diff --git a/.rubocop_manual_todo.yml b/.rubocop_manual_todo.yml
index b9cbfff18b..f68559cd67 100644
--- a/.rubocop_manual_todo.yml
+++ b/.rubocop_manual_todo.yml
@@ -42,7 +42,6 @@ Layout/LineLength:
   - app/helpers/angular_form_helper.rb
   - app/helpers/checkout_helper.rb
   - app/helpers/enterprises_helper.rb
-  - app/helpers/injection_helper.rb
   - app/helpers/markdown_helper.rb
   - app/helpers/order_cycles_helper.rb
   - app/helpers/spree/orders_helper.rb
@@ -88,6 +87,7 @@ Layout/LineLength:
   - Gemfile
   - lib/discourse/single_sign_on.rb
   - lib/open_food_network/available_payment_method_filter.rb
+  - lib/open_food_network/bulk_coop_report.rb
   - lib/open_food_network/customers_report.rb
   - lib/open_food_network/enterprise_fee_applicator.rb
   - lib/open_food_network/enterprise_fee_calculator.rb
diff --git a/app/controllers/admin/enterprises_controller.rb b/app/controllers/admin/enterprises_controller.rb
index f1b4887f6a..ac2762cbf0 100644
--- a/app/controllers/admin/enterprises_controller.rb
+++ b/app/controllers/admin/enterprises_controller.rb
@@ -181,10 +181,10 @@ module Admin
       enterprise_payment_methods = @enterprise.payment_methods.to_a
       enterprise_shipping_methods = @enterprise.shipping_methods.to_a
       # rubocop:disable Style/TernaryParentheses
-      @payment_methods = Spree::PaymentMethod.managed_by(spree_current_user).sort_by! do |pm|
+      @payment_methods = Spree::PaymentMethod.managed_by(spree_current_user).to_a.sort_by! do |pm|
         [(enterprise_payment_methods.include? pm) ? 0 : 1, pm.name]
       end
-      @shipping_methods = Spree::ShippingMethod.managed_by(spree_current_user).sort_by! do |sm|
+      @shipping_methods = Spree::ShippingMethod.managed_by(spree_current_user).to_a.sort_by! do |sm|
         [(enterprise_shipping_methods.include? sm) ? 0 : 1, sm.name]
       end
       # rubocop:enable Style/TernaryParentheses
diff --git a/app/controllers/spree/admin/payment_methods_controller.rb b/app/controllers/spree/admin/payment_methods_controller.rb
index 72408fef26..acd8de697b 100644
--- a/app/controllers/spree/admin/payment_methods_controller.rb
+++ b/app/controllers/spree/admin/payment_methods_controller.rb
@@ -127,7 +127,7 @@ module Spree
 
       def load_hubs
         # rubocop:disable Style/TernaryParentheses
-        @hubs = Enterprise.managed_by(spree_current_user).is_distributor.sort_by! do |d|
+        @hubs = Enterprise.managed_by(spree_current_user).is_distributor.to_a.sort_by! do |d|
           [(@payment_method.has_distributor? d) ? 0 : 1, d.name]
         end
         # rubocop:enable Style/TernaryParentheses
diff --git a/app/controllers/spree/admin/shipping_methods_controller.rb b/app/controllers/spree/admin/shipping_methods_controller.rb
index 14f7654177..cace3feea4 100644
--- a/app/controllers/spree/admin/shipping_methods_controller.rb
+++ b/app/controllers/spree/admin/shipping_methods_controller.rb
@@ -50,7 +50,7 @@ module Spree
 
       def load_hubs
         # rubocop:disable Style/TernaryParentheses
-        @hubs = Enterprise.managed_by(spree_current_user).is_distributor.sort_by! do |d|
+        @hubs = Enterprise.managed_by(spree_current_user).is_distributor.to_a.sort_by! do |d|
           [(@shipping_method.has_distributor? d) ? 0 : 1, d.name]
         end
         # rubocop:enable Style/TernaryParentheses
diff --git a/app/helpers/checkout_helper.rb b/app/helpers/checkout_helper.rb
index c87abd0afb..a8d7c78264 100644
--- a/app/helpers/checkout_helper.rb
+++ b/app/helpers/checkout_helper.rb
@@ -7,6 +7,8 @@ module CheckoutHelper
     adjustments = order.adjustments.eligible
     exclude = opts[:exclude] || {}
 
