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.runners.dataflow.worker.util.common.worker;
  
  import static org.apache.beam.runners.dataflow.worker.NameContextsForTests.nameContextForTest;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import org.apache.beam.runners.dataflow.worker.counters.CounterFactory.CounterMean;
  import org.apache.beam.runners.dataflow.worker.counters.CounterSet;
  import org.apache.beam.runners.dataflow.worker.util.common.worker.TestOutputReceiver.TestOutputCounter;
  import org.hamcrest.CoreMatchers;
  import org.junit.Assert;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for OutputReceiver. */
  @RunWith(JUnit4.class)
  public class OutputReceiverTest {
  
    private final CounterSet counterSet = new CounterSet();
  
    @Test
    public void testEmptyOutputReceiver() throws Exception {
      OutputReceiver fanOut = new OutputReceiver();
      TestOutputCounter outputCounter = new TestOutputCounter(nameContextForTest());
      fanOut.addOutputCounter(outputCounter);
      fanOut.process("hi");
      fanOut.process("bob");
  
      CounterMean<Long> meanByteCount = outputCounter.getMeanByteCount().getAggregate();
      Assert.assertEquals(7, (long) meanByteCount.getAggregate());
      Assert.assertEquals(2, meanByteCount.getCount());
    }
  
    @Test
    public void testMultipleOutputReceiver() throws Exception {
      OutputReceiver fanOut = new OutputReceiver();
      TestOutputCounter outputCounter = new TestOutputCounter(nameContextForTest());
      fanOut.addOutputCounter(outputCounter);
  
      TestOutputReceiver receiver1 = new TestOutputReceiver(counterSet, nameContextForTest());
      fanOut.addOutput(receiver1);
  
      TestOutputReceiver receiver2 = new TestOutputReceiver(counterSet, nameContextForTest());
      fanOut.addOutput(receiver2);
  
      fanOut.process("hi");
      fanOut.process("bob");
  
      CounterMean<Long> meanByteCount = outputCounter.getMeanByteCount().getAggregate();
      Assert.assertEquals(7, meanByteCount.getAggregate().longValue());
      Assert.assertEquals(2, meanByteCount.getCount());
      assertThat(receiver1.outputElems, CoreMatchers.<Object>hasItems("hi", "bob"));
      assertThat(receiver2.outputElems, CoreMatchers.<Object>hasItems("hi", "bob"));
    }
  }
  