sample.js

  describe('cohorts index method test', function() {
    var req = httpMocks.createRequest();
    var res = httpMocks.createResponse();
    cohortController.index(req, res);
    it('should display all cohorts in the database', function(done) {
      var data = JSON.parse(res._getData());
      data.length.should.equal(3);
      res.statusCode.should.equal(200);
      done();
    });

    var hiddenReq = httpMocks.createRequest({
      query: {
        hidden: true
      }
    });
    var hiddenRes = httpMocks.createResponse();
    cohortController.index(hiddenReq, hiddenRes);
    it('should display all cohorts where hidden field value is true', function(done) {
      var data = JSON.parse(hiddenRes._getData());
      data.length.should.equal(2);
      hiddenRes.statusCode.should.equal(200);
      done();
    });

    var invalidReq = httpMocks.createRequest({
      query: {
        hidden: 1
      }
    });
    var invalidRes = httpMocks.createResponse();
    cohortController.index(invalidReq, invalidRes);
    it('should return 500 status for invalid query parameter', function(done) {
      invalidRes.statusCode.should.equal(500);
      done();
    });
  });