show error for cross-environment API key usage

spec/factories/accounts.rb

@@ -5,5 +5,14 @@ FactoryBot.define do
     name { Faker::Company.name }
     locale { 'en-US' }
     timezone { 'UTC' }
+
+    trait :with_testing_account do
+      after(:create) do |account|
+        testing_account = account.dup.tap { |a| a.name = "Testing - #{account.name}" }
+        testing_account.uuid = SecureRandom.uuid
+        account.testing_accounts << testing_account
+        account.save!
+      end
+    end
   end
 end