controller_spec.rb

require 'active_record'

unless defined?(Page)
  class Page < ActiveRecord::Base; end
end

unless defined?(ApplicationController)
  class ApplicationController; end
end

require 'ostruct'
require './app/helpers/pages_helper'
require './app/controllers/pages_controller'

describe PagesController do
  let(:request) do
    OpenStruct.new(:path => '/hello/world')
  end

  let(:page) { stub }
  let(:controller) { PagesController.new }

  before :each do
    controller.stub(:request) { request }
    controller.stub(:render)
    controller.stub(:top_ancestor_for) { page }
    page.stub_chain(:children, :visible) { [] }
  end

  describe "GET show" do
    it "finds the page by slug from the path" do
      Page.should_receive(:where)
          .with(:slug => 'world')
          .and_return([page])

      page.stub(:drafted? => false)

      controller.send(:show)
    end

    it "returns 404 for pages that are drafted" do
      Page.stub(:where) { [page] }

      page.stub(:drafted? => true)

      controller.should_receive(:render)
                .with(:template => 'pages/error_404',
                      :status => 404)

      controller.send(:show)
    end

    it "returns 404 for pages that are not found" do
      Page.stub(:where) { [] }

      controller.should_receive(:render)
                .with(:template => 'pages/error_404',
                      :status => 404)

      controller.send(:show)
    end
  end
end