mocha-watch+nock.js

const chai = require('chai');
const chaiHttp = require('chai-http');
const nock = require('nock');
const axios = require('axios');

chai.use(chaiHttp);

const { expect, request } = chai;

class Client {
  async uploadDocs(doc) {
    const response = await axios.get('http://localhost/');
    return Promise.resolve(response.data);
  }
}

describe('Client', () => {
  beforeEach(() => nock.cleanAll());

  it('should #uploadDocs', async () => {
    const scope = nock(/localhost/).get('/').reply(200, {success: true});
    const client = new Client();
    const response = await client.uploadDocs('new.doc');

    expect(response).to.be.an('object');
    expect(response).to.have.property('success', true);
  });
});