# TestHelpful

class Test::Unit::TestCase

  include ActionController::PolymorphicRoutes
  include ActionController::RecordIdentifier

  def assert_form(instance, *attrs)
    name = singular_class_name(instance)
    assert_select("form[action=#{polymorphic_path(instance)}]") do
      attrs.each do |attr|
        assert_select("##{name}_#{attr}[name=?]", "#{name}[#{attr}]")
      end
      assert_select("input[type=submit]")
    end
  end


  def create_by_model(type, default_options, options = { })
    type.create(default_options.merge(options))
  end

  def create_by_controller(type, default_options, options = { })
    post :create, type.to_sym => default_options.merge(options)
  end

  def model_name
    classname = self.class.name
    classname.gsub!(/ControllerTest/, "")
    classname.gsub!(/Test/, "")
    classname.singularize
  end

  def create(options = { })
    attr_var = eval("@@#{model_name.downcase}_default_attr ||= {}")
    if self.class.name =~ /Controller/
      create_by_controller(model_name.downcase, attr_var, options)
      assigns(model_name.downcase.to_sym)
    else
      create_by_model(eval(model_name), attr_var,options)
    end
  end

  def assert_errors_on(model, *attrs)
    attrs.each do |attr|
      assert model.errors.on(attr), "#{attr} has no error"
    end
  end

   # Sets the current user in the session from the user fixtures.
  def login_as(user)
    @request.session[:user] = user ? users(user).id : nil
  end


end