public void IsDigit()
{
for (char c = '0'; c <= '9'; c++)
{
Assert.IsTrue(CharBuffer.IsDigit(c));
}
for (char c = 'a'; c <= 'z'; c++)
{
Assert.IsFalse(CharBuffer.IsDigit(c));
}
for (char c = 'A'; c <= 'Z'; c++)
{
Assert.IsFalse(CharBuffer.IsDigit(c));
}
}
