require 'spec_helper'
require 'spree/testing_support/bar_ability'

module Spree
  describe Api::OrdersController, :type => :controller do
    render_views
    let!(:order) { create(:order) }
    let(:variant) { create(:variant) }
    let(:line_item) { create(:line_item) }

    let(:attributes) { [:number, :item_total, :display_total, :total,
                        :state, :adjustment_total,
                        :user_id, :created_at, :updated_at,
                        :completed_at, :payment_total, :shipment_state,
                        :payment_state, :email, :special_instructions,
                        :total_quantity, :display_item_total, :currency] }

    let(:address_params) { { :country_id => Country.first.id, :state_id => State.first.id } }

    let(:current_api_user) do
      user = Spree.user_class.new(:email => "spree@example.com")
      user.generate_spree_api_key!
      user
    end

    before do
      stub_authentication!
    end

    describe "POST create" do
      let(:target_user) { create :user }
      let(:date_override) { 3.days.ago }

      before do
        allow_any_instance_of(Spree::Ability).to receive(:can?).
          and_return(true)

        allow_any_instance_of(Spree::Ability).to receive(:can?).
          with(:admin, Spree::Order).
          and_return(can_admin)

        allow(Spree.user_class).to receive(:find).
          with(target_user.id).
          and_return(target_user)
      end

      subject { api_post :create, order: { user_id: target_user.id, created_at: date_override, email: target_user.email } }

      context "when the current user cannot administrate the order" do
        let(:can_admin) { false }

        it "does not include unpermitted params, or allow overriding the user", focus: true do
          expect(Spree::Core::Importer::Order).to receive(:import).
            once.
            with(current_api_user, { "email" => target_user.email }).
            and_call_original
          subject
        end

        it { is_expected.to be_success }
      end

      context "when the current user can administrate the order" do
        let(:can_admin) { true }

        it "it permits all params and allows overriding the user" do
          expect(Spree::Core::Importer::Order).to receive(:import).
            once.
            with(target_user, { "user_id" => target_user.id, "created_at" => date_override, "email" => target_user.email}).
            and_call_original
          subject
        end

        it { is_expected.to be_success }
      end
    end

    describe "PUT update" do
      let(:user) { create :user }
      let(:order_params) { { number: "anothernumber", user_id: user.id, email: "foo@foobar.com" } }
      let(:can_admin) { false }
      subject { api_put :update, id: order.to_param, order: order_params }

      before do
        allow_any_instance_of(Spree::Ability).to receive(:can?).
          and_return(true)

        allow(Spree::Order).to receive(:find_by!).
          with(number: order.number).
          and_return(order)

        allow(Spree.user_class).to receive(:find).
          with(user.id).
          and_return(user)

        allow_any_instance_of(Spree::Ability).to receive(:can?).
          with(:admin, Spree::Order).
          and_return(can_admin)
      end

      it "updates the cart contents" do
        expect(order.contents).to receive(:update_cart).
          once.
          with({"email" => "foo@foobar.com"})
        subject
      end

      it { is_expected.to be_success }

      context "when the user can administer the order" do
        let(:can_admin) { true }

        it "will associate users" do
          expect(order).to receive(:associate_user!).
            once.
            with(user)

          subject
        end

        it "updates the otherwise forbidden attributes" do
          expect{subject}.to change{order.reload.number}.
            to("anothernumber")
        end
      end

      context "when the user cannot administer the order" do
        it "does not associate users" do
          expect(order).to_not receive(:associate_user!)
          subject
        end

        it "does not change forbidden attributes" do
          expect{subject}.to_not change{order.reload.number}
        end
      end
    end

    it "cannot view all orders" do
      api_get :index
      assert_unauthorized!
    end

    context "the current api user does not exist" do
      let(:current_api_user) { nil }

      it "returns a 401" do
        api_get :mine
        expect(response.status).to eq(401)
      end
    end

    context "the current api user is authenticated" do
      let(:current_api_user) { order.user }
      let(:store) { create(:store) }
      let(:order) { create(:order, line_items: [line_item], store: store) }

      it "can view all of their own orders for the current store" do
        request.env['SERVER_NAME'] = store.url
        api_get :mine

