LibTest/collection/HasNextIterator/HasNextIterator_class_A01_t01.dart

/*
 * 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 The HasNextIterator class wraps an Iterator and provides methods
 * to iterate over an object using hasNext and next.
 * @description Checks that created object works as specified.
 * @author kaigorodov
 */
import "../../../Utils/expect.dart";
import "dart:collection";

void check (Iterable list) {
  HasNextIterator hnit = new HasNextIterator(list.iterator);
  Iterator it=list.iterator;
  for (;;) {
    bool hNext=hnit.hasNext;
    bool mNext=it.moveNext();
    Expect.equals(hNext, mNext);
    if (!mNext) {
      break;
    }
    Expect.equals(it.current, hnit.next());
  }
}
     
main() {
  check([]);
  check([1,2,3,4,0,9,-1]);
  check(new Iterable.generate(0, (int index)=>index*5));
  check(new Iterable.generate(100, (int index)=>index*5));
}