+    adjustments = adjustments.to_a
+
     # Remove empty tax adjustments and (optionally) shipping fees
     adjustments.reject! { |a| a.originator_type == 'Spree::TaxRate' && a.amount == 0 }
     adjustments.reject! { |a| a.originator_type == 'Spree::ShippingMethod' } if exclude.include? :shipping
diff --git a/app/helpers/injection_helper.rb b/app/helpers/injection_helper.rb
index 17c122f0a7..7addd06135 100644
--- a/app/helpers/injection_helper.rb
+++ b/app/helpers/injection_helper.rb
@@ -4,7 +4,7 @@ module InjectionHelper
   include SerializerHelper
 
   def inject_enterprises(enterprises = nil)
-    inject_json_ams(
+    inject_json_array(
       "enterprises",
       enterprises || default_enterprise_query,
       Api::EnterpriseSerializer,
@@ -15,7 +15,7 @@ module InjectionHelper
   def inject_groups
     select_only = required_attributes EnterpriseGroup, Api::GroupListSerializer
 
-    inject_json_ams(
+    inject_json_array(
       "groups",
       EnterpriseGroup.on_front_page.by_position.select(select_only).
         includes(enterprises: [:shipping_methods, { address: [:state, :country] }],
@@ -26,7 +26,7 @@ module InjectionHelper
   end
 
   def inject_enterprise_shopfront(enterprise)
-    inject_json_ams(
+    inject_json(
       "shopfront",
       enterprise,
       Api::EnterpriseShopfrontSerializer
@@ -36,7 +36,7 @@ module InjectionHelper
   def inject_enterprise_shopfront_list
     select_only = required_attributes Enterprise, Api::EnterpriseShopfrontListSerializer
 
-    inject_json_ams(
+    inject_json_array(
       "enterprises",
       Enterprise.activated.visible.select(select_only).includes(address: [:state, :country]).all,
       Api::EnterpriseShopfrontListSerializer
@@ -50,13 +50,13 @@ module InjectionHelper
       includes(:properties, address: [:state, :country], supplied_products: :properties).
       all
 
-    inject_json_ams "enterprises",
-                    enterprises_and_relatives,
-                    Api::EnterpriseSerializer, enterprise_injection_data
+    inject_json_array "enterprises",
+                      enterprises_and_relatives,
+                      Api::EnterpriseSerializer, enterprise_injection_data
   end
 
   def inject_group_enterprises
-    inject_json_ams(
+    inject_json_array(
       "enterprises",
       @group.enterprises.activated.all,
       Api::EnterpriseSerializer,
@@ -65,11 +65,18 @@ module InjectionHelper
   end
 
   def inject_current_hub
-    inject_json_ams "currentHub", current_distributor, Api::EnterpriseSerializer, enterprise_injection_data
+    inject_json "currentHub",
+                current_distributor,
+                Api::EnterpriseSerializer,
+                enterprise_injection_data
   end
 
   def inject_current_order
-    inject_json_ams "currentOrder", current_order, Api::CurrentOrderSerializer, current_distributor: current_distributor, current_order_cycle: current_order_cycle
+    inject_json "currentOrder",
+                current_order,
+                Api::CurrentOrderSerializer,
+                current_distributor: current_distributor,
+                current_order_cycle: current_order_cycle
   end
 
   def inject_current_order_cycle
@@ -79,73 +86,78 @@ module InjectionHelper
   end
 
   def inject_available_shipping_methods
-    inject_json_ams "shippingMethods", available_shipping_methods,
-                    Api::ShippingMethodSerializer, current_order: current_order
+    inject_json_array "shippingMethods", available_shipping_methods,
+                      Api::ShippingMethodSerializer, current_order: current_order
   end
 
   def inject_available_payment_methods
-    inject_json_ams "paymentMethods", available_payment_methods,
-                    Api::PaymentMethodSerializer, current_order: current_order
+    inject_json_array "paymentMethods", available_payment_methods,
+                      Api::PaymentMethodSerializer, current_order: current_order
   end
 
   def inject_taxons
-    inject_json_ams "taxons", Spree::Taxon.all.to_a, Api::TaxonSerializer
+    inject_json_array "taxons", Spree::Taxon.all.to_a, Api::TaxonSerializer
   end
 
   def inject_properties
-    inject_json_ams "properties", Spree::Property.all.to_a, Api::PropertySerializer
+    inject_json_array "properties", Spree::Property.all.to_a, Api::PropertySerializer
   end
 