        expect(response.status).to eq(200)
        expect(json_response["pages"]).to eq(1)
        expect(json_response["current_page"]).to eq(1)
        expect(json_response["orders"].length).to eq(1)
        expect(json_response["orders"].first["number"]).to eq(order.number)
        expect(json_response["orders"].first["line_items"].length).to eq(1)
        expect(json_response["orders"].first["line_items"].first["id"]).to eq(line_item.id)
      end

      it "cannot view orders for a different store" do
        request.env['SERVER_NAME'] = "foo"
        api_get :mine

        expect(response.status).to eq(200)
        expect(json_response["orders"].length).to eq(0)
      end

      it "can filter the returned results" do
        request.env['SERVER_NAME'] = store.url
        api_get :mine, q: {completed_at_not_null: 1}

        expect(response.status).to eq(200)
        expect(json_response["orders"].length).to eq(0)
      end

      it "returns orders in reverse chronological order by completed_at" do
        order.update_columns completed_at: Time.now

        order2 = Order.create user: order.user, completed_at: Time.now - 1.day, store: store
        expect(order2.created_at).to be > order.created_at
        order3 = Order.create user: order.user, completed_at: nil, store: store
        expect(order3.created_at).to be > order2.created_at
        order4 = Order.create user: order.user, completed_at: nil, store: store
        expect(order4.created_at).to be > order3.created_at

        request.env['SERVER_NAME'] = store.url
        api_get :mine
        expect(response.status).to eq(200)
        expect(json_response["pages"]).to eq(1)
        orders = json_response["orders"]
        expect(orders.length).to eq(4)
        expect(orders[0]["number"]).to eq(order.number)
        expect(orders[1]["number"]).to eq(order2.number)
        expect([orders[2]["number"], orders[3]["number"]]).to match_array([order3.number, order4.number])
      end
    end

    describe 'current' do
      let(:current_api_user) { order.user }
      let!(:order) { create(:order, line_items: [line_item]) }

      it "uses the user's last_incomplete_spree_order logic with the current store" do
        expect(current_api_user).to receive(:last_incomplete_spree_order).with(store: controller.current_store)
        api_get :current, format: 'json'
      end
    end

    it "can view their own order" do
      allow_any_instance_of(Order).to receive_messages :user => current_api_user
      api_get :show, :id => order.to_param
      expect(response.status).to eq(200)
      expect(json_response).to have_attributes(attributes)
      expect(json_response["adjustments"]).to be_empty
    end

    describe 'GET #show' do
      let(:order) { create :order_with_line_items }
      let(:adjustment) { FactoryGirl.create(:adjustment, adjustable: order, order: order) }

      subject { api_get :show, id: order.to_param }

      before do
        allow_any_instance_of(Order).to receive_messages :user => current_api_user
      end

      context 'when inventory information is present' do
        it 'contains stock information on variant' do
          subject
          variant = json_response['line_items'][0]['variant']
          expect(variant).to_not be_nil
          expect(variant['in_stock']).to eq(false)
          expect(variant['total_on_hand']).to eq(0)
          expect(variant['is_backorderable']).to eq(true)
          expect(variant['is_destroyed']).to eq(false)
        end
      end

      context 'when shipment adjustments are present' do
        before do
          order.shipments.first.adjustments << adjustment
        end

        it 'contains adjustments on shipment' do
          subject

          # Test to insure shipment has adjustments
          shipment = json_response['shipments'][0]
          expect(shipment).to_not be_nil
          expect(shipment['adjustments'][0]).not_to be_empty
          expect(shipment['adjustments'][0]['label']).to eq(adjustment.label)
        end
      end

      context 'when credit cards are present' do
        let!(:payment) { create(:credit_card_payment, order: order, source: credit_card) }
        let(:credit_card) { create(:credit_card, address: create(:address)) }

        it 'contains the credit cards' do
          subject

          credit_cards = json_response['credit_cards']
          expect(credit_cards.size).to eq 1
          expect(credit_cards[0]['id']).to eq payment.source.id
          expect(credit_cards[0]['address']['id']).to eq credit_card.address_id
        end
      end
    end

    it "orders contain the basic checkout steps" do
      allow_any_instance_of(Order).to receive_messages :user => current_api_user
      api_get :show, :id => order.to_param
      expect(response.status).to eq(200)
      expect(json_response["checkout_steps"]).to eq(%w[address delivery confirm complete])
    end

