Reuse the view_context from the controller, this make the test enviro…

…nment more similar to the code applications uses

actionpack/lib/action_view/test_case.rb

@@ -153,11 +153,8 @@ def _render_partial(options)
       # The instance of ActionView::Base that is used by +render+.
       def view
         @view ||= begin
-                     view = ActionView::Base.new(ActionController::Base.view_paths, {}, @controller)
-                     view.singleton_class.send :include, @controller._helpers
+                     view = @controller.view_context
                      view.singleton_class.send :include, _helpers
-                     view.singleton_class.send :include, @controller._routes.url_helpers
-                     view.singleton_class.send :delegate, :alert, :notice, :to => "request.flash"
                      view.extend(Locals)
                      view.locals = self.locals
                      view.output_buffer = self.output_buffer