// Copyright (c) 2011, 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.

// @dart = 2.9

/// @assertion Constructs a regular expression.
/// @description Checks that null flags arguments can be used.
/// @author rodionov

import "../../../Utils/expect.dart";

main() {
  RegExp re = new RegExp(r".", multiLine: null, caseSensitive: null);
  Expect.isNotNull(re.firstMatch("a"), "Check: a");

  re = new RegExp(r".", multiLine: null, caseSensitive: null);
  Expect.isNotNull(re.firstMatch("b\na"), "Check: b\\na");

  re = new RegExp(r".", multiLine: null, caseSensitive: null);
  Expect.isNotNull(re.firstMatch("A"), "Check:A");
}