books_controller.rb

class BooksController < ApplicationController

	before_filter do |controller|
		#binding.pry
		if(Book.find_by_slug(params[:id]).published? && current_user.is_admin?)
			flash[:warning] = "Please login as admin to view this page"
			redirect_to root_path
		end
	end

  def show
    @book = Book.find_by_slug(params[:id]) or raise "No such book '#{params[:id]}'"
    @comments = @book.comments.reversed_nested_set.with_state([:draft, :published])
  end

  def subscribed
    @book = Book.find_by_slug(params[:id]) or raise "No such book '#{params[:id]}'"
  end


end

Feature

 Scenario: Book is private
    Given there is a published book
    And the book is private
    When I visit the book
    Then I should be on the home page

Steps

When(/^I visit the book$/) do
  # no online reader for now
  visit book_path(Book.first)
end