Testing an HTTP client: Part II

client.js

var request = require('superagent');

/**
 * @constructor
 */

module.exports = Client;

function Client(api_key) {
  this.params = {};
  this.params.api_key = api_key;
  this.params.format = 'json';
  this.params.nojsoncallback = 1;
}

Client.prototype = Object.create(null);

Client.prototype.search = function (text, done) {
  request('GET', 'https://api.flickr.com/services/rest')
  .query('method=flickr.photos.search')
  .query('text=' + text)
  .query(this.params)
  .end(done);
};

test.js

var Client = require('./client');
var request = require('superagent');
var assert = require('assert');
var sinon = require('sinon');

describe('Client', function () {

  it('calls flickr.photos.search', function (done) {
    var subject = new Client(process.env.API_KEY);

    var stub = sinon.stub(require('superagent').Request.prototype);

    stub.query.returnsThis();

    stub.end.yieldsAsync(null, { statusCode: 200, body: { stat: 'ok' }});

    subject.search('coffee', function (err, res) {
      assert.ifError(err);
      assert.equal(res.statusCode, 200);
      assert.equal(res.body.stat, 'ok');
      done();
    });
  });

});

Thanks