public void AddMultiple()
{
XFastTrie<string> trie = new XFastTrie<string>();
trie.Add(1, "1");
trie.Add(2, "2");
trie.Add(31, "31");
trie.Add(3, "3");
trie.Add(4, "4");
trie.Add(5, "5");
trie.Add(6, "6");
trie.Add(27, "27");
trie.Add(21, "21");
trie.Add(19, "19");
Assert.AreEqual(trie[1], "1");
Assert.AreEqual(trie[2], "2");
Assert.AreEqual(trie[31], "31");
Assert.AreEqual(trie[3], "3");
Assert.AreEqual(trie[4], "4");
Assert.AreEqual(trie[5], "5");
Assert.AreEqual(trie[6], "6");
Assert.AreEqual(trie[27], "27");
Assert.AreEqual(trie[21], "21");
Assert.AreEqual(trie[19], "19");
}