This test is for a post REST API Endpoint. I assumed a mock data that hold objects of correct and incorrect input from a client. The response code is tested in each case. I ensured that the test captures the actual purpose of the endpoint (a push into the Articles model), by testing the new length of the Articles Model.

sampleTDD.js

import chai from 'chai';
import chaiHttp from 'chai-http';
import app from '../../app';
Import articles from ‘../Models/articles’;
Import { correctArticle, invalidArticleTitle, invalidArticleTitleLength,
invalidArticleContent, invalidArticleLength
} from ‘./articleMockData’;

describe(‘TEST FOR POST Article to the Articles model’, () => {
  it(‘should return 201 for success’, (done) => {
    const updatedArticleLength = articles.length + 1;
    chai.request(app)
    .post(‘/api/v1/articles’)
    .send(correctArticle)
    .end((error, response) => {
      expect(response).to.have.status(201);
      expect(articles).to.have.length(updatedArticleLength);
      expect(response.body.message).to.equal(‘Article posted successfully!’);
      done();
    })
  })
  it('Should return failed status for incorrect input', (done) => {
    chai.request(app)
      .post('/api/v1/articles')
      .send(invalidArticleTitle)
      done()
      .send(invalidArticleTitleLength)
      done()
      .send(invalidArticleContent)
      done()
      .send(invalidArticleLength)
      done()
      .end((error, response) => {
        expect(response).to.have.status(400);
        expect(response.body.status).to.equal(‘Fail’);
        done();
    });
  });
});

Hi Marcus, I like how you implemented using your mock data it's pretty cool. However, I can see you have a couple of .send statements, isn't possible to just have one and pass all the required variables in it?

Thanks for the feedback. I was actually trying to test different "fail cases" at a go. The endpoint would be structured to receive all response messages in an object and send them at the same time.

Nice implementation Marcus

@marcdomain nice implementation. You should, however, change the extension of the gist from .txt to .js

Thanks for the observation

Phenomenal execution, @marcdomain. All grounds look covered to me. 💪