public void Add_Many()
        {
            // Arrange
            var movies = MovieEntityMock.Movies(5);

            // Act
            _repository.Add(movies);
            var result = _repository.SaveChanges();

            // Assert
            Assert.True(result == 5);
        }
        public async Task Add_Many_Async()
        {
            // Arrange
            var movies = MovieEntityMock.Movies(5);

            // Act
            await _repository.AddAsync(movies);

            var result = await _repository.SaveChangesAsync();

            // Assert
            Assert.True(result == 5);
        }