public void UnlexedRuleTest()
{
LexResultGroup lexedSource = _testLexer.Lex(" samIAm ");
LexResultValidator checker = lexed => lexed.MatchType == LexMatchType.None;
LexResultParser parser = lexed => {
return(DetailedParseResult.CreateError(
new ASTNode(ParseMatchType.None, lexed),
$"Unlexed token `{lexed.Text}' detected at character {lexed.Start}."
));
};
IParseRule unlexedTokenRule = new ParseRule(checker, parser);
DetailedParseResult result = unlexedTokenRule.Parse(lexedSource[1]) as DetailedParseResult;
Assert.AreEqual("Unlexed token `samIAm' detected at character 3.", result.Message);
}