public void is_at_end()
{
var scanner = new BlockCommentScanner("<!--", "-->", "spark", "lang-htm");
scanner.IsAtEnd("<!-- SAMPLE: something").ShouldBeFalse();
scanner.IsAtEnd("<p>some html</p>").ShouldBeFalse();
scanner.IsAtEnd("ENDSAMPLE").ShouldBeFalse();
scanner.IsAtEnd("<!-- ENDSAMPLE -->").ShouldBeTrue();
}