3 files changed, 7 insertions, 6 deletions
diff --git a/actionpack/lib/action_controller/metal/strong_parameters.rb b/actionpack/lib/action_controller/metal/strong_parameters.rb
index 6e8df02fb9..d304dcf468 100644
--- a/actionpack/lib/action_controller/metal/strong_parameters.rb
+++ b/actionpack/lib/action_controller/metal/strong_parameters.rb
@@ -398,8 +398,7 @@ module ActionController
 
       unpermitted_parameters!(params) if self.class.action_on_unpermitted_parameters
 
-      params.permitted = true
-      params
+      params.permit!
     end
 
     # Returns a parameter for the given +key+. If not found,
@@ -818,7 +817,6 @@ module ActionController
               # Filter this one out.
             end
           end
-          sanitized.permitted = true
         end
       end
 
diff --git a/actionpack/lib/action_controller/renderer.rb b/actionpack/lib/action_controller/renderer.rb
index 3ff80e6a39..acb400cd15 100644
--- a/actionpack/lib/action_controller/renderer.rb
+++ b/actionpack/lib/action_controller/renderer.rb
@@ -60,7 +60,8 @@ module ActionController
     end
 
     # Accepts a custom Rack environment to render templates in.
-    # It will be merged with ActionController::Renderer.defaults
+    # It will be merged with the default Rack environment defined by
+    # +ActionController::Renderer::DEFAULTS+.
     def initialize(controller, env, defaults)
       @controller = controller
       @defaults = defaults
diff --git a/actionpack/lib/action_controller/test_case.rb b/actionpack/lib/action_controller/test_case.rb
index 57dd605b51..7229c67f30 100644
--- a/actionpack/lib/action_controller/test_case.rb
+++ b/actionpack/lib/action_controller/test_case.rb
@@ -389,7 +389,9 @@ module ActionController
       # Note that the request method is not verified. The different methods are
       # available to make the tests more expressive.
       def get(action, **args)
-        process(action, method: "GET", **args)
+        res = process(action, method: "GET", **args)
+        cookies.update res.cookies
+        res
       end
 
       # Simulate a POST request with the given parameters and set/volley the response.
@@ -517,7 +519,6 @@ module ActionController
             unless @request.cookie_jar.committed?
               @request.cookie_jar.write(@response)
               cookies.update(@request.cookie_jar.instance_variable_get(:@cookies))
-              cookies.update(@response.cookies)
             end
           end
           @response.prepare!
@@ -533,6 +534,7 @@ module ActionController
             @request.delete_header "HTTP_ACCEPT"
           end
           @request.query_string = ""
+          @request.env.delete "PATH_INFO"
 
           @response.sent!
         end