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;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.hamcrest.Matchers.equalTo;
  import static org.hamcrest.Matchers.instanceOf;
  
  import java.util.Collections;
  import java.util.List;
  import org.apache.beam.runners.dataflow.util.CloudObject;
  import org.apache.beam.runners.dataflow.util.CloudObjects;
  import org.apache.beam.runners.dataflow.util.PropertyNames;
  import org.apache.beam.runners.dataflow.util.Structs;
  import org.apache.beam.runners.dataflow.worker.util.TimerOrElement.TimerOrElementCoder;
  import org.apache.beam.sdk.coders.ByteArrayCoder;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.sdk.coders.KvCoder;
  import org.apache.beam.sdk.coders.VarLongCoder;
  import org.apache.beam.sdk.testing.CoderProperties;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link TimerOrElement}. */
  @RunWith(JUnit4.class)
  public class TimerOrElementTest {
    @Test
    public void testCoderIsSerializableWithWellKnownCoderType() {
      CoderProperties.coderSerializable(
          TimerOrElementCoder.of(
              KvCoder.of(GlobalWindow.Coder.INSTANCE, GlobalWindow.Coder.INSTANCE)));
    }
  
    @Test
    public void testCoderCanBeDecodedFromCloudObject() {
      CloudObject cloudObject =
          CloudObject.forClassName(
              "com.google.cloud.dataflow.sdk.util.TimerOrElement$TimerOrElementCoder");
      List<CloudObject> component =
          Collections.singletonList(
              CloudObjects.asCloudObject(
                  KvCoder.of(VarLongCoder.of(), ByteArrayCoder.of()), /*sdkComponents=*/ null));
      Structs.addList(cloudObject, PropertyNames.COMPONENT_ENCODINGS, component);
  
      Coder<?> decoded = CloudObjects.coderFromCloudObject(cloudObject);
      assertThat(decoded, instanceOf(TimerOrElementCoder.class));
      TimerOrElementCoder<?> decodedCoder = (TimerOrElementCoder<?>) decoded;
      assertThat(decodedCoder.getKeyCoder(), equalTo(VarLongCoder.of()));
      assertThat(decodedCoder.getElementCoder(), equalTo(ByteArrayCoder.of()));
    }
  }
  