public void ReadAndPeek()
{
StringScanner scanner = new StringScanner(Text);
int i=0;
while (!scanner.AtEnd)
{
Assert.Less(i, Text.Length);
Assert.AreEqual(Text[i], scanner.Peek());
scanner.Read();
++i;
}
Assert.AreEqual(Text.Length, i);
}
public void Offset_IncrementedAfterRead()
{
StringScanner scanner = new StringScanner(Text);
scanner.Read();
Assert.AreEqual(1,scanner.Offset);
}
public void Read_AtEnd_Throws()
{
StringScanner scanner = new StringScanner(Text);
scanner.Seek(Text.Length);
Assert.IsTrue(scanner.AtEnd);
Assert.Throws<InvalidOperationException>(
() => scanner.Read());
}