document.documentElement.scrollTop = 400;
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// trigger scroll manually
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wrapper.instance().handleScroll();
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jest.runAllTimers();
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wrapper.find('.ant-back-top').simulate('click');
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jest.runAllTimers();
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expect(Math.round(document.documentElement.scrollTop)).toBe(0);
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});
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});
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