   def inject_currency_config
-    inject_json_ams "currencyConfig", {}, Api::CurrencyConfigSerializer
+    inject_json "currencyConfig", {}, Api::CurrencyConfigSerializer
   end
 
   def inject_open_street_map_config
-    inject_json_ams "openStreetMapConfig", {}, Api::OpenStreetMapConfigSerializer
+    inject_json "openStreetMapConfig", {}, Api::OpenStreetMapConfigSerializer
   end
 
   def inject_spree_api_key
-    render partial: "json/injection_ams", locals: { name: 'spreeApiKey', json: "'#{@spree_api_key}'" }
+    render partial: "json/injection_ams",
+           locals: { name: 'spreeApiKey', json: "'#{@spree_api_key}'" }
   end
 
   def inject_available_countries
-    inject_json_ams "availableCountries", available_countries, Api::CountrySerializer
+    inject_json_array "availableCountries", available_countries, Api::CountrySerializer
   end
 
   def inject_enterprise_attributes
-    render partial: "json/injection_ams", locals: { name: 'enterpriseAttributes', json: @enterprise_attributes.to_json.to_s }
+    render partial: "json/injection_ams",
+           locals: { name: 'enterpriseAttributes', json: @enterprise_attributes.to_json.to_s }
   end
 
   def inject_orders
-    inject_json_ams "orders", @orders.all, Api::OrderSerializer
+    inject_json_array "orders", @orders.all, Api::OrderSerializer
   end
 
   def inject_shops
     customers = spree_current_user.customers
-    shops = Enterprise.where(id: @orders.pluck(:distributor_id).uniq | customers.pluck(:enterprise_id))
-    inject_json_ams "shops", shops.all, Api::ShopForOrdersSerializer
+    shops = Enterprise.where(id: @orders.pluck(:distributor_id).uniq |
+                                 customers.pluck(:enterprise_id))
+    inject_json_array "shops", shops.all, Api::ShopForOrdersSerializer
   end
 
   def inject_saved_credit_cards
     data = spree_current_user ? spree_current_user.credit_cards.with_payment_profile.all : []
 
-    inject_json_ams "savedCreditCards", data, Api::CreditCardSerializer
+    inject_json_array "savedCreditCards", data, Api::CreditCardSerializer
   end
 
   def inject_current_user
-    inject_json_ams "user", spree_current_user, Api::UserSerializer
+    inject_json "user", spree_current_user, Api::UserSerializer
   end
 
   def inject_rails_flash
-    inject_json_ams "railsFlash", OpenStruct.new(flash.to_hash), Api::RailsFlashSerializer
+    inject_json "railsFlash", OpenStruct.new(flash.to_hash), Api::RailsFlashSerializer
   end
 
-  def inject_json_ams(name, data, serializer, opts = {})
-    if data.is_a?(Array)
-      opts = { each_serializer: serializer }.merge(opts)
-      serializer = ActiveModel::ArraySerializer
-    end
+  def inject_json_array(name, data, serializer, opts = {})
+    opts = { each_serializer: serializer }.merge(opts)
+    serializer = ActiveModel::ArraySerializer
 
+    inject_json(name, data, serializer, opts)
+  end
+
+  def inject_json(name, data, serializer, opts = {})
     serializer_instance = serializer.new(data, opts)
     json = serializer_instance.to_json
     render partial: "json/injection_ams", locals: { name: name, json: json }
diff --git a/app/mailers/producer_mailer.rb b/app/mailers/producer_mailer.rb
index 48f3c6a34d..5c61f2d0c8 100644
--- a/app/mailers/producer_mailer.rb
+++ b/app/mailers/producer_mailer.rb
@@ -60,11 +60,11 @@ class ProducerMailer < Spree::BaseMailer
   end
 
   def total_from_line_items(line_items)
-    Spree::Money.new line_items.sum(&:total)
+    Spree::Money.new line_items.to_a.sum(&:total)
   end
 
   def tax_total_from_line_items(line_items)
-    Spree::Money.new line_items.sum(&:included_tax)
+    Spree::Money.new line_items.to_a.sum(&:included_tax)
   end
 
