public void Include_extension_method_is_noop_for_unimplemented_DbSet()
        {
            IQueryable <Product> set = new UnimplementedDbSet <Product>();

            Assert.Same(set, set.Include(p => p.Category));
        }
        public void Actual_Include_method_is_noop_for_unimplemented_DbSet()
        {
            var set = new UnimplementedDbSet <Product>();

            Assert.Same(set, set.Include(p => p.Category));
        }