public void ToDigit()
{
Assert.AreEqual(CharBuffer.ToDigit('0'), 0);
Assert.AreEqual(CharBuffer.ToDigit('1'), 1);
Assert.AreEqual(CharBuffer.ToDigit('2'), 2);
Assert.AreEqual(CharBuffer.ToDigit('3'), 3);
Assert.AreEqual(CharBuffer.ToDigit('4'), 4);
Assert.AreEqual(CharBuffer.ToDigit('5'), 5);
Assert.AreEqual(CharBuffer.ToDigit('6'), 6);
Assert.AreEqual(CharBuffer.ToDigit('7'), 7);
Assert.AreEqual(CharBuffer.ToDigit('8'), 8);
Assert.AreEqual(CharBuffer.ToDigit('9'), 9);
}
