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   * 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,
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   * See the License for the specific language governing permissions and
   * limitations under the License.
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  package org.apache.beam.sdk.testing;
  
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
  import org.apache.beam.sdk.transforms.windowing.IntervalWindow;
  import org.apache.beam.sdk.transforms.windowing.PaneInfo;
  import org.apache.beam.sdk.values.ValueInSingleWindow;
  import org.joda.time.Duration;
  import org.joda.time.Instant;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link ValueInSingleWindow.Coder}. */
  @RunWith(JUnit4.class)
  public class ValueInSingleWindowCoderTest {
    @Test
    public void testDecodeEncodeEqual() throws Exception {
      Instant now = Instant.now();
      ValueInSingleWindow<String> value =
          ValueInSingleWindow.of(
              "foo",
              now,
              new IntervalWindow(now, now.plus(Duration.standardSeconds(10))),
              PaneInfo.NO_FIRING);
  
      CoderProperties.coderDecodeEncodeEqual(
          ValueInSingleWindow.Coder.of(StringUtf8Coder.of(), IntervalWindow.getCoder()), value);
    }
  
    @Test
    public void testCoderSerializable() throws Exception {
      CoderProperties.coderSerializable(
          ValueInSingleWindow.Coder.of(StringUtf8Coder.of(), IntervalWindow.getCoder()));
    }
  
    @Test
    public void testCoderIsSerializableWithWellKnownCoderType() {
      CoderProperties.coderSerializable(
          ValueInSingleWindow.Coder.of(GlobalWindow.Coder.INSTANCE, GlobalWindow.Coder.INSTANCE));
    }
  }
  