| description( |
| 'Test for regression against <a href="https://bugs.webkit.org/show_bug.cgi?id=42664">Yarr Interpreter is hanging in some cases of look-ahead regex patterns</a>. It also tests some other related expressions.' |
| ); |
| |
| shouldBe('/(?:(?=x))+/.exec("x")', '[""]'); |
| shouldBe('/(?:a?)*/.exec("a")', '["a"]'); |
| shouldBe('/(a|ab)*/.exec("abab")', '["a","a"]'); |
| shouldBe('/(ab)+/.exec("abab")', '["abab","ab"]'); |
| // The following tests fail because of pcre interpreter bug(s). |
| shouldBe('/(|ab)*/.exec("ab")', '["ab","ab"]'); |
| shouldBe('/(?:(|ab)*)/.exec("ab")', '["ab","ab"]'); |
| shouldBe('/(?:(|ab)+)/.exec("ab")', '["ab","ab"]'); |
| shouldBe('/(|ab)+/.exec("abab")', '["abab","ab"]'); |
