public async Task SaveChanges_ArrayOfThumbnailOptions_NewThumbnailOptionsSaved()
        {
            var optionEntities = ThumbnailOptionEntitesDataSource.ToList();

            var mock = new Mock <IThumbnailRepository>();

            mock.SetupGet(x => x.UnitOfWork).Returns(new Mock <IUnitOfWork>().Object);
            mock.Setup(x => x.Add(It.IsAny <ThumbnailOptionEntity>()))
            .Callback((ThumbnailOptionEntity entity) =>
            {
                optionEntities.Add(entity);
            });
            mock.Setup(r => r.GetThumbnailOptionsByIdsAsync(It.IsAny <string[]>()).Result)
            .Returns((string[] ids) =>
            {
                return(optionEntities.Where(t => ids.Contains(t.Id)).ToArray());
            });

            var sut = new ThumbnailOptionService(() => mock.Object);
            await sut.SaveOrUpdateAsync(new[]
            {
                new ThumbnailOption()
                {
                    Id = "NewOptionId", Name = "New Option name"
                }
            });

            Assert.Contains(optionEntities, x => x.Id == "NewOptionId");
        }
        public async Task SaveChanges_ArrayOfThumbnailOptions_ThumbnailOptionsUpdatedAsync()
        {
            var optionEntities = ThumbnailOptionEntitesDataSource.ToArray();
            var options        = ThumbnailOptionDataSource.ToArray();

            var mock = new Mock <IThumbnailRepository>();

            mock.SetupGet(x => x.UnitOfWork).Returns(new Mock <IUnitOfWork>().Object);
            mock.Setup(r => r.GetThumbnailOptionsByIdsAsync(It.IsAny <string[]>()).Result)
            .Returns((string[] ids) =>
            {
                var result = optionEntities.Where(t => ids.Contains(t.Id)).ToArray();
                return(result);
            });

            var sut = new ThumbnailOptionService(() => mock.Object);
            await sut.SaveOrUpdateAsync(options);

            Assert.Contains(optionEntities, o => o.Name == "New Name");
        }