public void TestMethod2()
{
PrefixTree T = new PrefixTree();
T.AddValue("abracadabra");
T.AddValue("abbar");
T.AddValue("abce");
T.AddValue("sort");
T.AddValue("sortset");
T.Remove("sort");
T.Remove("abce");
List <string> res = new List <string>();
T.AllToList(ref res);
List <string> trueAnswer = new List <string>();
trueAnswer.Add("abbar");
trueAnswer.Add("abracadabra");
trueAnswer.Add("sortset");
CollectionAssert.AreEqual(res, trueAnswer);
}