diet_searcher_spec.rb

require 'spec_helper'

describe DietSearcher, type: :model do
  let(:params) do
    { 'per_page' => '',
      'product_search_form' => { 'allergens_ids' => ['1'] } }
  end

  describe 'Spree searcher intergration', type: :controller do
    let(:vegan_cookies) { create :wellness_product }
    let(:cookies) { create :wellness_product, allergens: egg }
    let(:egg) { create :allergen, id: 1 }

    controller Spree::StoreController do
      def index
        @searcher = build_searcher(params)
        @products = @searcher.retrieve_products
        render text: 'sup'
      end
    end

    it "it calls #{described_class}'s retrieve_products" do
      get :index
    end

    context 'when a filter is applied' do
      before { get :index, params }

      let(:params) { {
        per_page: 100,
        product_search_form: filter_params } }

      context "and it's an inclusionary filter" do
        describe 'filtering for lifestyles' do
          subject { assigns(:products) }

          let!(:vegan) { create :lifestyle }
          let!(:raw) { create :lifestyle }
          let!(:filter_params) { { lifestyles_ids: [ vegan, raw ] } }

          context 'when a product fits some, but not all of the lifestyles' do
            let!(:vegan_cookies) { create :wellness_product, lifestyles: vegan }
            it 'is not returned' do
              expect(subject).to_not include vegan_cookies
            end
          end

          context 'when a product fits all of the lifestyles' do
            let!(:almonds) { create :wellness_product, lifestyles: [vegan, raw] }
            it 'is returned' do
              expect(subject).to include almonds
            end
          end

          context 'when a product fits none of the lifestyles' do
            let!(:steak) { create :wellness_product }
            it 'is not returned' do
              expect(subject).to_not include steak
            end
          end
        end
      end

      context "and it's an exclusionary filter" do
        describe 'filtering against allergens' do
          subject { assigns(:products) }

          let!(:shellfish) { create :allergen }
          let!(:egg) { create :allergen }
          let!(:filter_params) { { allergens_ids: [shellfish.id, egg.id] } }

          context 'when a product has any of the allergens' do
            let!(:crab_cake) { create :wellness_product, ingredient_allergens: shellfish }
            it 'is not returned' do
              is_expected.to_not include crab_cake
            end
          end

          context 'when a product has all of the allergens' do
            let!(:tempura) { create :wellness_product, ingredient_allergens: [egg, shellfish] }
            it 'is not returned' do
              is_expected.to_not include tempura
            end
          end

          context 'when a a product has none of the allergen' do
            let!(:bacon) { create :wellness_product }
            it 'is returned' do
              is_expected.to include bacon
            end
          end
        end
      end
    end

    context 'when no filter is applied' do
      it 'returns all products' do
        get :index
        expect(assigns(:products)).to eq [ vegan_cookies, cookies ]
      end
    end
  end

  describe '.product_search_form' do
    let(:params) do
      { 'product_search_form' => { 'allergens_ids' => ['1'] } }
    end
    let(:searcher) { described_class.new(params) }

    subject { searcher.send :product_search_form }

    it { is_expected.to be_a ProductSearchForm }

    it "is initialized with the params hash" do
      expect(subject.allergens_ids).to eq [ 1 ]
    end
  end
end