   # This hack makes ActiveRecord skip the default_scope (deleted_at IS NULL)
diff --git a/app/models/calculator/default_tax.rb b/app/models/calculator/default_tax.rb
index de888c9283..5293dfd1cb 100644
--- a/app/models/calculator/default_tax.rb
+++ b/app/models/calculator/default_tax.rb
@@ -49,7 +49,7 @@ module Calculator
     # Finds relevant fees for each line_item,
     #   calculates the tax on them, and returns the total tax
     def per_item_fees_total(order, calculator)
-      order.line_items.sum do |line_item|
+      order.line_items.to_a.sum do |line_item|
         calculator.per_item_enterprise_fee_applicators_for(line_item.variant)
           .select { |applicator| applicable_rate?(applicator, line_item) }
           .sum { |applicator| applicator.enterprise_fee.compute_amount(line_item) }
diff --git a/app/models/calculator/flat_percent_per_item.rb b/app/models/calculator/flat_percent_per_item.rb
index ff6e222e89..b1b6a851a0 100644
--- a/app/models/calculator/flat_percent_per_item.rb
+++ b/app/models/calculator/flat_percent_per_item.rb
@@ -18,7 +18,7 @@ class Calculator::FlatPercentPerItem < Spree::Calculator
   end
 
   def compute(object)
-    line_items_for(object).sum do |li|
+    line_items_for(object).to_a.sum do |li|
       unless li.price.present? && li.quantity.present?
         raise ArgumentError, "object must respond to #price and #quantity"
       end
diff --git a/app/models/calculator/weight.rb b/app/models/calculator/weight.rb
index f4f451b785..8f060bb826 100644
--- a/app/models/calculator/weight.rb
+++ b/app/models/calculator/weight.rb
@@ -32,7 +32,7 @@ module Calculator
     private
 
     def total_weight(line_items)
-      line_items.sum do |line_item|
+      line_items.to_a.sum do |line_item|
         line_item_weight(line_item)
       end
     end
diff --git a/app/models/model_set.rb b/app/models/model_set.rb
index 1d5d7dbda3..8a599b4214 100644
--- a/app/models/model_set.rb
+++ b/app/models/model_set.rb
@@ -50,6 +50,7 @@ class ModelSet
     # Remove all elements to be deleted from collection and return them
     # Allows us to render @model_set.collection without deleted elements
     deleted = []
+    @collection = collection.to_a
     collection.delete_if { |e| deleted << e if @delete_if.andand.call(e.attributes) }
     deleted
   end
diff --git a/app/models/spree/line_item.rb b/app/models/spree/line_item.rb
index 61aa00eb06..cbe411fdeb 100644
--- a/app/models/spree/line_item.rb
+++ b/app/models/spree/line_item.rb
@@ -192,7 +192,7 @@ module Spree
 
       line_item_adjustments = OrderAdjustmentsFetcher.new(order).line_item_adjustments(self)
 
-      (price + line_item_adjustments.sum(&:amount) / quantity).round(2)
+      (price + line_item_adjustments.to_a.sum(&:amount) / quantity).round(2)
     end
 
     def single_display_amount_with_adjustments
diff --git a/app/models/spree/stock/quantifier.rb b/app/models/spree/stock/quantifier.rb
index 21f1750ca0..01e9b77cb1 100644
--- a/app/models/spree/stock/quantifier.rb
+++ b/app/models/spree/stock/quantifier.rb
@@ -30,7 +30,7 @@ module Spree
 
       def fetch_stock_items
         # Don't re-fetch associated stock items from the DB if we've already eager-loaded them
-        return @variant.stock_items.to_a if @variant.stock_items.loaded?
+        return @variant.stock_items if @variant.stock_items.loaded?
 
         Spree::StockItem.joins(:stock_location).
           where(:variant_id => @variant, Spree::StockLocation.table_name => { active: true })
diff --git a/app/views/spree/orders/_bought.html.haml b/app/views/spree/orders/_bought.html.haml
index f7030b31a8..e9cee63e7c 100644
--- a/app/views/spree/orders/_bought.html.haml
+++ b/app/views/spree/orders/_bought.html.haml
@@ -3,7 +3,7 @@
     %td.toggle-bought{ colspan: 2, ng: { click: 'showBought=!showBought' } }
       %h5.brick
         %i{ ng: { class: "{ 'ofn-i_007-caret-right': !showBought, 'ofn-i_005-caret-down': showBought}"} }
-        = t(:orders_bought_items_notice, count: @order.finalised_line_items.sum(&:quantity))
+        = t(:orders_bought_items_notice, count: @order.finalised_line_items.to_a.sum(&:quantity))
     %td.text-right{ colspan: 3 }
       %a.edit-finalised.button.radius.expand.small{ href: changeable_orders_link_path, ng: { class: "{secondary: !showBought, primary: showBought}" } }
         = t(:orders_bought_edit_button)
diff --git a/lib/open_food_network/available_payment_method_filter.rb b/lib/open_food_network/available_payment_method_filter.rb
index 2e9af09bf8..d42d4ae51b 100644
--- a/lib/open_food_network/available_payment_method_filter.rb
+++ b/lib/open_food_network/available_payment_method_filter.rb
@@ -2,9 +2,14 @@ module OpenFoodNetwork
   class AvailablePaymentMethodFilter
     def filter!(payment_methods)
       if stripe_enabled?
-        payment_methods.reject!{ |p| p.type.ends_with?("StripeConnect") && stripe_configuration_incomplete?(p) }
+        payment_methods.to_a.reject! do |payment_method|
+          payment_method.type.ends_with?("StripeConnect") &&
+            stripe_configuration_incomplete?(payment_method)
+        end
       else
-        payment_methods.reject!{ |p| p.type.ends_with?("StripeConnect") }
+        payment_methods.to_a.reject! do |payment_method|
+          payment_method.type.ends_with?("StripeConnect")
+        end
       end
     end
 
