public void Reconhece_ListaInvalida_AoAvaliar(string text)
{
var list = new[]
{
new CharGrammarElement('1'),
new CharGrammarElement('2'),
new CharGrammarElement('3')
};
var grammar = new OrListGrammarElement(list);
var extractor = TokenExtractor.FromString(text);
var token = grammar.Eval(extractor);
Assert.Null(token);
}
public void Reconhece_ListaValida_AoAvaliar(string text)
{
var list = new[]
{
new CharGrammarElement('a'),
new CharGrammarElement('b'),
new CharGrammarElement('c')
};
var grammar = new OrListGrammarElement(list);
var extractor = TokenExtractor.FromString(text);
var token = grammar.Eval(extractor);
Assert.NotNull(token);
Assert.IsType <char>(token.Content);
Assert.Contains((char)token.Content, new char[] { 'a', 'b', 'c' });
}
public void Reconhece_TodosTokens_Validos()
{
var blanks = new OrListGrammarElement(new[] {
new CharGrammarElement(' '),
new CharGrammarElement('\t'),
});
var grammar = new WhileGrammarElement(blanks);
var extractor = TokenExtractor.FromString(" \t \t \t final!");
var token = grammar.Eval(extractor);
Assert.NotNull(token);
Assert.IsType <Token[]>(token.Content);
Assert.Equal(11, (token.Content as Token[]).Length);
Assert.Equal(" \t \t \t ", (token.Content as Token[]).Aggregate("", (current, tk) =>
{
return(current + tk.Content.ToString());
}));
}
public void Reconhece_QualquerDosTokensNaLista()
{
var list = new[]
{
new CharGrammarElement('a'),
new CharGrammarElement('b'),
new CharGrammarElement('c')
};
var grammar = new OrListGrammarElement(list);
var extractorOk = TokenExtractor.FromString("cba");
var tk1Ok = grammar.Eval(extractorOk);
var tk2Ok = grammar.Eval(extractorOk);
var tk3Ok = grammar.Eval(extractorOk);
var extractorErr = TokenExtractor.FromString("acx");
var tk1Err = grammar.Eval(extractorErr);
var tk2Err = grammar.Eval(extractorErr);
var tk3Err = grammar.Eval(extractorErr);
// Ok
Assert.NotNull(tk1Ok);
Assert.NotNull(tk2Ok);
Assert.NotNull(tk3Ok);
Assert.Equal('c', (char)tk1Ok.Content);
Assert.Equal('b', (char)tk2Ok.Content);
Assert.Equal('a', (char)tk3Ok.Content);
// Erro
Assert.NotNull(tk1Err);
Assert.NotNull(tk2Err);
Assert.Null(tk3Err);
Assert.Equal('a', (char)tk1Err.Content);
Assert.Equal('c', (char)tk2Err.Content);
}
