My attempt at testing a cached Page model

page_cache_spec.rb

# spec/requests/page_cache_spec.rb
require 'spec_helper'

describe "Page cache" do
  # Testing with local cache instead of Memcached for speed
  before(:each) do
    ActionController::Base.perform_caching = true
    ActionController::Base.cache_store = :file_store, "tmp/cache"
    FileUtils.rm_rf(Dir['tmp/cache'])

    @page = create :page, :title => 'The blank page', :body => 'full of text I am, though', :permalink => 'im-a-page'
    @user = create :user
  end

  after(:each) do
    ActionController::Base.perform_caching = false
    FileUtils.rm_rf(Dir['tmp/cache'])
  end

  it "does not prime the page cache if the user is logged in" do
    page_path(@page).is_action_cached?.should be_false

    login @user
    get page_path(@page)

    response.status.should be(200)
    response.body.should have_content 'The blank page'
    response.body.should have_content @user.first_name
    page_path(@page).is_action_cached?.should be_false
  end

  it "primes the page cache if visitor" do
    page_path(@page).is_action_cached?.should be_false

    get page_path(@page)
    response.status.should be(200)
    response.body.should have_content 'The blank page'
    response.body.should_not have_content @user.first_name
    page_path(@page).is_action_cached?.should be_true
    request.path.is_action_cached?.should be_true
    #response.should be_action_cached(request)
  end

  it "show page cache is primed and cleared under correct cicumstances" do
    # 1. Start out with no cache
    page_path(@page).is_action_cached?.should be_false

    # 2. Check to make sure that we do prime the cache if we get the page
    get page_path(@page)
    response.body.should have_content("The blank page")
    request.path.is_action_cached?.should be_true

    # 3. When a page is updated, check to make sure the cache is cleared
    @page.title = "The red page full of letters"
    @page.save!
    request.path.is_action_cached?.should be_false

    # 4. get the page again, make sure we see updated content and that the cache is re-primed
    get page_path(@page)
    response.body.should have_content("The red page full of letters")
    request.path.is_action_cached?.should be_true
  end

  def page_path(page)
    "/paginas/#{page.to_param}"
  end
end