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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,
   * 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.
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  package org.apache.beam.sdk.transforms.join;
  
  import static org.junit.Assert.assertFalse;
  
  import org.apache.beam.sdk.coders.BigEndianIntegerCoder;
  import org.apache.beam.sdk.coders.DoubleCoder;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.coders.VarIntCoder;
  import org.apache.beam.sdk.testing.CoderProperties;
  import org.apache.beam.sdk.transforms.join.CoGbkResult.CoGbkResultCoder;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
  import org.apache.beam.sdk.values.TupleTag;
  import org.apache.beam.sdk.values.TupleTagList;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests the CoGbkResult.CoGbkResultCoder. */
  @RunWith(JUnit4.class)
  public class CoGbkResultCoderTest {
  
    private static final CoGbkResultSchema TEST_SCHEMA =
        new CoGbkResultSchema(TupleTagList.of(new TupleTag<String>()).and(new TupleTag<Integer>()));
  
    private static final UnionCoder TEST_UNION_CODER =
        UnionCoder.of(ImmutableList.of(StringUtf8Coder.of(), VarIntCoder.of()));
  
    private static final UnionCoder COMPATIBLE_UNION_CODER =
        UnionCoder.of(ImmutableList.of(StringUtf8Coder.of(), BigEndianIntegerCoder.of()));
  
    private static final CoGbkResultSchema INCOMPATIBLE_SCHEMA =
        new CoGbkResultSchema(TupleTagList.of(new TupleTag<String>()).and(new TupleTag<Double>()));
  
    private static final UnionCoder INCOMPATIBLE_UNION_CODER =
        UnionCoder.of(ImmutableList.of(StringUtf8Coder.of(), DoubleCoder.of()));
  
    private static final CoGbkResultCoder TEST_CODER =
        CoGbkResultCoder.of(TEST_SCHEMA, TEST_UNION_CODER);
  
    private static final CoGbkResultCoder COMPATIBLE_TEST_CODER =
        CoGbkResultCoder.of(TEST_SCHEMA, COMPATIBLE_UNION_CODER);
  
    private static final CoGbkResultCoder INCOMPATIBLE_TEST_CODER =
        CoGbkResultCoder.of(INCOMPATIBLE_SCHEMA, INCOMPATIBLE_UNION_CODER);
  
    @Test
    public void testEquals() {
      assertFalse(TEST_CODER.equals(new Object()));
      assertFalse(TEST_CODER.equals(COMPATIBLE_TEST_CODER));
      assertFalse(TEST_CODER.equals(INCOMPATIBLE_TEST_CODER));
    }
  
    @Test
    public void testCoderIsSerialiable() {
      CoderProperties.coderSerializable(TEST_CODER);
    }
  
    @Test
    public void testCoderIsSerializableWithWellKnownCoderType() {
      CoderProperties.coderSerializable(
          CoGbkResultCoder.of(
              CoGbkResultSchema.of(ImmutableList.of(new TupleTag<GlobalWindow>())),
              UnionCoder.of(ImmutableList.of(GlobalWindow.Coder.INSTANCE))));
    }
  }
  