# File test/test_restart.rb, line 28
    def test_notify_restart
      th_grp = ThreadGroup.new
      begin
        10.times do
          th_grp.add Thread.new{
            @restart_signal.notify_restart
          }
        end
        @restart_signal.wait
        assert_equal(1, @restart_call)
      ensure
        for th in th_grp.list
          th.join
        end
      end
      assert_equal(1, @restart_call)
    end