Send cookies with request

actionpack/lib/action_controller/test_case.rb

@@ -317,7 +317,9 @@ def determine_default_controller_class(name)
       # Note that the request method is not verified. The different methods are
       # available to make the tests more expressive.
       def get(action, *args)
-        process_with_kwargs("GET", action, *args)
+        res = process_with_kwargs("GET", action, *args)
+        cookies.update res.cookies
+        res
       end
 
       # Simulate a POST request with the given parameters and set/volley the response.
@@ -482,6 +484,7 @@ def process(action, *args)
         if cookies = @request.env['action_dispatch.cookies']
           unless @response.committed?
             cookies.write(@response)
+            self.cookies.update(cookies.instance_variable_get(:@cookies))
           end
         end
         @response.prepare!

actionpack/lib/action_dispatch/middleware/cookies.rb

@@ -279,6 +279,10 @@ def update(other_hash)
         self
       end
 
+      def to_header
+        @cookies.map { |k,v| "#{k}=#{v}" }.join ';'
+      end
+
       def handle_options(options) #:nodoc:
         options[:path] ||= "/"
 

actionpack/lib/action_dispatch/testing/test_process.rb

@@ -19,7 +19,7 @@ def flash
     end
 
     def cookies
-      @request.cookie_jar
+      @cookie_jar ||= Cookies::CookieJar.build(@request.env, @request.host, @request.ssl?, @request.cookies)
     end
 
     def redirect_to_url