LibTest/math/Rectangle/hashCode_A01_t02.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 hashCode
/// The hash code for this object.
/// A hash code is a single integer which represents the state of the object that
/// affects == comparisons.
/// All objects have hash codes. The default hash code represents only the
/// identity of the object, the same way as the default == implementation only
/// considers objects equal if they are identical (see identityHashCode).
/// @description Checks that [hashCode] is read-only and can't be set.
/// @author ngl@unipro.ru


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


main() {
  dynamic r = new Rectangle(1, 2, 3, 4);
  try {
    r.hashCode = 1;
    Expect.fail("[hashCode] should be read-only");
  } on NoSuchMethodError {}
}