LibTest/core/Iterator/moveNext_A01_t01.test.dart

// Copyright (c) 2011, 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.

// @dart = 2.9

/// @assertion abstract bool moveNext()
/// Returns whether the [Iterator] has elements left.
/// @description Checks that true is returned only if the [Iterator] has elements
/// left.
/// @author kaigorodov

library moveNext_A01_t01;
 
import "../../../Utils/expect.dart";

test(Iterator create([Iterable content]), {bool isSet: false}) {

  void check(Iterator it, bool expected) {
    Expect.equals(expected, it.moveNext());
  }

  check(create([]), false);

  List a = new List();
  check(create(a), false);
  a.add(0);
  check(create(a), true);

  a = new List();
  a.length = 2547;
  check(create(a), true);

  a.clear();
  check(create(a), false);

  a.length = 1;
  check(create(a), true);

  check(create(const[]), false);

  check(create(const[1]), true);
}