public async Task OnGetAsync_PopulatesThePageModel_WithAListOfTodoItems()
        {
            // Arrange
            var optionsBuilder = new DbContextOptionsBuilder <BetterDoDbContext>()
                                 .UseInMemoryDatabase("InMemoryDb");

            #region snippet1
            var mockAppDbContext = new Mock <BetterDoDbContext>(optionsBuilder.Options);
            var expectedMessages = BetterDoDbContext.GetSeedingTodoItems();
            mockAppDbContext.Setup(
                db => db.GetTodoItemsAsync()).Returns(Task.FromResult(expectedMessages));
            var pageModel = new IndexModel(mockAppDbContext.Object);
            #endregion

            #region snippet2
            // Act
            await pageModel.OnGetAsync();

            #endregion

            #region snippet3
            // Assert
            var actualMessages = Assert.IsAssignableFrom <List <TodoItem> >(pageModel.TodoItems);
            Assert.Equal(
                expectedMessages.OrderBy(m => m.ID).Select(m => m.Title),
                actualMessages.OrderBy(m => m.ID).Select(m => m.Title));
            #endregion
        }
 public IndexModel(BetterDo.Data.BetterDoDbContext context)
 {
     _context = context;
 }