```ruby
module Spree
  module TestingSupport
    module AuthorizationHelpers
      module CustomAbility
        def build_ability(&block)
          block ||= proc{ |u| can :manage, :all }
          Class.new do
            include CanCan::Ability
            define_method(:initialize, block)
          end
        end
      end

      module Controller
        include CustomAbility

        def stub_authorization!(&block)
          ability_class = build_ability(&block)
          before do
            controller.stub(:current_ability).and_return{ ability_class.new(nil) }
          end
        end
      end

      module Request
        include CustomAbility

        def stub_authorization!
          ability = build_ability

          after(:all) do
            Spree::Ability.remove_ability(ability)
          end

          before(:all) do
            Spree::Ability.register_ability(ability)
          end

          before do
            Api::BaseController.any_instance.stub :try_spree_current_user => Spree.user_class.new
          end
        end

        def custom_authorization!(&block)
          ability = build_ability(&block)
          after(:all) do
            Spree::Ability.remove_ability(ability)
          end
          before(:all) do
            Spree::Ability.register_ability(ability)
          end
        end
      end
    end
  end
end

RSpec.configure do |config|
  config.extend Spree::TestingSupport::AuthorizationHelpers::Controller, :type => :controller
  config.extend Spree::TestingSupport::AuthorizationHelpers::Request, :type => :feature
end
```

Switch to rspec expect syntax in AuthorizationHelpers.
user
```ruby
module Spree
  module TestingSupport
    module AuthorizationHelpers
      module CustomAbility
        def build_ability(&block)
          block ||= proc{ |u| can :manage, :all }
          Class.new do
            include CanCan::Ability
            define_method(:initialize, block)
          end
        end
      end

      module Controller
        include CustomAbility

        def stub_authorization!(&block)
          ability_class = build_ability(&block)
          before do
            allow(controller).to receive(:current_ability).and_return{ ability_class.new(nil) }
          end
        end
      end

      module Request
        include CustomAbility

        def stub_authorization!
          ability = build_ability

          after(:all) do
            Spree::Ability.remove_ability(ability)
          end

          before(:all) do
            Spree::Ability.register_ability(ability)
          end

          before do
            allow_any_instance_of(Api::BaseController).to receive(:try_spree_current_user).and_return(Spree.user_class.new)
          end
        end

        def custom_authorization!(&block)
          ability = build_ability(&block)
          after(:all) do
            Spree::Ability.remove_ability(ability)
          end
          before(:all) do
            Spree::Ability.register_ability(ability)
          end
        end
      end
    end
  end
end

RSpec.configure do |config|
  config.extend Spree::TestingSupport::AuthorizationHelpers::Controller, :type => :controller
  config.extend Spree::TestingSupport::AuthorizationHelpers::Request, :type => :feature
end
```
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