instance method read_fixture_files

# File activerecord/lib/active_record/fixtures.rb, line 777
      def read_fixture_files(path)
        yaml_files = Dir["#{path}{.yml,/{**,*}/*.yml}"].select { |f|
          ::File.file?(f)
        }

        raise ArgumentError, "No fixture files found for #{@name}" if yaml_files.empty?

        yaml_files.each_with_object({}) do |file, fixtures|
          FixtureSet::File.open(file) do |fh|
            self.model_class ||= fh.model_class if fh.model_class
            self.model_class ||= default_fixture_model_class
            self.ignored_fixtures ||= fh.ignored_fixtures
            fh.each do |fixture_name, row|
              fixtures[fixture_name] = ActiveRecord::Fixture.new(row, model_class)
            end
          end
        end
      end