    # Regression test for #1992
    it "can view an order not in a standard state" do
      allow_any_instance_of(Order).to receive_messages :user => current_api_user
      order.update_column(:state, 'shipped')
      api_get :show, :id => order.to_param
    end

    it "can not view someone else's order" do
      allow_any_instance_of(Order).to receive_messages :user => stub_model(Spree::LegacyUser)
      api_get :show, :id => order.to_param
      assert_unauthorized!
    end

    it "can view an order if the token is known" do
      api_get :show, :id => order.to_param, :order_token => order.guest_token
      expect(response.status).to eq(200)
    end

    it "can view an order if the token is passed in header" do
      request.headers["X-Spree-Order-Token"] = order.guest_token
      api_get :show, :id => order.to_param
      expect(response.status).to eq(200)
    end

    context "with BarAbility registered" do
      before { Spree::Ability.register_ability(::BarAbility) }
      after { Spree::Ability.remove_ability(::BarAbility) }

      it "can view an order" do
        user = build(:user, spree_roles: [Spree::Role.new(name: 'bar')])
        allow(Spree.user_class).to receive_messages find_by: user
        api_get :show, :id => order.to_param
        expect(response.status).to eq(200)
      end
    end

    it "cannot cancel an order that doesn't belong to them" do
      order.update_attribute(:completed_at, Time.now)
      order.update_attribute(:shipment_state, "ready")
      api_put :cancel, :id => order.to_param
      assert_unauthorized!
    end

    it "can create an order" do
      api_post :create, :order => { :line_items => { "0" => { :variant_id => variant.to_param, :quantity => 5 } } }
      expect(response.status).to eq(201)

      order = Order.last
      expect(order.line_items.count).to eq(1)
      expect(order.line_items.first.variant).to eq(variant)
      expect(order.line_items.first.quantity).to eq(5)

      expect(json_response['number']).to be_present
      expect(json_response["token"]).not_to be_blank
      expect(json_response["state"]).to eq("cart")
      expect(order.user).to eq(current_api_user)
      expect(order.email).to eq(current_api_user.email)
      expect(json_response["user_id"]).to eq(current_api_user.id)
    end

    it "assigns email when creating a new order" do
      api_post :create, :order => { :email => "guest@spreecommerce.com" }
      expect(json_response['email']).not_to eq controller.current_api_user
      expect(json_response['email']).to eq "guest@spreecommerce.com"
    end

    # Regression test for #3404
    it "can specify additional parameters for a line item" do
      expect(Order).to receive(:create!).and_return(order = Spree::Order.new)
      allow(order).to receive(:associate_user!)
      allow(order).to receive_message_chain(:contents, :add).and_return(line_item = double('LineItem'))
      expect(line_item).to receive(:update_attributes!).with("special" => true)

      allow(controller).to receive_messages(permitted_line_item_attributes: [:id, :variant_id, :quantity, :special])
      api_post :create, :order => {
        :line_items => {
          "0" => {
            :variant_id => variant.to_param, :quantity => 5, :special => true
          }
        }
      }
      expect(response.status).to eq(201)
    end

    it "cannot arbitrarily set the line items price" do
      api_post :create, :order => {
        :line_items => {
          "0" => {
            :price => 33.0, :variant_id => variant.to_param, :quantity => 5
          }
        }
      }

      expect(response.status).to eq 201
      expect(Order.last.line_items.first.price.to_f).to eq(variant.price)
    end

    context "admin user imports order" do
      let!(:current_api_user) { create :admin_user }

      it "is able to set any default unpermitted attribute" do
        api_post :create, :order => { number: "WOW" }
        expect(response.status).to eq 201
        expect(json_response['number']).to eq "WOW"
      end
    end

    it "can create an order without any parameters" do
      expect { api_post :create }.not_to raise_error
      expect(response.status).to eq(201)
      expect(json_response["state"]).to eq("cart")
    end

    context "working with an order" do

      let(:variant) { create(:variant) }
      let!(:line_item) { order.contents.add(variant, 1) }
      let!(:payment_method) { create(:check_payment_method) }

      let(:address_params) { { :country_id => country.id } }
      let(:billing_address) { { :firstname => "Tiago", :lastname => "Motta", :address1 => "Av Paulista",
                                :city => "Sao Paulo", :zipcode => "01310-300", :phone => "12345678",
                                :country_id => country.id} }
      let(:shipping_address) { { :firstname => "Tiago", :lastname => "Motta", :address1 => "Av Paulista",
                                 :city => "Sao Paulo", :zipcode => "01310-300", :phone => "12345678",
                                 :country_id => country.id} }
      let(:country) { create(:country, {name: "Brazil", iso_name: "BRAZIL", iso: "BR", iso3: "BRA", numcode: 76 })}

