instance method assert_valid_enum_definition_values

# File activerecord/lib/active_record/enum.rb, line 335
      def assert_valid_enum_definition_values(values)
        case values
        when Hash
          if values.empty?
            raise ArgumentError, "Enum values #{values} must not be empty."
          end

          if values.keys.any?(&:blank?)
            raise ArgumentError, "Enum values #{values} must not contain a blank name."
          end
        when Array
          if values.empty?
            raise ArgumentError, "Enum values #{values} must not be empty."
          end

          unless values.all?(Symbol) || values.all?(String)
            raise ArgumentError, "Enum values #{values} must only contain symbols or strings."
          end

          if values.any?(&:blank?)
            raise ArgumentError, "Enum values #{values} must not contain a blank name."
          end
        else
          raise ArgumentError, "Enum values #{values} must be either a non-empty hash or an array."
        end
      end