request test

request_test.js

'use strict';
import nock from 'nock';
import chai from 'chai';
import request from 'request'

const expect = chai.expect;

const tax = {
  calculate: (subtotal, state, done) => {
    if (state !== 'CA') {
      return done({ amount: 0 });
    }

    request.post(
      {
        url: 'https://some-tax-service.com/request',
        method: 'POST',
        json: {
          subtotal: subtotal,
        },
      },
      (error, response, body) => {
        done(body);
      }
    );
  },
};

describe('tax', () => {
  it('calculate() should send the subtotal in the request', done => {
    nock('https://some-tax-service.com')
      .post('/request')
      .reply(200, (uri, requestBody) => {
        return {
          amount: requestBody.subtotal * 0.1,
        };
      });

    tax.calculate(100, 'CA', taxDetails => {
      expect(taxDetails).to.eql({ amount: 10 });
      done();
    });
  });
});