someGigService.specs.js

  beforeEach(()=> {
    httpClient = new mosica.HttpClient();
    matcher = new mosica.Matcher();
    gigService = new mosica.GigService(httpClient, matcher);

    httpClientStub = sinon.stub(httpClient, 'get').returns({
      then: function(resp){
        return resp({body: {response: someGigsByDay}});
      }
    });
  });
//...
    it('gets the gigs', () => {
      return gigService.retrieveNextGigs().then((gigsByDay) => {
        let gigs = gigsByDay[0].gigs;

        expect(gigs.length).to.be.equal(2);
        expect(gigs[0].title).to.be.equal('dead bronco');
        expect(gigs[1].title).to.be.equal('celtas cortos');
      });
    });
//...
    it('gets an existent gig', () => {
      return gigService.retrieveAGig(1).then((gig) => {
        expect(gig.title).to.be.equal('dead bronco');
      });
    });
//...
    it('find the gigs normalizing accents', () => {
      return gigService.searchGigs('lopez').then((gigs) => {
        expect(gigs.length).to.be.equal(1);
        expect(gigs[0].title).to.be.equal('dead bronco');
      });
    });