java-design-patterns/guarded-suspension/src/test/java/com/iluwatar/guarded/suspension/GuardedQueueTest.java

/*
 * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
 *
 * The MIT License
 * Copyright © 2014-2022 Ilkka Seppälä
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.iluwatar.guarded.suspension;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.junit.jupiter.api.Test;

/**
 * Test for Guarded Queue
 */
class GuardedQueueTest {
  private volatile Integer value;

  @Test
  void testGet() {
    var g = new GuardedQueue();
    var executorService = Executors.newFixedThreadPool(2);
    executorService.submit(() -> value = g.get());
    executorService.submit(() -> g.put(10));
    executorService.shutdown();
    try {
      executorService.awaitTermination(30, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
      e.printStackTrace();
    }
    assertEquals(Integer.valueOf(10), value);
  }

  @Test
  void testPut() {
    var g = new GuardedQueue();
    g.put(12);
    assertEquals(Integer.valueOf(12), g.get());
  }

}