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
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  package org.apache.beam.runners.spark.structuredstreaming.translation.batch;
  
  import java.io.Serializable;
  import org.apache.beam.runners.spark.structuredstreaming.SparkSessionRule;
  import org.apache.beam.sdk.coders.IterableCoder;
  import org.apache.beam.sdk.coders.KvCoder;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.coders.VarIntCoder;
  import org.apache.beam.sdk.testing.PAssert;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.transforms.Combine;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.transforms.Sum;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.junit.ClassRule;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Test class for beam to spark {@link Combine#groupedValues} translation. */
  @RunWith(JUnit4.class)
  public class CombineGroupedValuesTest implements Serializable {
    @ClassRule public static final SparkSessionRule SESSION = new SparkSessionRule();
  
    @Rule
    public transient TestPipeline pipeline =
        TestPipeline.fromOptions(SESSION.createPipelineOptions());
  
    @Test
    public void testCombineGroupedValues() {
      PCollection<KV<String, Integer>> input =
          pipeline
              .apply(
                  Create.<KV<String, Iterable<Integer>>>of(
                          KV.of("a", ImmutableList.of(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)),
                          KV.of("b", ImmutableList.of()))
                      .withCoder(
                          KvCoder.of(StringUtf8Coder.of(), IterableCoder.of(VarIntCoder.of()))))
              .apply(Combine.groupedValues(Sum.ofIntegers()));
  
      PAssert.that(input).containsInAnyOrder(KV.of("a", 55), KV.of("b", 0));
      pipeline.run();
    }
  }
  