| // Copyright (c) 2012, 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. |
| |
| library hasNextIterator.test; |
| import "package:expect/expect.dart"; |
| import 'dart:collection'; |
| |
| main() { |
| var it = new HasNextIterator([].iterator); |
| Expect.isFalse(it.hasNext); |
| Expect.isFalse(it.hasNext); |
| Expect.throws(() => it.next(), (e) => e is StateError); |
| Expect.isFalse(it.hasNext); |
| |
| it = new HasNextIterator([1].iterator); |
| Expect.isTrue(it.hasNext); |
| Expect.isTrue(it.hasNext); |
| Expect.equals(1, it.next()); |
| Expect.isFalse(it.hasNext); |
| Expect.isFalse(it.hasNext); |
| Expect.throws(() => it.next(), (e) => e is StateError); |
| Expect.isFalse(it.hasNext); |
| |
| it = new HasNextIterator([1, 2].iterator); |
| Expect.isTrue(it.hasNext); |
| Expect.isTrue(it.hasNext); |
| Expect.equals(1, it.next()); |
| Expect.isTrue(it.hasNext); |
| Expect.isTrue(it.hasNext); |
| Expect.equals(2, it.next()); |
| Expect.isFalse(it.hasNext); |
| Expect.isFalse(it.hasNext); |
| Expect.throws(() => it.next(), (e) => e is StateError); |
| Expect.isFalse(it.hasNext); |
| } |