Validation tests to add for todo application, found here: https://github.com/jkeam/TodoList

validation-tests.cs

// Snippet to add to TodoListTest/Tests.cs

    [Test]
    public void NotAllowCreateShortTodo()
    {
        using (var scope = testContext.Services.CreateScope())
        {
            var service = scope.ServiceProvider.GetRequiredService<IDbContextFactory<DatabaseContext>>();
            using (var context = service.CreateDbContext())
            {
                Assert.AreEqual(1, context.Todos.ToList().Count);
                var component = testContext.RenderComponent<TodoList.Pages.Todos>();
                var inputField = component.Find("input");
                inputField.Change("1");
                component.Find("button[type=submit].new-todo").Click();

                var todos = context.Todos.ToList();
                Assert.AreEqual(1, todos.Count);
            }
        }
    }

    [Test]
    public void NotAllowCreateLongTodo()
    {
        using (var scope = testContext.Services.CreateScope())
        {
            var service = scope.ServiceProvider.GetRequiredService<IDbContextFactory<DatabaseContext>>();
            using (var context = service.CreateDbContext())
            {
                Assert.AreEqual(1, context.Todos.ToList().Count);
                var component = testContext.RenderComponent<TodoList.Pages.Todos>();
                var inputField = component.Find("input");
                inputField.Change("012345678901234567890123456789012345678901234567890123456789");
                component.Find("button[type=submit].new-todo").Click();

                var todos = context.Todos.ToList();
                Assert.AreEqual(1, todos.Count);
            }
        }
    }