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/ 4 Years ago, tue, october 27, 2020, 12:00:00
In my application, I have a middleware to check for a token in a req in order to access private routes:
const config = require('../utils/config');
const jwt = require('jsonwebtoken');
module.exports = function (req, res, next) {
let token = req.header('x-auth-token');
if (!token) {
return res.status(401).json({ msg: 'No token. Authorization DENIED.' });
}
try {
let decoded = jwt.verify(token, config.JWTSECRET);
req.user = decoded.user;
next();
} catch (err) {
return res.status(401).json({ msg: 'Token is invalid.' });
}
};
In order to send a req with the correct token in my program's Redux actions, I call the following function, setAuthToken(), to set the auth token:
import axios from 'axios';
const setAuthToken = token => {
if (token) {
axios.defaults.headers.common['x-auth-token'] = token;
} else {
delete axios.defaults.headers.common['x-auth-token'];
}
};
export default setAuthToken;
My Redux action using axios and the setAuthToken() function:
export const addPost = (formData) => async (dispatch) => {
try {
//set the token as the header to gain access to the protected route POST /api/posts
if (localStorage.token) {
setAuthToken(localStorage.token);
}
const config = {
headers: {
'Content-Type': 'application/json',
},
};
const res = await axios.post('/api/posts', formData, config);
// ...
} catch (err) {
// ...
}
};
How can I write a test to test setAuthToken()? The following is my attempt:
import axios from 'axios';
import setAuthToken from '../../src/utils/setAuthToken';
describe('setAuthToken utility function.', () => {
test('Sets the axios header, x-auth-token, with a token.', () => {
let token = 'test token';
setAuthToken(token);
expect(axios.defaults.headers.common['x-auth-token']).toBe('test token');
});
});
The following is the error I get:
TypeError: Cannot read property 'headers' of undefined
Looking up this error, it sounds like it is because there is no req in my test. If that is the case, how can I re-write my test to send a req? If not, what am I doing wrong?
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