public void GetNextAsDigit()
{
CharBuffer buffer = CharBuffer.FromString("c1");
Assert.IsFalse(buffer.NextIsDigit());
Assert.AreEqual(buffer.Get(), 'c');
Assert.IsTrue(buffer.NextIsDigit());
Assert.AreEqual(buffer.GetNextAsDigit(), 1);
Assert.IsTrue(buffer.NextIsDigit());
Assert.AreEqual(buffer.GetAsDigit(), 1);
Assert.IsFalse(buffer.NextIsDigit());
}