public void AdvertisementsList_CanBeRetrieved()
        {
            context.Advertisements.Add(new Advertisement {
                Name = "Advertisement1", Description = "An advertisement for a job.", Active = true, JobPositionId = this.jobPositionId
            });
            context.Advertisements.Add(new Advertisement {
                Name = "Advertisement2", Description = "An advertisement for a job.", Active = true, JobPositionId = this.jobPositionId
            });
            context.SaveChanges();
            var service = new AdvertisementService(context);

            var advertisements = service.GetAdvertisementsList();

            Assert.AreEqual(2, advertisements.Count);
        }