tests/corelib_strong/regexp/indexof_test.dart

// Copyright (c) 2014, the Dart project authors. All rights reserved.
// Copyright 2008 the V8 project authors. All rights reserved.
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import 'v8_regexp_utils.dart';
import 'package:expect/expect.dart';

void main() {
  dynamic CheckMatch(re, str, matches) {
    assertEquals(matches.length > 0, re.hasMatch(str));
    var result = re.allMatches(str).toList();
    if (matches.length > 0) {
      assertEquals(matches.length, result.length);
      var lastExpected;
      var lastFrom;
      var lastLength;
      for (var idx = 0; idx < matches.length; idx++) {
        var from = matches[idx][0];
        var length = matches[idx][1];
        var expected = str.substring(from, from + length);
        var name = "$str[$from..${from+length}]";
        assertEquals(expected, result[idx].group(0), name);
      }
    } else {
      assertTrue(result.isEmpty);
    }
  }

  CheckMatch(new RegExp(r"abc"), "xxxabcxxxabcxxx", [[3, 3], [9, 3]]);
  CheckMatch(new RegExp(r"abc"), "abcabcabc", [[0, 3], [3, 3], [6, 3]]);
  CheckMatch(new RegExp(r"aba"), "ababababa", [[0, 3], [4, 3]]);
  CheckMatch(new RegExp(r"foo"), "ofooofoooofofooofo", [[1, 3], [5, 3], [12, 3]]);
  CheckMatch(new RegExp(r"foobarbaz"), "xx", []);
  CheckMatch(new RegExp(r"abc"), "abababa", []);

  assertEquals("xxxdefxxxdefxxx", "xxxabcxxxabcxxx".replaceAll(new RegExp(r"abc"), "def"));
  assertEquals("o-o-oofo-ofo", "ofooofoooofofooofo".replaceAll(new RegExp(r"foo"), "-"));
  assertEquals("deded", "deded".replaceAll(new RegExp(r"x"), "-"));
  assertEquals("-a-b-c-d-e-f-", "abcdef".replaceAll(new RegExp(""), "-"));

  CheckMatch(new RegExp(r"a(.)"), "xyzzyabxyzzyacxyzzy", [[5, 2], [12, 2]]);

  CheckMatch(new RegExp(r"a|(?:)"), "aba", [[0, 1], [1, 0], [2, 1], [3, 0]]);
  CheckMatch(new RegExp(r"a|(?:)"), "baba", [[0, 0], [1, 1], [2, 0], [3, 1], [4, 0]]);
  CheckMatch(new RegExp(r"a|(?:)"), "bab", [[0, 0], [1, 1], [2, 0], [3, 0]]);
}