getArticleTest.txt

import chai from 'chai';
import chaiHttp from 'chai-http';
import app from '../../../server';
import data from '../model/ariticles';

describe('Get no article', () => {
  it('should not get an article that does not exit', async () => {
    const res = await chai.request(app)
      .get('/api/v1/articles/234');
    expect(res.body.status).to.be.equal(404);
    expect(res.body.message).to.be.deep.equals('Article not found');
  });
});

This test is for a GET request. It tests for an article with unknown Id and ensures the appropriate status code is displayed.