public void WithXOr_WhenFirstOptionFailsAndConsumesInput_SecondOptionNotTried()
{
var first = Parse.Char('a').Once().Concat(Parse.Char('b').Once());
var second = Parse.Char('a').Once();
var p = first.XOr(second);
AssertParser.FailsAt(p, "a", 1);
}
public void WithXMany_WhenLastElementFails_FailureReportedAtLastElement()
{
var ab = from a in Parse.Char('a')
from b in Parse.Char('b')
select "ab";
var p = ab.XMany().End();
AssertParser.FailsAt(p, "ababaf", 5);
}
public void NotParserConsumesNoInputOnFailure()
{
var notAb = Parse.String("ab").Text().Not();
AssertParser.FailsAt(notAb, "abc", 0);
}
public void XAtLeastOnceParser_WhenFirstElementFails_FailureReportedAtFirstElement()
{
var ab = Parse.String("ab").Text();
var p = ab.XAtLeastOnce().End();
AssertParser.FailsAt(p, "d", 0);
}
public void Parser_OfChar_DoesNotAcceptNonMatchingChar()
{
AssertParser.FailsAt(Parse.Char('a').Once(), "b", 0);
}
public void XOptionalParserFailsOnPartialMatch()
{
var optAbc = Parse.String("abc").Text().XOptional();
AssertParser.FailsAt(optAbc, "abd", 2);
AssertParser.FailsAt(optAbc, "aa", 1);
}