diff --git a/lib/open_food_network/packing_report.rb b/lib/open_food_network/packing_report.rb
index 88a3582083..34c1e0e730 100644
--- a/lib/open_food_network/packing_report.rb
+++ b/lib/open_food_network/packing_report.rb
@@ -61,7 +61,7 @@ module OpenFoodNetwork
                               proc { |_line_items| "" },
                               proc { |_line_items| I18n.t('admin.reports.total_items') },
                               proc { |_line_items| "" },
-                              proc { |line_items| line_items.sum(&:quantity) },
+                              proc { |line_items| line_items.to_a.sum(&:quantity) },
                               proc { |_line_items| "" }] },
           { group_by: proc { |line_item| line_item.product.supplier },
             sort_by: proc { |supplier| supplier.name } },
@@ -82,7 +82,7 @@ module OpenFoodNetwork
                              proc { |_line_items| "" },
                              proc { |_line_items| I18n.t('admin.reports.total_items') },
                              proc { |_line_items| "" },
-                             proc { |line_items| line_items.sum(&:quantity) },
+                             proc { |line_items| line_items.to_a.sum(&:quantity) },
                              proc { |_line_items| "" }] },
          { group_by: proc { |line_item| line_item.product },
            sort_by: proc { |product| product.name } },
@@ -102,7 +102,7 @@ module OpenFoodNetwork
          proc { |line_items| line_items.first.product.supplier.name },
          proc { |line_items| line_items.first.product.name },
          proc { |line_items| line_items.first.full_name },
-         proc { |line_items| line_items.sum(&:quantity) },
+         proc { |line_items| line_items.to_a.sum(&:quantity) },
          proc { |line_items| is_temperature_controlled?(line_items.first) }]
       else
         [
@@ -113,7 +113,7 @@ module OpenFoodNetwork
           proc { |line_items| line_items.first.order.bill_address.lastname },
           proc { |line_items| line_items.first.product.name },
           proc { |line_items| line_items.first.full_name },
-          proc { |line_items| line_items.sum(&:quantity) },
+          proc { |line_items| line_items.to_a.sum(&:quantity) },
           proc { |line_items| is_temperature_controlled?(line_items.first) }
         ]
       end
diff --git a/lib/open_food_network/tag_rule_applicator.rb b/lib/open_food_network/tag_rule_applicator.rb
index fa5f1b6c49..0c01f5dd18 100644
--- a/lib/open_food_network/tag_rule_applicator.rb
+++ b/lib/open_food_network/tag_rule_applicator.rb
@@ -14,7 +14,7 @@ module OpenFoodNetwork
     def filter!(subject)
       return unless subject.respond_to?(:any?) && subject.any?
 
-      subject.reject! do |element|
+      subject.to_a.reject! do |element|
         if rule_class.respond_to?(:tagged_children_for)
           children = rule_class.tagged_children_for(element)
           children.reject! { |child| reject?(child) }
diff --git a/lib/open_food_network/user_balance_calculator.rb b/lib/open_food_network/user_balance_calculator.rb
index 5ce083e10f..98af1600f9 100644
--- a/lib/open_food_network/user_balance_calculator.rb
+++ b/lib/open_food_network/user_balance_calculator.rb
@@ -6,7 +6,7 @@ module OpenFoodNetwork
     end
 
     def balance
-      -completed_orders.sum(&:outstanding_balance)
+      -completed_orders.to_a.sum(&:outstanding_balance)
     end
 
