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// Copyright 2013 the V8 project authors. All rights reserved.
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// @dart = 2.9

import 'v8_regexp_utils.dart';
import 'package:expect/expect.dart';

void main() {
  description("This page tests assertions followed by quantifiers.");

  var regexp;

  regexp = new RegExp(r"(?=a){0}", multiLine: true);
  shouldBeTrue(regexp.hasMatch('a'));

  regexp = new RegExp(r"(?=a){1}", multiLine: true);
  shouldBeTrue(regexp.hasMatch('a'));

  regexp = new RegExp(r"(?!a){0}", multiLine: true);
  shouldBeTrue(regexp.hasMatch('b'));

  regexp = new RegExp(r"(?!a){1}", multiLine: true);
  shouldBeTrue(regexp.hasMatch('b'));

  shouldBeTrue(new RegExp(r"^(?=a)?b$").hasMatch("b"));
}