rspecで例外が起きたことを確認する - Qiita

class Cat < ApplicationRecord validates :todays_foods, presence: true def sing! sing_a_song! ensure say_hello end def say_hello 'にゃーん' end def sing_a_song! if todays_foods.empty? raise お腹が空いてたらエラー return end 'にゃにゃにゃーん！' end end describe '#sing!' do context 'with exception error,' do let!(:cat) do cat = build(:cat, name: 'お腹すいた猫', todays_foods: 0) cat.save(validate: false) # validatesを無効にして作成。 cat