fix: shopify and locale spec

spec/controllers/shopify/callbacks_controller_spec.rb

@@ -94,10 +94,8 @@ RSpec.describe Shopify::CallbacksController, type: :request do
 
     context 'when state parameter is invalid' do
       before do
-        controller = described_class.new
-        allow(controller).to receive(:verify_shopify_token).with(state).and_return(nil)
-        allow(controller).to receive(:account).and_return(nil)
-        allow(described_class).to receive(:new).and_return(controller)
+        allow_any_instance_of(Shopify::CallbacksController).to receive(:verify_shopify_token).and_return(nil)
+        allow_any_instance_of(Shopify::CallbacksController).to receive(:account).and_return(nil)
       end
 
       it 'redirects to the frontend URL with error' do

spec/models/concerns/switch_locale_spec.rb

@@ -81,15 +81,14 @@ RSpec.describe 'SwitchLocale Concern', type: :controller do
   end
 
   describe '#switch_locale_using_account_locale' do
+    before do
+      routes.draw { get 'account_locale' => 'anonymous#account_locale' }
+    end
+
     it 'sets locale from account' do
       controller.instance_variable_set(:@current_account, account)
-
-      result = nil
-      controller.send(:switch_locale_using_account_locale) do
-        result = I18n.locale.to_s
-      end
-
-      expect(result).to eq('es')
+      get :account_locale
+      expect(response.body).to eq('es')
     end
   end
 end