WIP

Author: solnic

sentry-rails/spec/dummy/test_rails_app/config/applications/latest.rb

@@ -41,5 +41,22 @@ def before_initialize!
 
       super
     end
+
+    def after_initialize!
+      super
+      # ActiveSupport uses @loaded and @run_once to track what has been loaded/executed.
+      # These accumulate between test runs and can cause state from one test to leak into subsequent tests.
+      # We clear them AFTER initialization completes (including config.after_initialize callbacks) to prevent leaks.
+      # Note: We don't clear @load_hooks here as they are needed for lazy loading and are registered when
+      # railtie classes are loaded, not during initialization. Clearing them would break lazy loading.
+      # Instead, @load_hooks are naturally clean between tests since each test creates a new application instance.
+      if ActiveSupport.instance_variable_defined?(:@loaded)
+        ActiveSupport.instance_variable_set(:@loaded, Hash.new { |h, k| h[k] = [] })
+      end
+
+      if ActiveSupport.instance_variable_defined?(:@run_once)
+        ActiveSupport.instance_variable_set(:@run_once, Hash.new { |h, k| h[k] = [] })
+      end
+    end
   end
 end