public void Test_DecodeLastRune_Extension()
{
ustring us = "Hello, 世界";
List <Rune> runes = new List <Rune>();
int tSize = 0;
for (int i = us.RuneCount - 1; i >= 0; i--)
{
(Rune rune, int size) = Rune.DecodeLastRune(us.RuneSubstring(i, 1));
runes.Add(rune);
tSize += size;
}
ustring result = ustring.Make(runes);
Assert.AreEqual("界世 ,olleH", result);
Assert.AreEqual(13, tSize);
}
