public void Reconhece_Caractere_Invalido()
{
var element = new CharGrammarElement('a');
var extractor = TokenExtractor.FromString("A");
var token = element.Eval(extractor);
Assert.Null(token);
}
public void Reconhece_Caractere_Valido(char validChar)
{
var element = new CharGrammarElement(validChar);
var onCharString = new string(new[] { validChar });
var extractor = TokenExtractor.FromString(onCharString);
var token = element.Eval(extractor);
Assert.NotNull(token);
Assert.Equal(validChar, token.Content);
}