为在javascript中使用jwt标记的方法编写单元测试

const jwt = require('jsonwebtoken');
const { expect } = require('chai');
const request = require('supertest');
const app = require('../app');

describe('JWT Token Methods', () => {
  let token;

  before(() => {
    // 在测试套件执行前准备好测试所需的数据
    const payload = { id: 1, username: 'testuser' };
    token = jwt.sign(payload, 'secretKey');
  });

  it('should verify a valid JWT token', () => {
    const decoded = jwt.verify(token, 'secretKey');
    expect(decoded.id).to.equal(1);
    expect(decoded.username).to.equal('testuser');
  });

  it('should throw an error for an invalid JWT token', () => {
    expect(() => jwt.verify('invalidToken', 'secretKey')).to.throw('invalid signature');
  });

  it('should throw an error for an expired JWT token', () => {
    const expiredToken = jwt.sign({ id: 1, username: 'testuser' }, 'secretKey', { expiresIn: '1ms' });
    setTimeout(() => {
      expect(() => jwt.verify(expiredToken, 'secretKey')).to.throw('jwt expired');
    }, 10);
  });

  it('should authenticate a request with a valid JWT token', (done) => {
    request(app)
      .get('/protected')
      .set('Authorization', `Bearer ${token}`)
      .expect(200)
      .end((err, res) => {
        if (err) return done(err);
        expect(res.body.message).to.equal('Authenticated');
        done();
      });
  });
});