A test for AR::Base.inherited

Ensure that Kaminari does not conflict with other gems that extend the inherited hook

spec/fake_gem.rb

@@ -1,4 +1,20 @@
-# Simulate a gem providing a subclass of ActiveRecord::Base before the Railtie is loaded.
+module Kaminari
+  module FakeGem
+    extend ActiveSupport::Concern
 
-class GemDefinedModel < ActiveRecord::Base
+    module ClassMethods
+      def inherited(kls)
+        super
+        def kls.fake_gem_defined_method; end
+      end
+    end
+  end
+end
+
+ActiveSupport.on_load :active_record do
+  ActiveRecord::Base.send :include, Kaminari::FakeGem
+
+  # Simulate a gem providing a subclass of ActiveRecord::Base before the Railtie is loaded.
+  class GemDefinedModel < ActiveRecord::Base
+  end
 end