| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /** |
| * @assertion Match matchAsPrefix(String string, [int start = 0]) |
| * Match this pattern against the start of string. |
| * ... |
| * @description Checks that if str is null then exception is thrown |
| * @author sgrekhov@unipro.ru |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| dynamic getNull() => null; |
| |
| main() { |
| check("AE", 0, false, true); |
| check("(a|cd)+|ef", 1, false, true); |
| check(".+: gr(a|e)y", 1, false, false); |
| check("((a)|(ab))((c)|(bc))", 0, false, false); |
| check(r"^(a+)\1*,\1+$", 1, false, false); |
| check(r"^(a+?)\1*,\1+$", 0, true, false); |
| check("(z)((a+)?(b+)?(c))*", 0, true, true); |
| } |
| |
| void check(String pattern, int start, bool multiLine, |
| bool ignoreCase) { |
| RegExp re = new RegExp(pattern, multiLine: multiLine, |
| caseSensitive: !ignoreCase); |
| Expect.throws(() { re.matchAsPrefix(getNull(), start); }); |
| } |
