Fix rate limiting in tests

config/environments/test.rb

@@ -28,6 +28,9 @@
   config.action_controller.perform_caching = false
   config.cache_store = :null_store
 
+  # Use memory store for rate limiting (null_store silently disables it)
+  config.action_controller.cache_store = :memory_store
+
   # Render exception templates for rescuable exceptions and raise for other exceptions.
   config.action_dispatch.show_exceptions = :rescuable
 

test/controllers/join_codes_controller_test.rb

@@ -96,7 +96,7 @@ class JoinCodesControllerTest < ActionDispatch::IntegrationTest
   end
 
   test "create is rate limited" do
-    Rails.cache.stubs(:increment).returns(11)
+    ActionController::Base.cache_store.stubs(:increment).returns(11)
 
     post join_path(code: @join_code.code, script_name: @account.slug), params: { email_address: "[email protected]" }
 

test/test_helper.rb

@@ -60,6 +60,7 @@ class TestCase
 class ActionDispatch::IntegrationTest
   setup do
     integration_session.default_url_options[:script_name] = "/#{ActiveRecord::FixtureSet.identify("37signals")}"
+    ActionController::Base.cache_store.clear
   end
 
   private