// Copyright (c) 2017, 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 E reduce(E combine(E value, E element))
/// ...
/// If it has only one element, that element is returned.
/// @description Checks that the first element is returned, if iterable has only
/// one element.
/// @author ngl@unipro.ru


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

check(List<int> list) {
  var l = new Int32List.fromList(list);
  var res = l.reduce((prev, cur) => prev + cur);
  Expect.equals(l[0], res);
}

checkConst(List<int> list) {
  var l = new Int32List.fromList(list);
  var res = l.reduce((prev, cur) => 1);
  Expect.equals(l[0], res);
}

main() {
  check([1]);
  check([10]);

  checkConst([2]);
}