# File test/test_params.rb, line 2446
    def test_delete_at
      @store['filters'] = [
        { 'filter' => 'Foo',
          'arguments' => {},
          'attach_path' => nil,
          'attach_mask' => nil,
          'virtual_host' => nil,
          'comment' => nil
        }
      ]
      @filter_list.load(@properties)
      assert(! @filter_list.empty?)
      assert_equal(1, @filter_list.size)
      assert_equal(1, @filter_list.length)
      assert_equal('Foo', @filter_list[0].name)
      @filter_list.delete_at(0)
      assert(@filter_list.empty?)
      assert_equal(0, @filter_list.size)
      assert_equal(0, @filter_list.length)
    end