LibTest/collection/UnmodifiableListView/getRange_A01_t02.test.dart

// 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 Iterable<E> getRange(int start, int end)
/// Returns an [Iterable] that iterates over the elements in the range [start] to
/// [end] exclusive.
/// @description Checks that an empty list is returned if [end - start = 0].
/// @author iarkh@unipro.ru

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

void check(List src, int start) {
  UnmodifiableListView a = new UnmodifiableListView(src);
  var dst = a.getRange(start, start);
  Expect.equals(0, dst.length);
}

main() {
  List l = new List(1000);
  check(l, 0);
  check(l, 100);
  check(l, 999);
  check(l, 1000);

  l = [1, 2, 3];
  check(l, 0);
  check(l, 1);
  check(l, 2);
  check(l, 3);
}