thoughtbot--factory_bot/lib/factory_bot/null_factory.rb

module FactoryBot
  # @api private
  class NullFactory
    attr_reader :definition

    def initialize
      @definition = Definition.new(:null_factory)
    end

    delegate :defined_traits, :callbacks, :attributes, :constructor,
             :to_create, to: :definition

    def compile; end

    def class_name; end

    def evaluator_class; FactoryBot::Evaluator; end

    def hierarchy_class; FactoryBot::DefinitionHierarchy; end
  end
end