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.beam.sdk.fn.stream;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.collection.IsEmptyCollection.empty;
  import static org.junit.Assert.assertFalse;
  
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.TimeUnit;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link AdvancingPhaser}. */
  @RunWith(JUnit4.class)
  public class AdvancingPhaserTest {
    @Test
    public void testAdvancement() throws Exception {
      final AdvancingPhaser phaser = new AdvancingPhaser(1);
      int currentPhase = phaser.getPhase();
      ExecutorService service = Executors.newSingleThreadExecutor();
      service.submit((Runnable) phaser::arrive).get();
      phaser.awaitAdvance(currentPhase);
      assertFalse(phaser.isTerminated());
      service.shutdown();
      if (!service.awaitTermination(10, TimeUnit.SECONDS)) {
        assertThat(service.shutdownNow(), empty());
      }
    }
  }
  