      before { allow_any_instance_of(Order).to receive_messages user: current_api_user }

      it "updates quantities of existing line items" do
        api_put :update, :id => order.to_param, :order => {
          :line_items => {
            "0" => { :id => line_item.id, :quantity => 10 }
          }
        }

        expect(response.status).to eq(200)
        expect(json_response['line_items'].count).to eq(1)
        expect(json_response['line_items'].first['quantity']).to eq(10)
      end

      it "adds an extra line item" do
        variant2 = create(:variant)
        api_put :update, :id => order.to_param, :order => {
          :line_items => {
            "0" => { :id => line_item.id, :quantity => 10 },
            "1" => { :variant_id => variant2.id, :quantity => 1}
          }
        }

        expect(response.status).to eq(200)
        expect(json_response['line_items'].count).to eq(2)
        expect(json_response['line_items'][0]['quantity']).to eq(10)
        expect(json_response['line_items'][1]['variant_id']).to eq(variant2.id)
        expect(json_response['line_items'][1]['quantity']).to eq(1)
      end

      it "cannot change the price of an existing line item" do
        api_put :update, :id => order.to_param, :order => {
          :line_items => {
            0 => { :id => line_item.id, :price => 0 }
          }
        }

        expect(response.status).to eq(200)
        expect(json_response['line_items'].count).to eq(1)
        expect(json_response['line_items'].first['price'].to_f).to_not eq(0)
        expect(json_response['line_items'].first['price'].to_f).to eq(line_item.variant.price)
      end

      it "can add billing address" do
        api_put :update, :id => order.to_param, :order => { :bill_address_attributes => billing_address }

        expect(order.reload.bill_address).to_not be_nil
      end

      it "receives error message if trying to add billing address with errors" do
        billing_address[:firstname] = ""

        api_put :update, :id => order.to_param, :order => { :bill_address_attributes => billing_address }

        expect(json_response['error']).not_to be_nil
        expect(json_response['errors']).not_to be_nil
        expect(json_response['errors']['bill_address.firstname'].first).to eq "can't be blank"
      end

      it "can add shipping address" do
        order.update_attributes!(ship_address_id: nil)

        expect {
          api_put :update, :id => order.to_param, :order => { :ship_address_attributes => shipping_address }
        }.to change { order.reload.ship_address }.from(nil)
      end

      it "receives error message if trying to add shipping address with errors" do
        order.update_attributes!(ship_address_id: nil)

        shipping_address[:firstname] = ""

        api_put :update, :id => order.to_param, :order => { :ship_address_attributes => shipping_address }

        expect(json_response['error']).not_to be_nil
        expect(json_response['errors']).not_to be_nil
        expect(json_response['errors']['ship_address.firstname'].first).to eq "can't be blank"
      end

      it "cannot set the user_id for the order" do
        user = Spree.user_class.create
        original_id = order.user_id
        api_post :update, :id => order.to_param, :order => { user_id: user.id }
        expect(response.status).to eq 200
        expect(json_response["user_id"]).to eq(original_id)
      end

      context "order has shipments" do
        before { order.create_proposed_shipments }

        it "clears out all existing shipments on line item udpate" do
          previous_shipments = order.shipments
          api_put :update, :id => order.to_param, :order => {
            :line_items => {
              0 => { :id => line_item.id, :quantity => 10 }
            }
          }
          expect(order.reload.shipments).to be_empty
        end
      end

      context "with a line item" do
        let(:order) { create(:order_with_line_items) }

        it "can empty an order" do
          create(:adjustment, order: order, adjustable: order)
          api_put :empty, :id => order.to_param
          expect(response.status).to eq(204)
          order.reload
          expect(order.line_items).to be_empty
          expect(order.adjustments).to be_empty
        end

        it "can list its line items with images" do
          order.line_items.first.variant.images.create!(:attachment => image("thinking-cat.jpg"))

          api_get :show, :id => order.to_param

          expect(json_response['line_items'].first['variant']).to have_attributes([:images])
        end

        it "lists variants product id" do
          api_get :show, :id => order.to_param

          expect(json_response['line_items'].first['variant']).to have_attributes([:product_id])
        end

