content: /**
   * 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.
   */
  package org.apache.aurora.scheduler.base;
  
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.LinkedBlockingQueue;
  import java.util.concurrent.ScheduledThreadPoolExecutor;
  import java.util.concurrent.ThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.aurora.common.testing.easymock.EasyMockTest;
  import org.easymock.EasyMock;
  import org.junit.Before;
  import org.junit.Test;
  import org.slf4j.Logger;
  
  import static org.easymock.EasyMock.contains;
  import static org.easymock.EasyMock.expectLastCall;
  
  public class AsyncUtilTest extends EasyMockTest {
    private static final String NAME_FORMAT = "Test-%d";
    private Logger logger;
    private CountDownLatch latch;
  
    @Before
    public void setUp() {
      logger = createMock(Logger.class);
      latch = new CountDownLatch(1);
    }
  
    @Test
    public void testScheduleLogging() throws Exception {
      expectLogging();
  
      control.replay();
  
      scheduledExecutor().schedule(() -> {
        throw new IllegalArgumentException("Expected exception.");
      }, 0, TimeUnit.MILLISECONDS);
  
      latch.await();
    }
  
    @Test
    public void testSubmitLogging() throws Exception {
      expectLogging();
  
      control.replay();
  
      scheduledExecutor().submit(new Runnable() {
        @Override
        public void run() {
          throw new IllegalArgumentException("Expected exception.");
        }
      });
  
      latch.await();
    }
  
    @Test
    public void testExecuteLogging() throws Exception {
      expectLogging();
  
      control.replay();
  
      ThreadPoolExecutor executor =
          AsyncUtil.loggingExecutor(1, 1, new LinkedBlockingQueue<>(), NAME_FORMAT, logger);
      executor.execute(() -> {
        throw new IllegalArgumentException("Expected exception.");
      });
  
      latch.await();
    }
  
    private void expectLogging() {
      logger.error(contains("Expected exception."), EasyMock.<ExecutionException>anyObject());
  
      expectLastCall().andAnswer(() -> {
        latch.countDown();
        return null;
      }).once();
    }
  
    private ScheduledThreadPoolExecutor scheduledExecutor() {
      return AsyncUtil.singleThreadLoggingScheduledExecutor(NAME_FORMAT, logger);
    }
  }
  