LibTest/collection/HasNextIterator/hasNext_A01_t02.dart

// Copyright (c) 2016, 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 bool hasNext
/// @description Checks that [hasNext] returns [false] if iterator has no
/// elements to iterate
/// @author sgrekhov@unipro.ru

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

main() {
  HasNextIterator i1 = new HasNextIterator([].iterator);
  Expect.isFalse(i1.hasNext);

  HasNextIterator i2 = new HasNextIterator([0].iterator);
  i2.next();
  Expect.isFalse(i2.hasNext);

  HasNextIterator i3 = new HasNextIterator([0, 1].iterator);
  i3.next();
  i3.next();
  Expect.isFalse(i3.hasNext);
}