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test: test carousel

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afc163 2018-05-25 16:03:27 +08:00 committed by 偏右
parent 076540c83e
commit b7b12b657c
1 changed files with 46 additions and 0 deletions
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46
components/carousel/__tests__/index.test.js
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@ -3,6 +3,14 @@ import { mount } from 'enzyme';
import Carousel from '..'; import Carousel from '..';
describe('Carousel', () => { describe('Carousel', () => {
beforeAll(() => {
jest.useFakeTimers();
});
afterAll(() => {
jest.useRealTimers();
});
it('should has innerSlider', () => { it('should has innerSlider', () => {
const wrapper = mount(<Carousel><div /></Carousel>); const wrapper = mount(<Carousel><div /></Carousel>);
const { innerSlider } = wrapper.instance(); const { innerSlider } = wrapper.instance();
@ -10,4 +18,42 @@ describe('Carousel', () => {
expect(innerSlider).toBe(innerSliderFromRefs); expect(innerSlider).toBe(innerSliderFromRefs);
expect(typeof innerSlider.slickNext).toBe('function'); expect(typeof innerSlider.slickNext).toBe('function');
}); });
it('should has prev, next and go function', () => {
const wrapper = mount(<Carousel><div>1</div><div>2</div><div>3</div></Carousel>);
const { prev, next, goTo } = wrapper.instance();
expect(typeof prev).toBe('function');
expect(typeof next).toBe('function');
expect(typeof goTo).toBe('function');
expect(wrapper.instance().slick.innerSlider.state.currentSlide).toBe(0);
wrapper.instance().goTo(2);
jest.runAllTimers();
expect(wrapper.instance().slick.innerSlider.state.currentSlide).toBe(2);
wrapper.instance().prev();
jest.runAllTimers();
expect(wrapper.instance().slick.innerSlider.state.currentSlide).toBe(1);
wrapper.instance().next();
jest.runAllTimers();
expect(wrapper.instance().slick.innerSlider.state.currentSlide).toBe(2);
});
it('should trigger autoPlay after window resize', async () => {
jest.useRealTimers();
const wrapper = mount(<Carousel autoplay><div>1</div><div>2</div><div>3</div></Carousel>);
const spy = jest.spyOn(wrapper.instance().slick.innerSlider, 'autoPlay');
window.resizeTo(1000);
expect(spy).not.toBeCalled();
await new Promise(resolve => setTimeout(resolve, 500));
expect(spy).toBeCalled();
});
it('cancel resize listener when unmount', async () => {
const wrapper = mount(<Carousel autoplay><div>1</div><div>2</div><div>3</div></Carousel>);
const onWindowResized = wrapper.instance().onWindowResized;
const spy = jest.spyOn(wrapper.instance().onWindowResized, 'cancel');
const spy2 = jest.spyOn(window, 'removeEventListener');
wrapper.unmount();
expect(spy).toBeCalled();
expect(spy2).toBeCalledWith('resize', onWindowResized);
});
}); });