2 files changed, 12 insertions, 15 deletions
diff --git a/actionpack/lib/action_dispatch/testing/assertions/response.rb b/actionpack/lib/action_dispatch/testing/assertions/response.rb
index 68feb26936..0adc6c84ff 100644
--- a/actionpack/lib/action_dispatch/testing/assertions/response.rb
+++ b/actionpack/lib/action_dispatch/testing/assertions/response.rb
@@ -73,7 +73,13 @@ module ActionDispatch
           if Regexp === fragment
             fragment
           else
-            @controller._compute_redirect_to_location(fragment)
+            handle = @controller || Class.new(ActionController::Metal) do
+              include ActionController::Redirecting
+              def initialize(request)
+                @_request = request
+              end
+            end.new(@request)
+            handle._compute_redirect_to_location(fragment)
           end
         end
     end
diff --git a/actionpack/lib/action_dispatch/testing/integration.rb b/actionpack/lib/action_dispatch/testing/integration.rb
index cc6b763093..af3bc26691 100644
--- a/actionpack/lib/action_dispatch/testing/integration.rb
+++ b/actionpack/lib/action_dispatch/testing/integration.rb
@@ -3,7 +3,6 @@ require 'uri'
 require 'active_support/core_ext/kernel/singleton_class'
 require 'active_support/core_ext/object/try'
 require 'rack/test'
-require 'minitest'
 
 module ActionDispatch
   module Integration #:nodoc:
@@ -270,12 +269,6 @@ module ActionDispatch
             path = location.query ? "#{location.path}?#{location.query}" : location.path
           end
 
-          unless ActionController::Base < ActionController::Testing
-            ActionController::Base.class_eval do
-              include ActionController::Testing
-            end
-          end
-
           hostname, port = host.split(':')
 
           env = {
@@ -300,13 +293,7 @@ module ActionDispatch
 
           # NOTE: rack-test v0.5 doesn't build a default uri correctly
           # Make sure requested path is always a full uri
-          uri = URI.parse('/')
-          uri.scheme ||= env['rack.url_scheme']
-          uri.host   ||= env['SERVER_NAME']
-          uri.port   ||= env['SERVER_PORT'].try(:to_i)
-          uri += path
-
-          session.request(uri.to_s, env)
+          session.request(build_full_uri(path, env), env)
 
           @request_count += 1
           @request  = ActionDispatch::Request.new(session.last_request.env)
@@ -319,6 +306,10 @@ module ActionDispatch
 
           return response.status
         end
+
+        def build_full_uri(path, env)
+          "#{env['rack.url_scheme']}://#{env['SERVER_NAME']}:#{env['SERVER_PORT']}#{path}"
+        end
     end
 
     module Runner