public void ShouldRetrieveAllPictures()
        {
            var mockStorage = new Mock<IStorageContext>();
            mockStorage.Setup(s => s.Query<Picture>(StorageAccountConfiguration.PicturesTable)).Returns(() =>
                    {
                        var result = new List<Picture>();
                        result.Add(new Picture());
                        result.Add(new Picture());
                        return result.AsQueryable();
                    });

            var repository = new PictureRepository(mockStorage.Object);
            var pictures = repository.GetAll();

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