我有以下测试:
import React from 'react';
import { configure, shallow } from 'enzyme'
import Adapter from 'enzyme-adapter-react-16';
configure({ adapter: new Adapter() });
import ListAdapter from './ListAdapter'
import TweetCard from './TweetCard'
describe('<ListAdapter />', () => {
let wrapper, props
beforeEach(() => {
props = {
data: [{
user: { profile_image_url: 'someimage.png', name: 'Some name' },
created_at: 'Sat Feb 02 19:06:09 +0000 2019',
text: 'Hello word'
}],
};
wrapper = shallow(<ListAdapter {...props} />);
})
it('renders without crashing', () => {
expect(wrapper).toBeDefined();
});
it('renders one link anchor element', () => {
expect(wrapper.find('button')).toHaveLength(1);
expect(wrapper.find(TweetCard)).toHaveLength(0);
});
it('check anchor tag text when it gets data and than try to set props', () => {
expect(wrapper.find('button').at(0).text()).toEqual('You have 1 tweet.');
var { data } = wrapper.instance().props
data = [data].concat({
user: { profile_image_url: 'someimage.png', name: 'Some name' },
created_at: 'Sat Feb 02 19:06:09 +0000 2019',
text: 'Hello word'
})
wrapper = wrapper.setProps({ data })
expect(wrapper.find('button').at(0).text()).toEqual('You have 2 tweets.');
expect(wrapper.instance().props.data).toHaveLength(2)
// UPDATED TEST TO GET 3 TWEETS
data = wrapper.instance().props
data = [data].concat({
user: { profile_image_url: 'someimage.png', name: 'Some name' },
created_at: 'Sat Feb 02 19:06:09 +0000 2019',
text: 'Hello word'
})
wrapper = wrapper.setProps({ data })
expect(wrapper.find('button').at(0).text()).toEqual('You have 3 tweets.');
expect(wrapper.instance().props.data).toHaveLength(3)
});
it('check state initialization defaults', () => {
// we have one props getting passed so it will be 1
expect(wrapper.state('data_count')).toEqual(1);
});
it('test onClick event of button', () => {
// Try to click and than we should have toggleFlag be true and data_count be 0
wrapper.find('button').simulate('click')
expect(wrapper.state('data_count')).toEqual(0);
expect(wrapper.find(TweetCard)).toHaveLength(1);
expect(wrapper.find('button')).toHaveLength(0);
});
})
并且,在测试中显示:在获取数据时检查 anchor 标记文本,然后尝试设置 Prop
我想在添加第二个 Prop 后添加更多 Prop ,但我尝试了同样的方式对于第三个 Prop ,它根本不影响! enzyme 有时真的很棒,有时只是让它变得简单。我知道 setProps 也是一个异步调用。
有什么吗?
谢谢
最佳答案
实际上不需要再次重新评估wrapper
。
wrapper.setProps({ data })
而不是 wrapper =wrapper.setProps({ data })
你写得对,但是你的data
已经是数组了,然后你做了[data].concat
而不是data.concat
。但我不确定这就是问题所在。
关于reactjs - 如何在enzyme中调用多个setProps?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54513361/