1 files changed, 9 insertions, 12 deletions
diff --git a/actionpack/lib/action_dispatch/testing/test_response.rb b/actionpack/lib/action_dispatch/testing/test_response.rb
index 9d4b73a43d..6f7c86fdcf 100644
--- a/actionpack/lib/action_dispatch/testing/test_response.rb
+++ b/actionpack/lib/action_dispatch/testing/test_response.rb
@@ -1,3 +1,7 @@
+# frozen_string_literal: true
+
+require "action_dispatch/testing/request_encoder"
+
 module ActionDispatch
   # Integration test methods such as ActionDispatch::Integration::Session#get
   # and ActionDispatch::Integration::Session#post return objects of class
@@ -10,19 +14,12 @@ module ActionDispatch
       new response.status, response.headers, response.body
     end
 
-    # Was the response successful?
-    alias_method :success?, :successful?
-
-    # Was the URL not found?
-    alias_method :missing?, :not_found?
-
-    # Was there a server-side error?
-    alias_method :error?, :server_error?
-
-    attr_writer :response_parser # :nodoc:
-
     def parsed_body
-      @parsed_body ||= @response_parser.call(body)
+      @parsed_body ||= response_parser.call(body)
+    end
+
+    def response_parser
+      @response_parser ||= RequestEncoder.parser(content_type)
     end
   end
 end