request_destroy_service_spec.rb

RSpec.describe RequestDestroyService, type: :service do
  describe '#call' do
    subject { described_class.new(request_id: request_id).call }
    let(:request_id) { request.id }
    let(:request) { create(:request) }

    it 'should return an instance of itself' do
      expect(subject).to be_a_kind_of(RequestDestroyService)
    end

    context 'when the request_id matches no request' do
      let(:request_id) { 0 }

      it 'should not be successful and have errors indicating request id is invalid' do
        expect(subject.errors.full_messages).to eq(['request_id is invalid'])
      end
    end

    context 'when the request is already cancelled' do
      before do
        request.discard!
      end

      it 'should not be successful and have errors' do
        expect(subject.errors.full_messages).to eq(['request already cancelled'])
      end
    end

    context 'when there are no validation errors' do
      let(:fake_mailer) { double('fake_mailer', deliver_later: -> {}) }
      before do
        allow(RequestMailer).to receive(:request_cancel_partner_notification).with(request_id: request.id).and_return(fake_mailer)
      end

      it 'should update the discarded_at column on the request' do
        expect { subject }.to change { request.reload.discarded? }.from(false).to(true)
      end

      it 'should update the status column on the request' do
        expect { subject }.to change { request.reload.status_cancelled? }.from(false).to(true)
      end

      it 'should send a email notification to the partner' do
        subject
        expect(fake_mailer).to have_received(:deliver_later)
      end
    end

    context "when the request's partner is deactivated" do
      let!(:partner) { create(:partner, status: 'deactivated') }
      let(:request) { create(:request, partner: partner) }

      it 'should update the status column on the request' do
        expect { subject }.to change { request.reload.status_cancelled? }.from(false).to(true)
      end

      it 'should not send a email notification to the partner' do
        expect(RequestMailer).not_to receive(:request_cancel_partner_notification)
        subject
      end
    end
  end
end