        it "includes the tax_total in the response" do
          api_get :show, :id => order.to_param

          expect(json_response['included_tax_total']).to eq('0.0')
          expect(json_response['additional_tax_total']).to eq('0.0')
          expect(json_response['display_included_tax_total']).to eq('$0.00')
          expect(json_response['display_additional_tax_total']).to eq('$0.00')
        end

        it "lists line item adjustments" do
          adjustment = create(:adjustment,
            :label => "10% off!",
            :order => order,
            :adjustable => order.line_items.first)
          adjustment.update_column(:amount, 5)
          api_get :show, :id => order.to_param

          adjustment = json_response['line_items'].first['adjustments'].first
          expect(adjustment['label']).to eq("10% off!")
          expect(adjustment['amount']).to eq("5.0")
        end

        it "lists payments source without gateway info" do
          order.payments.push payment = create(:payment)
          api_get :show, :id => order.to_param

          source = json_response[:payments].first[:source]
          expect(source[:name]).to eq payment.source.name
          expect(source[:cc_type]).to eq payment.source.cc_type
          expect(source[:last_digits]).to eq payment.source.last_digits
          expect(source[:month]).to eq payment.source.month
          expect(source[:year]).to eq payment.source.year
          expect(source.has_key?(:gateway_customer_profile_id)).to be false
          expect(source.has_key?(:gateway_payment_profile_id)).to be false
        end

        context "when in delivery" do
          let!(:shipping_method) do
            FactoryGirl.create(:shipping_method).tap do |shipping_method|
              shipping_method.calculator.preferred_amount = 10
              shipping_method.calculator.save
            end
          end

          before do
            order.next!
            order.next!
            order.save
          end

          it "includes the ship_total in the response" do
            api_get :show, id: order.to_param

            expect(json_response['ship_total']).to eq '10.0'
            expect(json_response['display_ship_total']).to eq '$10.00'
          end

          it "returns available shipments for an order" do
            api_get :show, :id => order.to_param
            expect(response.status).to eq(200)
            expect(json_response["shipments"]).not_to be_empty
            shipment = json_response["shipments"][0]
            # Test for correct shipping method attributes
            # Regression test for #3206
            expect(shipment["shipping_methods"]).not_to be_nil
            json_shipping_method = shipment["shipping_methods"][0]
            expect(json_shipping_method["id"]).to eq(shipping_method.id)
            expect(json_shipping_method["name"]).to eq(shipping_method.name)
            expect(json_shipping_method["code"]).to eq(shipping_method.code)
            expect(json_shipping_method["zones"]).not_to be_empty
            expect(json_shipping_method["shipping_categories"]).not_to be_empty

            # Test for correct shipping rates attributes
            # Regression test for #3206
            expect(shipment["shipping_rates"]).not_to be_nil
            shipping_rate = shipment["shipping_rates"][0]
            expect(shipping_rate["name"]).to eq(json_shipping_method["name"])
            expect(shipping_rate["cost"]).to eq("10.0")
            expect(shipping_rate["selected"]).to be true
            expect(shipping_rate["display_cost"]).to eq("$10.00")
            expect(shipping_rate["shipping_method_code"]).to eq(json_shipping_method["code"])

            expect(shipment["stock_location_name"]).not_to be_blank
            manifest_item = shipment["manifest"][0]
            expect(manifest_item["quantity"]).to eq(1)
            expect(manifest_item["variant_id"]).to eq(order.line_items.first.variant_id)
          end
        end
      end
    end

    context "as an admin" do
      sign_in_as_admin!

      context "with no orders" do
        before { Spree::Order.delete_all }
        it "still returns a root :orders key" do
          api_get :index
          expect(json_response["orders"]).to eq([])
        end
      end

      context "caching enabled" do
        before do
          ActionController::Base.perform_caching = true
          3.times { Order.create }
        end

        it "returns unique orders" do
          api_get :index

          orders = json_response[:orders]
          expect(orders.count).to be >= 3
          expect(orders.map { |o| o[:id] }).to match_array Order.pluck(:id)
        end

        after { ActionController::Base.perform_caching = false }
      end

      it "lists payments source with gateway info" do
        order.payments.push payment = create(:payment)
        api_get :show, :id => order.to_param

