ENV["RAILS_ENV"] = "test"
require File.expand_path(File.dirname(__FILE__) + "/../config/environment")
require 'test_help'

class Test::Unit::TestCase
  self.use_transactional_fixtures = true
  self.use_instantiated_fixtures  = false 

  def assert_valid_isbn(isbn)
    assert(/^\d{9}[\dxX]$/.match(isbn.to_s), "ISBN is invalid")
  end
end