fgo*_*lez 11 javascript unit-testing jestjs axios
我刚刚发现了这种使用 jest 模拟 axios 的有用方法,但是,如果我多次调用具有不同 url 的 axios,我如何根据 url 指定要返回的 url 和值?有没有办法在不使用 3rd 方库的情况下做到这一点?
谢谢
// users.test.js
import axios from 'axios';
import Users from './users';
jest.mock('axios');
test('should fetch users', () => {
const users = [{name: 'Bob'}];
const resp = {data: users};
axios.get.mockResolvedValue(resp);
// or you could use the following depending on your use case:
// axios.get.mockImplementation(() => Promise.resolve(resp))
return Users.all().then(data => expect(data).toEqual(users));
});
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shk*_*per 19
您可以在.mockImplementation()回调中处理多个条件:
jest.mock('axios')
axios.get.mockImplementation((url) => {
switch (url) {
case '/users.json':
return Promise.resolve({data: [{name: 'Bob', items: []}]})
case '/items.json':
return Promise.resolve({data: [{id: 1}, {id: 2}]})
default:
return Promise.reject(new Error('not found'))
}
})
test('should fetch users', () => {
return axios.get('/users.json').then(users => expect(users).toEqual({data: [{name: 'Bob', items: []}]}))
})
test('should fetch items', () => {
return axios.get('/items.json').then(items => expect(items).toEqual({data: [{id: 1}, {id: 2}]}))
})
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