posts_controller_shared_spy.rb

module PostHelpers
  def stub_post(post_attrs = {})
    post_attrs = {
      :to_param   => '1',
      :published? => true,
      :title      => 'a title'
    }.update(post_attrs)
    stub('a post', post_attrs)
  end

  def stub_post!(post_attrs = {})
    returning stub_post do |post|
      Post.stubs(:find => post)
    end
  end
end

describe PostsController do
  include PostHelpers
  it "should show a published post on GET show" do
    post = stub_post!
    get :show, :id => post.to_param
    Post.should have_received(:find).with(post.to_param)
    post.should have_received(:published?)
    should render_template(:show)
    should assign_to(:post).with(post)
  end
end

describe "/posts/show" do
  include PostHelpers
  it "should a post" do
    assigns[:post] = stub_post
    render '/posts/show'
    template.should have_tag('h1', assigns[:post].title)
  end
end