require File.expand_path(File.dirname(__FILE__) + '/../test_helper') module Functional class ValidatesPresenceOfTest < Test::Unit::TestCase test "given no name, when validated, then error is in the objects error collection" do klass = Class.new do include Validatable attr_accessor :name validates_presence_of :name end instance = klass.new instance.valid? assert_equal "can't be empty", instance.errors.on(:name) end end end