public void Match_In_Different_Cultures_CriticalCases(string pattern, RegexOptions options, CultureInfo culture, string input, string match_expected)
{
Regex r = RegexHelpers.CreateRegexInCulture(pattern, options, culture);
Match match = r.Match(input);
Assert.Equal(match_expected, match.Value);
}
public void TurkishI_Is_Differently_LowerUpperCased_In_Turkish_Culture_NonBacktracking()
{
var turkish = new CultureInfo("tr-TR");
string input = "I\u0131\u0130i";
// Use the input as the regex also
// Ignore the Compiled option here because it is a noop in combination with NonBacktracking
Regex cultInvariantRegex = RegexHelpers.CreateRegexInCulture(input, RegexHelpers.RegexOptionNonBacktracking | RegexOptions.IgnoreCase | RegexOptions.CultureInvariant, CultureInfo.InvariantCulture);
Regex turkishRegex = RegexHelpers.CreateRegexInCulture(input, RegexHelpers.RegexOptionNonBacktracking | RegexOptions.IgnoreCase, turkish);
Assert.True(cultInvariantRegex.IsMatch(input));
Assert.True(turkishRegex.IsMatch(input)); // <---------- This result differs from the result in the previous test!!!
// As above and no surprises here
// The regexes recognize different lowercase variants of different versions of i differently
Assert.True(cultInvariantRegex.IsMatch(input.ToLowerInvariant()));
Assert.False(cultInvariantRegex.IsMatch(input.ToLower(turkish)));
Assert.False(turkishRegex.IsMatch(input.ToLowerInvariant()));
Assert.True(turkishRegex.IsMatch(input.ToLower(turkish)));
// The same holds symmetrically for ToUpper
Assert.True(cultInvariantRegex.IsMatch(input.ToUpperInvariant()));
Assert.False(cultInvariantRegex.IsMatch(input.ToUpper(turkish)));
Assert.False(turkishRegex.IsMatch(input.ToUpperInvariant()));
Assert.True(turkishRegex.IsMatch(input.ToUpper(turkish)));
}
public void TurkishCulture_Handling_Of_IgnoreCase_NonBacktracking()
{
var turkish = new CultureInfo("tr-TR");
string input = "I\u0131\u0130i";
string pattern = "[H-J][\u0131-\u0140][\u0120-\u0130][h-j]";
Regex regex = RegexHelpers.CreateRegexInCulture(pattern, RegexOptions.IgnoreCase | RegexHelpers.RegexOptionNonBacktracking, turkish);
// The pattern must trivially match the input because all of the letters fall in the given intervals
// Ignoring case can only add more letters here -- not REMOVE letters
Assert.True(regex.IsMatch(input));
}
