LibTest/core/RuneIterator/reset_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 void reset([int rawIndex = 0])
 * Resets the iterator to the given index into the string.
 * After this the current value is unset. You must call moveNext
 * make the rune at the position current, or movePrevious
 * for the last rune before the position.
 * @description Checks that [current] equals -1 after the reset.
 * @author msyabro
 */
import "../../../Utils/expect.dart";

check(string, pos) {
  var it = new RuneIterator(string);
  it.moveNext();
  it.reset(pos);
  Expect.equals(-1, it.current);
}

main() {
  check('', 0);
  check('a', 1);
  check('\u{10000}\u{10001}\x01', 2);
  check('\u{10000}\u{10001}\x01', 4);
}