blob: 1bc80d9c7f6618999be6325afab3ea30f9dd3207 [file] [log] [blame]
// 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 string, int index)
/// A moveNext will use the rune starting at [index] the current value, and a
/// movePrevious
/// will use the rune ending just before [index] as the current value.
/// @description Checks that moveNext and movePrevious set [current] correctly.
/// @author msyabro
import "../../../Utils/expect.dart";
check(string, pos, current, prev) {
var it = new, pos);
Expect.equals(current, it.current);
it = new, pos);
Expect.equals(prev, it.current);
main() {
check('', 0, -1, -1);
check('a', 1, -1, 0x61);
check('\u{10000}', 0, 0x10000, -1);
check('\u{10000}\u{10001}\x01', 2, 0x10001, 0x10000);
check('\u{10000}\u{10001}\x01', 4, 0x01, 0x10001);
check('string', 2, 0x72, 0x74);
check('string', 3, 0x69, 0x72);