require('dotenv').config();

const httpMocks = require('node-mocks-http');
const auth = require('../../middlewares/auth');
const jwt = require('jsonwebtoken');

jwt.verify = jest.fn();

let req, res, next;

beforeEach(() => {
    req = httpMocks.createRequest();
    res = httpMocks.createResponse();
    next = jest.fn();
});

describe('auth middleware', () => {
    beforeEach(() => {
        req.headers.auth = 'some_token';
        req.params.userId = 'some_user_id';
    });
    it('should return 401 to requests without a token', async () => {
        req.headers.auth = undefined;
        await auth(req, res, next);
        expect(res.statusCode).toBe(401);
    });
    it('should return 401 to requests with invalid tokens', async () => {
        req.headers.auth = 'not a valid token';
        // This is returning undefined too
        jest.mock('jsonwebtoken/verify', () => new Error());
        await auth(req, res, next);
        expect(res.statusCode).toBe(401);
    });
    it('should call next when everything is ok', async () => {
        req.headers.auth = 'rgfh4hs6hfh54sg46';
        jest.mock('jsonwebtoken/verify', (tokenHeader, secret) => {
            return jest.fn(() => ({ id: 'rgfh4hs6hfh54sg46' }));
        });
        await auth(req, res, next);
        expect(next).toBeCalled();
    });
});