/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import assert = require('assert');

class Animal {
  private name: string;

  constructor(theName: string) {
    this.name = theName;
  }
}

class Rhino extends Animal {
  constructor() {
    super('Rhino');
  }
}

let animal = new Animal('Rhino');

let rhino = new Rhino();

animal = rhino;

assert(animal === rhino, 'success');