createArticle.test.js

describe('/POST /api/articles', () => {
  const data = {
    title: "How to train your dragon",
    description: "Ever wonder how?",
    body: "You have to believe",
    tagList: ["reactjs", "angularjs", "dragons"]
  };
  it('should create a new article if required fields are entered', (done) => {
    chai.request(app)
      .get('/api/articles/')
      .set('Authorization', 'Bearer theusersjwtoken')
      .send(data)
      .end((err, res) => {
        res.should.have.status(201);
        res.body.should.be.a('object');
        res.body.should.have.property('message').to.equals('Your request has been created successfully');
        done();
      });
  });
});

Nice one! You did a good coverage on the test case.

Good approach! You checked if the response object contains a success message, that's good practice keep it up

Great Job!, You covered all test cases for the POST request, Keep it up.