public void Should_show_each_post_with_most_recent_first_using_sequences()
        {
            var olderPost = new Post { DateTime = new DateTime(2010, 1, 1) };
            var newerPost = new Post { DateTime = new DateTime(2010, 1, 2) };
            var posts = new List<Post> { newerPost, olderPost };

            var mockView = new Mock<BlogView>();

            using (Sequence.Create())
            {
            mockView.Setup(v => v.ShowPost(newerPost)).InSequence();
            mockView.Setup(v => v.ShowPost(olderPost)).InSequence();

            new BlogPresenter(mockView.Object).Show(posts);
            }
        }
        public void Should_show_each_post_once_with_most_recent_first()
        {
            var olderPost = new Post { DateTime = new DateTime(2010, 1, 1) };
            var newerPost = new Post { DateTime = new DateTime(2010, 1, 2) };
            var posts = new List<Post> { newerPost, olderPost };
            var mockView = new Mock<BlogView>();

            var viewOrder = 0;

            mockView.Setup(v => v.ShowPost(newerPost)).Callback(() => Assert.That(viewOrder++, Is.EqualTo(0)));
            mockView.Setup(v => v.ShowPost(olderPost)).Callback(() => Assert.That(viewOrder++, Is.EqualTo(1)));

            new BlogPresenter(mockView.Object).Show(posts);

            mockView.Verify(v => v.ShowPost(newerPost), Times.Once());
            mockView.Verify(v => v.ShowPost(olderPost), Times.Once());
        }