content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.cassandra.net;
  
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Assert;
  import org.junit.Test;
  
  import static org.apache.cassandra.utils.Clock.Global.nanoTime;
  import static org.junit.Assert.assertTrue;
  
  public class AsyncOneResponseTest
  {
      @Test
      public void getThrowsExceptionAfterTimeout() throws InterruptedException
      {
          AsyncOneResponse<Object> response = new AsyncOneResponse<>();
          Thread.sleep(2000);
          Assert.assertFalse(response.await(1, TimeUnit.SECONDS));
      }
  
      @Test
      public void getThrowsExceptionAfterCorrectTimeout() throws InterruptedException
      {
          AsyncOneResponse<Object> response = new AsyncOneResponse<>();
  
          final long expectedTimeoutMillis = 1000; // Should time out after roughly this time
          final long schedulingError = 10; // Scheduling is imperfect
  
          long startTime = nanoTime();
          boolean timeout = !response.await(expectedTimeoutMillis, TimeUnit.MILLISECONDS);
          long endTime = nanoTime();
  
          assertTrue(timeout);
          assertTrue(TimeUnit.NANOSECONDS.toMillis(endTime - startTime) > (expectedTimeoutMillis - schedulingError));
      }
  }
  