module MiscHelpers
  def store_translations(locale, translations, &block)
    begin
      I18n.backend.store_translations locale, translations
      yield
    ensure
      I18n.reload!
    end
  end

  def assert_no_select(*args)
    assert_raise Test::Unit::AssertionFailedError do
      assert_select(*args)
    end
  end

  def swap(object, new_values)
    old_values = {}
    new_values.each do |key, value|
      old_values[key] = object.send key
      object.send :"#{key}=", value
    end
    yield
  ensure
    old_values.each do |key, value|
      object.send :"#{key}=", value
    end
  end
end