        source = json_response[:payments].first[:source]
        expect(source[:name]).to eq payment.source.name
        expect(source[:cc_type]).to eq payment.source.cc_type
        expect(source[:last_digits]).to eq payment.source.last_digits
        expect(source[:month]).to eq payment.source.month
        expect(source[:year]).to eq payment.source.year
        expect(source[:gateway_customer_profile_id]).to eq payment.source.gateway_customer_profile_id
        expect(source[:gateway_payment_profile_id]).to eq payment.source.gateway_payment_profile_id
      end

      context "with two orders" do
        before { create(:order) }

        it "can view all orders" do
          api_get :index
          expect(json_response["orders"].first).to have_attributes(attributes)
          expect(json_response["count"]).to eq(2)
          expect(json_response["current_page"]).to eq(1)
          expect(json_response["pages"]).to eq(1)
        end

        # Test for #1763
        it "can control the page size through a parameter" do
          api_get :index, :per_page => 1
          expect(json_response["orders"].count).to eq(1)
          expect(json_response["orders"].first).to have_attributes(attributes)
          expect(json_response["count"]).to eq(1)
          expect(json_response["current_page"]).to eq(1)
          expect(json_response["pages"]).to eq(2)
        end
      end

      context "search" do
        before do
          create(:order)
          Spree::Order.last.update_attribute(:email, 'spree@spreecommerce.com')
        end

        let(:expected_result) { Spree::Order.last }

        it "can query the results through a parameter" do
          api_get :index, :q => { :email_cont => 'spree' }
          expect(json_response["orders"].count).to eq(1)
          expect(json_response["orders"].first).to have_attributes(attributes)
          expect(json_response["orders"].first["email"]).to eq(expected_result.email)
          expect(json_response["count"]).to eq(1)
          expect(json_response["current_page"]).to eq(1)
          expect(json_response["pages"]).to eq(1)
        end
      end

      context "creation" do
        it "can create an order without any parameters" do
          expect { api_post :create }.not_to raise_error
          expect(response.status).to eq(201)
          order = Order.last
          expect(json_response["state"]).to eq("cart")
        end

        it "can arbitrarily set the line items price" do
          api_post :create, :order => {
            :line_items => {
              "0" => {
                :price => 33.0, :variant_id => variant.to_param, :quantity => 5
              }
            }
          }
          expect(response.status).to eq 201
          expect(Order.last.line_items.first.price.to_f).to eq(33.0)
        end

        it "can set the user_id for the order" do
          user = Spree.user_class.create
          api_post :create, :order => { user_id: user.id }
          expect(response.status).to eq 201
          expect(json_response["user_id"]).to eq(user.id)
        end
      end

      context "updating" do
        it "can set the user_id for the order" do
          user = Spree.user_class.create
          api_post :update, :id => order.number, :order => { user_id: user.id }
          expect(response.status).to eq 200
          expect(json_response["user_id"]).to eq(user.id)
        end
      end

      context "can cancel an order" do
        before do
          Spree::Config[:mails_from] = "spree@example.com"

          order.completed_at = Time.now
          order.state = 'complete'
          order.shipment_state = 'ready'
          order.save!
        end

        specify do
          api_put :cancel, :id => order.to_param
          expect(json_response["state"]).to eq("canceled")
        end
      end
    end

    describe '#apply_coupon_code' do
      let(:promo) { create(:promotion_with_item_adjustment, code: 'abc') }
      let(:promo_code) { promo.codes.first }

      before do
        allow_any_instance_of(Order).to receive_messages :user => current_api_user
      end

      context 'when successful' do
        let(:order) { create(:order_with_line_items) }

        it 'applies the coupon' do
          api_put :apply_coupon_code, id: order.to_param, coupon_code: promo_code.value

          expect(response.status).to eq 200
          expect(order.reload.promotions).to eq [promo]
          expect(json_response).to eq({
            "success" => Spree.t(:coupon_code_applied),
            "error" => nil,
            "successful" => true,
            "status_code" => "coupon_code_applied",
          })
        end
      end

      context 'when unsuccessful' do
        let(:order) { create(:order) } # no line items to apply the code to

        it 'returns an error' do
          api_put :apply_coupon_code, id: order.to_param, coupon_code: promo_code.value

          expect(response.status).to eq 422
          expect(order.reload.promotions).to eq []
          expect(json_response).to eq({
            "success" => nil,
            "error" => Spree.t(:coupon_code_unknown_error),
            "successful" => false,
            "status_code" => "coupon_code_unknown_error",
          })
        end
      end
    end
  end
end