public void Peek_should_seek_buffer()
{
var chars = Autofixture.CreateMany <char>(10).ToList();
var enumerator = chars.GetEnumerator();
var seeker = new BufferedSeeker(enumerator);
// Act
seeker.Peek();
var result = seeker.Peek();
// Assert
result.Should().Be(chars.Skip(1).First());
seeker.PeakIndex.Should().Be(2);
}
public void Backtrack_peek_should_move_peek_index_backwards()
{
var chars = Autofixture.CreateMany <char>(10).ToList();
var enumerator = chars.GetEnumerator();
var seeker = new BufferedSeeker(enumerator);
// Act
seeker.Peek();
seeker.Peek();
seeker.BacktrackPeek(2);
var result = seeker.Peek();
// Assert
result.Should().Be(chars.First());
seeker.PeakIndex.Should().Be(1);
}