common/util/src/test/java/org/opendaylight/yangtools/util/concurrent/CountingRejectedExecutionHandlerTest.java

   1 /*
   2  * Copyright (c) 2014 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.util.concurrent;
   9
  10 import static org.junit.jupiter.api.Assertions.assertEquals;
  11 import static org.junit.jupiter.api.Assertions.assertThrows;
  12 import static org.junit.jupiter.api.Assertions.assertTrue;
  13
  14 import java.util.concurrent.CountDownLatch;
  15 import java.util.concurrent.LinkedBlockingQueue;
  16 import java.util.concurrent.RejectedExecutionException;
  17 import java.util.concurrent.ThreadPoolExecutor;
  18 import java.util.concurrent.TimeUnit;
  19 import org.junit.jupiter.api.AfterEach;
  20 import org.junit.jupiter.api.Test;
  21 import org.opendaylight.yangtools.util.ExecutorServiceUtil;
  22 import org.opendaylight.yangtools.util.concurrent.ThreadPoolExecutorTest.Task;
  23
  24 /**
  25  * Unit tests for CountingRejectedExecutionHandler.
  26  *
  27  * @author Thomas Pantelis
  28  */
  29 class CountingRejectedExecutionHandlerTest {
  30
  31     private ThreadPoolExecutor executor;
  32
  33     @AfterEach
  34     void tearDown() {
  35         if (executor != null) {
  36             executor.shutdownNow();
  37         }
  38     }
  39
  40     @Test
  41     void testCallerRunsPolicyHandler() throws InterruptedException {
  42
  43         final var tasksRunLatch = new CountDownLatch(1);
  44         final var blockLatch = new CountDownLatch(1);
  45
  46         executor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
  47                 ExecutorServiceUtil.offerFailingBlockingQueue(new LinkedBlockingQueue<>()));
  48
  49         final var countingHandler = CountingRejectedExecutionHandler.newCallerRunsPolicy();
  50         executor.setRejectedExecutionHandler(countingHandler);
  51
  52         executor.execute(new Task(tasksRunLatch, blockLatch));
  53
  54         final var tasks = 5;
  55         for (int i = 0; i < tasks - 1; i++) {
  56             executor.execute(new Task(null, null, null, null, 0));
  57         }
  58
  59         assertEquals(tasks - 1, countingHandler.getRejectedTaskCount(), "getRejectedTaskCount");
  60
  61         blockLatch.countDown();
  62
  63         assertTrue(tasksRunLatch.await(5, TimeUnit.SECONDS), "Tasks complete");
  64     }
  65
  66     @Test
  67     void testAbortPolicyHandler() throws InterruptedException {
  68
  69         final var tasksRunLatch = new CountDownLatch(1);
  70         final var blockLatch = new CountDownLatch(1);
  71
  72         executor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
  73                 ExecutorServiceUtil.offerFailingBlockingQueue(new LinkedBlockingQueue<>()));
  74
  75         final var countingHandler = CountingRejectedExecutionHandler.newAbortPolicy();
  76         executor.setRejectedExecutionHandler(countingHandler);
  77
  78         executor.execute(new Task(tasksRunLatch, blockLatch));
  79
  80         final var tasks = 5;
  81         for (int i = 0; i < tasks - 1; i++) {
  82             assertThrows(RejectedExecutionException.class, () -> executor.execute(new Task(null, null, null, null, 0)));
  83         }
  84
  85         assertEquals(tasks - 1, countingHandler.getRejectedTaskCount(), "getRejectedTaskCount");
  86
  87         blockLatch.countDown();
  88
  89         assertTrue(tasksRunLatch.await(5, TimeUnit.SECONDS), "Tasks complete");
  90     }
  91 }