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https://github.com/openfoodfoundation/openfoodnetwork
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a2c4c44eea
A Vine voucher is really a specific type of FlatRate voucher but because a Vine voucher can be used by mutiple enterprise, it can be considered different enough to warrant it's own class. It still share a lot of the behaviour of a FlatRate voucher, so to avoid duplication, all the shared functionality have been moved to a Vouchers::FlatRatable concern.
84 lines
2.4 KiB
Ruby
84 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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require 'spec_helper'
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RSpec.describe Vouchers::Vine do
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describe 'validations' do
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subject { build(:vine_voucher) }
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it { is_expected.to validate_presence_of(:amount) }
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it { is_expected.to validate_numericality_of(:amount).is_greater_than(0) }
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describe "#code" do
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subject { build(:vine_voucher, code: 'vine_code', enterprise:, external_voucher_id: ) }
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let(:external_voucher_id) { SecureRandom.uuid }
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let(:enterprise) { create(:enterprise) }
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it {
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is_expected.to validate_uniqueness_of(:code).scoped_to(
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[:enterprise_id, :external_voucher_id]
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)
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}
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it "can be reused within the same enterprise" do
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subject.save!
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# Voucher with the same code but different external_voucher_id, it is mapped to a
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# different voucher in VINE
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voucher = build(:vine_voucher, code: 'vine_code', enterprise: )
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expect(voucher.valid?).to be(true)
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end
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it "can be used by mutiple enterprises" do
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subject.save!
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# Voucher with the same code and external_voucher_id, ie exiting VINE voucher used by
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# another enterprise
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voucher = build(:vine_voucher, code: 'vine_code', enterprise: build(:enterprise),
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external_voucher_id: )
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expect(voucher.valid?).to be(true)
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end
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end
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end
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describe '#compute_amount' do
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let(:order) { create(:order_with_totals) }
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before do
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order.update_columns(item_total: 15)
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end
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context 'when order total is more than the voucher' do
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subject { create(:vine_voucher, amount: 5) }
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it 'uses the voucher total' do
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expect(subject.compute_amount(order).to_f).to eq(-5)
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end
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end
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context 'when order total is less than the voucher' do
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subject { create(:vine_voucher, amount: 20) }
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it 'matches the order total' do
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expect(subject.compute_amount(order).to_f).to eq(-15)
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end
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end
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end
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describe "#rate" do
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subject do
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create(:vine_voucher, code: 'new_code', amount: 5)
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end
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let(:order) { create(:order_with_totals) }
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before do
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order.update_columns(item_total: 10)
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end
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it "returns the voucher rate" do
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# rate = -voucher_amount / order.pre_discount_total
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# -5 / 10 = -0.5
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expect(subject.rate(order).to_f).to eq(-0.5)
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end
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end
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end
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