public void check_deep_clone()
{
var input = @"
global = 1
[section]
key = 1
";
var ori = new IniDataParser().Parse(input);
var copy = (IniData)ori.Clone();
copy.Global["global"] = "2";
copy["section"]["key"] = "2";
Assert.That(ori.Global["global"], Is.EqualTo("1"));
Assert.That(ori["section"]["key"], Is.EqualTo("1"));
}