advert_spec.rb

describe Advert do
  before do
    @owner = User.new
    @advert = Advert.new(:user => @owner)
  end
  
  describe "permissions" do
    describe "for anonymous users" do
      before do
        @user = nil
      end
      
      it "don't allow viewing" do
        @advert.should_not be_viewable_by(@user)
      end
    end
    
    describe "for admins" do
      before do
        @user = User.new(:role => 'admin')
      end
      
      it "allows viewing" do
        @advert.should be_viewable_by(@user)
      end
    end
  end
end