| // Copyright (c) 2017, 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 String replaceFirstMapped(Pattern from, |
| * String replace(Match match), [int startIndex = 0]) |
| * Replace the first occurence of from in this string. |
| * |
| * Returns a new string, which is this string except that the first match of |
| * pattern, starting from startIndex, is replaced by the result of calling |
| * replace with the match object. |
| * @description Checks that this method replaces the first matched substring |
| * only, starting from start |
| * @author sgrekhov@unipro.ru |
| */ |
| import "../../../Utils/expect.dart"; |
| |
| main() { |
| Expect.equals("1230", "1231".replaceFirstMapped("1", (m) => "0", 1)); |
| Expect.equals("12310", "123112".replaceFirstMapped("12", (m) => "0", 1)); |
| Expect.equals("12301", "123231".replaceFirstMapped("23", (m) => "0", 3)); |
| Expect.equals("12\w310", "12\w31\w".replaceFirstMapped("\w", (m) => "0", 3)); |
| Expect.equals("12\\w031", r"12\w\w31".replaceFirstMapped(r"\w", (m) => "0", 3)); |
| Expect.equals("[:alpha:]01231", "[:alpha:][:alpha:]1231".replaceFirstMapped( |
| "[:alpha:]", (m) => "0", 2)); |
| } |