     private
diff --git a/lib/open_food_network/xero_invoices_report.rb b/lib/open_food_network/xero_invoices_report.rb
index 2d6bc80f71..90a43e54c8 100644
--- a/lib/open_food_network/xero_invoices_report.rb
+++ b/lib/open_food_network/xero_invoices_report.rb
@@ -180,11 +180,11 @@ module OpenFoodNetwork
     end
 
     def total_untaxable_products(order)
-      order.line_items.without_tax.sum(&:amount)
+      order.line_items.without_tax.to_a.sum(&:amount)
     end
 
     def total_taxable_products(order)
-      order.line_items.with_tax.sum(&:amount)
+      order.line_items.with_tax.to_a.sum(&:amount)
     end
 
     def total_untaxable_fees(order)
diff --git a/spec/features/admin/bulk_product_update_spec.rb b/spec/features/admin/bulk_product_update_spec.rb
index cc4601385b..f0226d1a61 100644
--- a/spec/features/admin/bulk_product_update_spec.rb
+++ b/spec/features/admin/bulk_product_update_spec.rb
@@ -133,7 +133,7 @@ feature '
       expect(page).to have_selector "a.view-variants", count: 1
       all("a.view-variants").each(&:click)
 
-      expect(page).to have_selector "span[name='on_hand']", text: p1.variants.sum(&:on_hand).to_s
+      expect(page).to have_selector "span[name='on_hand']", text: p1.variants.to_a.sum(&:on_hand).to_s
       expect(page).to have_field "variant_on_hand", with: "15"
       expect(page).to have_field "variant_on_hand", with: "6"
     end
diff --git a/spec/helpers/injection_helper_spec.rb b/spec/helpers/injection_helper_spec.rb
index b502b9b737..e7e0c396b1 100644
--- a/spec/helpers/injection_helper_spec.rb
+++ b/spec/helpers/injection_helper_spec.rb
@@ -11,7 +11,7 @@ describe InjectionHelper, type: :helper do
   let!(:d2o1) { create(:completed_order_with_totals, distributor: distributor2, user_id: user.id) }
 
   it "will inject via AMS" do
-    expect(helper.inject_json_ams("test", [enterprise], Api::IdSerializer)).to match /#{enterprise.id}/
+    expect(helper.inject_json_array("test", [enterprise], Api::IdSerializer)).to match /#{enterprise.id}/
   end
 
   it "injects enterprises" do
diff --git a/spec/lib/open_food_network/tag_rule_applicator_spec.rb b/spec/lib/open_food_network/tag_rule_applicator_spec.rb
index 3f9186dc16..50d8bfe32d 100644
--- a/spec/lib/open_food_network/tag_rule_applicator_spec.rb
+++ b/spec/lib/open_food_network/tag_rule_applicator_spec.rb
@@ -1,4 +1,5 @@
 require 'open_food_network/tag_rule_applicator'
+require 'spec_helper'
 
 module OpenFoodNetwork
   describe TagRuleApplicator do
diff --git a/spec/models/spree/line_item_spec.rb b/spec/models/spree/line_item_spec.rb
index b73c6b104f..a5552bc729 100644
--- a/spec/models/spree/line_item_spec.rb
+++ b/spec/models/spree/line_item_spec.rb
@@ -420,7 +420,7 @@ module Spree
         allow(li).to receive(:price) { 55.55 }
         allow(li).to receive_message_chain(:order, :adjustments, :loaded?)
         allow(li).to receive_message_chain(:order, :adjustments, :select)
-        allow(li).to receive_message_chain(:order, :adjustments, :where, :sum) { 11.11 }
+        allow(li).to receive_message_chain(:order, :adjustments, :where, :to_a, :sum) { 11.11 }
         allow(li).to receive(:quantity) { 2 }
         expect(li.price_with_adjustments).to eq(61.11)
       end
@@ -433,7 +433,7 @@ module Spree
         allow(li).to receive(:price) { 55.55 }
         allow(li).to receive_message_chain(:order, :adjustments, :loaded?)
         allow(li).to receive_message_chain(:order, :adjustments, :select)
-        allow(li).to receive_message_chain(:order, :adjustments, :where, :sum) { 11.11 }
+        allow(li).to receive_message_chain(:order, :adjustments, :where, :to_a, :sum) { 11.11 }
         allow(li).to receive(:quantity) { 2 }
         expect(li.amount_with_adjustments).to eq(122.22)
       end