require 'rails_helper' RSpec.describe Category, type: :model do # 生成順でupdated_atが変わるテイです。 # updated_atはこれから省略します create(:category, id: 1, name: "category 1", display_order: 2, updated_at: Time.current + 1.days) create(:category, id: 2, name: "category 2", display_order: 1, updated_at: Time.current + 2.days) create(:category, id: 3, name: "category 3", display_order: 1, updated_at: Time.current + 3