Break lambda arity test in to two parts

Looks like the test request object isn't being recycled properly and
is leaking information from one request to the next about formats.

Author: pixeltrix

test/caching_test.rb

@@ -811,16 +811,21 @@ def test_explicit_html_format_is_used_for_fragment_path
     assert_not_cached cached_time
   end
 
-  def test_lambda_arity
+  def test_lambda_arity_with_cache_path
     draw do
       get "/action_caching_test/not_url_cache_path_no_args", to: "action_caching_test#not_url_cache_path_no_args"
-      get "/action_caching_test/with_layout_proc_param_no_args", to: "action_caching_test#with_layout_proc_param_no_args"
     end
 
     get :not_url_cache_path_no_args
     assert_response :success
     assert !fragment_exist?("test.host/action_caching_test/not_url_cache_path_no_args")
     assert fragment_exist?("not_url_cache_path_no_args_key")
+  end
+
+  def test_lambda_arity_with_layout
+    draw do
+      get "/action_caching_test/with_layout_proc_param_no_args", to: "action_caching_test#with_layout_proc_param_no_args"
+    end
 
     get :with_layout_proc_param_no_args, params: { title: "Request 1", layout: "false" }
     assert_response :success