public void Should_Delete_Task()
        {
            //Arrange
            var defaultTask = UsingDbContext(ctx => ctx.Tasks.FirstOrDefault());

            //Act
            _taskAppService.DeleteTask(defaultTask.Id);

            //Assert

            var task = UsingDbContext(ctx => ctx.Tasks.FirstOrDefault(t => t.Id == defaultTask.Id));

            task.ShouldBeNull();
        }