我如何 运行 在 authcontext() 上使用 jest/RTL 进行测试

Question

我正在尝试在用户登录正确信息时测试我的代码的过程；但是，我遇到了一个错误，指出 authContext 被视为未定义。我是否正确测试了这个？我该如何解决这个错误？

错误

    TypeError: Cannot read property 'setUser' of undefined

      25 |           const { isAuthenticated, user } = data;
      26 |           if (isAuthenticated) {
    > 27 |             authContext.setUser(user);

loginForm.test.js

    test('user input correct login information', () => {
        const { getByTestId, getByText } = render(<LoginForm />);
        const resInfo = {username: 'Bpun1p'}
        const resp = {isAuthenticated: true, user: resInfo}
        AuthService.login.mockResolvedValue(resp)

        fireEvent.change(getByTestId('Username'), {target: {value: "Bpun1p"}})
        fireEvent.change(getByTestId('Password'), {target: {value: "Guy123su"}})

        fireEvent.click(getByTestId('LoginBtn'));
    });

loginForm.js

import React, { useContext, useState } from 'react';
import { useHistory } from 'react-router-dom';
import SocialSignUp from './SocialSignUp';
import { AuthContext } from '../../context/AuthContext';
import AuthService from '../../service/AuthService';

function LoginForm() {
  const [username, setUsername] = useState({ username: '' });
  const [isValidEntry, setValidEntry] = useState(true);

  const authContext = useContext(AuthContext);

  const history = useHistory();

  const onChange = (event) => {
    setUsername({ ...username, [event.target.name]: event.target.value });
  };

  const onSubmit = (event) => {
    event.preventDefault();
    if (username.username !== '') {
      AuthService.login(username)
        .then((data) => {
          console.log(data);
          const { isAuthenticated, user } = data;
          if (isAuthenticated) {
            authContext.setUser(user);
            authContext.setIsAuthenticated(isAuthenticated);
            history.push('/profile/global');
          } else setValidEntry(false);
        });
    } else setValidEntry(false);
  };

Answer 1

在测试 <LoginForm/> 中替换为 <AuthContext.Provider> <LoginForm/><AuthContext.Provider> 并为 运行 应用

传递 AuthContext.Provider 所需的道具