Rspecでhave_receivedのテストにハマった~subjectはit内で必ず呼び出さなければいけない~ - Qiita

let_it_be(:user) { create(:user) } describe "#user_update" do subject{ user.user_update } before do allow(user).to receive(:update).whith(params: anything) end it { expect(user).to have_received(:update).with(params: anything).once } end