LibTest/collection/UnmodifiableListView/lastIndexOf_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  int lastIndexOf(Object element, [ int startIndex ])
/// Returns the last index in the list a of the given [element], starting the
/// search at index [startIndex] to 0.
/// @description Checks that correct index is returned if the element presents in
/// the list
/// @author iarkh@unipro.ru

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

main() {
  UnmodifiableListView a = new UnmodifiableListView(
      [42, 0, -1, 42, -1, 6031769, 0]);
    
  Expect.equals(3, a.lastIndexOf(42, 6));
  Expect.equals(3, a.lastIndexOf(42, 3));
  Expect.equals(0, a.lastIndexOf(42, 2));

  Expect.equals(6, a.lastIndexOf(0, 6));
  Expect.equals(1, a.lastIndexOf(0, 5));

  Expect.equals(2, a.lastIndexOf(-1, 3));
  Expect.equals(4, a.lastIndexOf(-1, 5));

  Expect.equals(5, a.lastIndexOf(6031769, 5));
  Expect.equals(5, a.lastIndexOf(6031769, 6));
}