Controller specs, by default, do not render views. This helps keep the
controller specs focused on the controller. Use render_views instead of
rspec-1's integrate_views to tell the spec to render the views:
describe WidgetController do
render_views
describe "GET index" do
...
Rails changed the way it renders partials, so to set an expectation that a partial gets rendered:
view.should_receive(:_render_partial).
with(hash_including(:partial => "widget/row"))