# frozen_string_literal: true

RSpec.describe PlanetExpress::DiscountBudgetForMonthRepository do
  subject { described_class.new }
  let(:march_date_a) { Date.new(2021, 3, 6) }
  let(:march_date_b) { Date.new(2021, 3, 6) }

  describe '#for_month' do
    it 'returns the same discount budget for the same month' do
      expect(subject.for_month(march_date_a).object_id).to(
        eq(subject.for_month(march_date_b).object_id)
      )
    end

    context 'not yet initialized month' do
      it 'returns a discount budget' do
        result = subject.for_month(march_date_a)

        expect(result).to be_an_instance_of(PlanetExpress::DiscountBudget)
        expect(result.available_budget).to eq(PlanetExpress::DiscountBudgetForMonthRepository::DEFAULT_BUDGET)
      end
    end

    context 'other month' do
      let(:april_date) { Date.new(2021, 4, 12) }
      it 'returns a different discount budget' do
        expect(subject.for_month(march_date_a).object_id).to_not(eq(
                                                                   subject.for_month(april_date).object_id
                                                                 ))
      end
    end
  end
end