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// 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.throwsStateError(() => it.next());
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.throwsStateError(() => it.next());
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.throwsStateError(() => it.next());
Expect.isFalse(it.hasNext);
}