gistfile1.rb

describe "Mocking/Stubbing Associations with RSpec" do
  it "can be done with proxy_target" do
    # Suppose the Article model has an after_save callback that invokes notify_change on the author
    # if the article has been changed.
    @article.author.proxy_target.should_receive(:notify_change)
    @article.update_attributes(:body => "new body")
  end
end