Test driven development.js

import chai from ('chai').should;
import server from '../../app';
import chaiHttp from 'chai-http';

chai.use(chaiHttp);

 describe('it should be able to apdate the article', () => {
      it('should return the 201 status for success update', (done) => {
          const article = {
            title:"kacyiru",
            body:"telecom house"
          }
        chai.request(server)
            .put('/api/v1/article/1')
            .send(article)
            .end((err, res) => {
                  res.should.have.status(201);
              done();
            });
      });

  });

Good job, man!!

But here are one thing you need to change:
1. describe('it should be able to update an article', (req, res) => { you don't need res and req as parameters of the callback in Describe.

• You have only tested the status code. you should also test values of values that are returned.