LibTest/core/RuneIterator/RuneIterator_A01_t01.dart

// Copyright (c) 2013, 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 RuneIterator(String string)
/// Create an iterator positioned at the beginning of the string.
/// @description Checks that [RuneIterator] is created with correct
/// position.
/// @author msyabro

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

check(string, firstCodePoint) {
  var it = new RuneIterator(string);
  Expect.isTrue(it is RuneIterator);
  Expect.runtimeIsType<RuneIterator>(it);
  it.moveNext();
  Expect.equals(firstCodePoint, it.current);
}

main() {
  check('', -1);
  check('a', 0x61);
  check('\u{10000}', 0x10000);
  check('\u{10000}\u{10001}\x01', 0x10000);
  check('string', 0x73);
}