# File test/test_params.rb, line 1650
    def test_argument_bool
      init_arguments
      assert_equal(true, @entry.args[5])
      @entry.set_arg_at(5, false)
      assert_equal(false, @entry.args[5])
      assert_exception(RuntimeError) {
        @entry.set_arg_at(5, nil)
      }
      assert_exception(RuntimeError) {
        @entry.set_arg_at(5, 'true')
      }
    end