content: /*
   * Copyright (c) 2013 - 2014, Allen A. George <allen dot george at gmail dot com>
   *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in the
   *       documentation and/or other materials provided with the distribution.
   *     * Neither the name of libraft nor the
   *       names of its contributors may be used to endorse or promote products
   *       derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package io.libraft.agent;
  
  import io.libraft.algorithm.Timer;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.concurrent.atomic.AtomicLong;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotEquals;
  import static org.junit.Assert.assertTrue;
  
  public final class WrappedTimerTest {
  
      private static final Logger LOGGER = LoggerFactory.getLogger(WrappedTimerTest.class);
  
      private WrappedTimer timer;
  
      @Rule
      public final TestLoggingRule testLoggingRule = new TestLoggingRule(LOGGER);
  
      @Before
      public void setup() {
          timer = new WrappedTimer();
      }
  
      @After
      public void teardown() {
          timer.stop();
      }
  
      @Test(expected = IllegalStateException.class)
      public void shouldFailToCreateTimeoutIfTimerNotRunning() throws Exception {
          timer.newTimeout(new Timer.TimeoutTask() {
              @Override
              public void run(Timer.TimeoutHandle timeoutHandle) {
                  // empty
              }
          }, 5, TimeUnit.SECONDS);
      }
  
      @Test
      public void shouldTriggerTimeout() throws Exception {
          timer.start();
  
          long startTime = System.currentTimeMillis();
          final AtomicLong stopTime = new AtomicLong(-1);
          timer.newTimeout(new Timer.TimeoutTask() {
              @Override
              public void run(Timer.TimeoutHandle timeoutHandle) {
                  stopTime.set(System.currentTimeMillis());
              }
          }, 10, TimeUnit.MILLISECONDS);
  
          // sleep for longer than the timer interval, just to give it more than enough time to fire
  
          Thread.sleep(20);
  
          assertNotEquals(stopTime.get(), -1);
          assertTrue(stopTime.get() - startTime >= 10);
      }
  
      @Test
      public void shouldCancelPendingTasksWhenStopped() throws Exception {
          timer.start();
  
          final AtomicBoolean ran = new AtomicBoolean(false);
          timer.newTimeout(new Timer.TimeoutTask() {
              @Override
              public void run(Timer.TimeoutHandle timeoutHandle) {
                  ran.set(true);
              }
          }, 20, TimeUnit.MILLISECONDS);
  
          // sleep for less time than the timeout specifies and then stop the timer
  
          Thread.sleep(5);
  
          timer.stop();
  
          // sleep again, and see if the task still triggers
  
          Thread.sleep(20);
  
          assertFalse(ran.get());
      }
  }
  