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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.util.construction;
  
  import static org.hamcrest.MatcherAssert.assertThat;
  
  import org.apache.beam.model.pipeline.v1.RunnerApi.FunctionSpec;
  import org.apache.beam.sdk.coders.BigEndianLongCoder;
  import org.apache.beam.sdk.coders.KvCoder;
  import org.apache.beam.sdk.coders.StringUtf8Coder;
  import org.apache.beam.sdk.io.range.OffsetRange;
  import org.apache.beam.sdk.runners.AppliedPTransform;
  import org.apache.beam.sdk.testing.TestPipeline;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.transforms.View.CreatePCollectionView;
  import org.apache.beam.sdk.transforms.resourcehints.ResourceHints;
  import org.apache.beam.sdk.util.SerializableUtils;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PCollectionView;
  import org.apache.beam.sdk.values.PCollectionViews;
  import org.apache.beam.sdk.values.PCollectionViews.TypeDescriptorSupplier;
  import org.apache.beam.sdk.values.PCollectionViews.ValueOrMetadata;
  import org.apache.beam.sdk.values.PCollectionViews.ValueOrMetadataCoder;
  import org.apache.beam.sdk.values.PValues;
  import org.apache.beam.sdk.values.TypeDescriptors;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.ImmutableList;
  import org.hamcrest.Matchers;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameter;
  import org.junit.runners.Parameterized.Parameters;
  
  /** Tests for {@link CreatePCollectionViewTranslation}. */
  @RunWith(Parameterized.class)
  public class CreatePCollectionViewTranslationTest {
    // Two parameters suffices because the nature of the serialization/deserialization of
    // the view is not what is being tested; it is just important that the round trip
    // is not vacuous.
    @Parameters(name = "{index}: {0} {1}")
    public static Iterable<Object[]> data() {
      PCollection<String> singletonTestPCollection = p.apply(Create.of("one"));
      PCollection<KV<Long, ValueOrMetadata<String, OffsetRange>>> listTestPCollection =
          p.apply(
              Create.of(KV.of(0L, ValueOrMetadata.<String, OffsetRange>create("one")))
                  .withCoder(
                      KvCoder.of(
                          BigEndianLongCoder.of(),
                          ValueOrMetadataCoder.create(
                              StringUtf8Coder.of(), OffsetRange.Coder.of()))));
  
      return ImmutableList.of(
          new Object[] {
            CreatePCollectionView.of(
                PCollectionViews.singletonView(
                    singletonTestPCollection,
                    (TypeDescriptorSupplier<String>) () -> TypeDescriptors.strings(),
                    singletonTestPCollection.getWindowingStrategy(),
                    false,
                    null,
                    StringUtf8Coder.of())),
            singletonTestPCollection
          },
          new Object[] {
            CreatePCollectionView.of(
                PCollectionViews.listViewWithRandomAccess(
                    listTestPCollection,
                    (TypeDescriptorSupplier<String>) () -> TypeDescriptors.strings(),
                    listTestPCollection.getWindowingStrategy())),
            listTestPCollection
          });
    }
  
    @Parameter(0)
    public CreatePCollectionView<?, ?> createViewTransform;
  
    @Parameter(1)
    public PCollection<?> testPCollection;
  
    public static TestPipeline p = TestPipeline.create().enableAbandonedNodeEnforcement(false);
  
    @Test
    public void testEncodedProto() throws Exception {
      SdkComponents components = SdkComponents.create();
      components.registerEnvironment(Environments.createDockerEnvironment("java"));
      components.registerPCollection(testPCollection);
  
      AppliedPTransform<?, ?, ?> appliedPTransform =
          AppliedPTransform.of(
              "foo",
              PValues.expandInput(testPCollection),
              PValues.expandOutput(createViewTransform.getView()),
              createViewTransform,
              ResourceHints.create(),
              p);
  
      FunctionSpec payload = PTransformTranslation.toProto(appliedPTransform, components).getSpec();
  
      // Checks that the payload is what it should be
      PCollectionView<?> deserializedView =
          (PCollectionView<?>)
              SerializableUtils.deserializeFromByteArray(
                  payload.getPayload().toByteArray(), PCollectionView.class.getSimpleName());
  
      assertThat(deserializedView, Matchers.equalTo(createViewTransform.getView()));
    }
  
    @Test
    public void testExtractionDirectFromTransform() throws Exception {
      SdkComponents components = SdkComponents.create();
      components.registerEnvironment(Environments.createDockerEnvironment("java"));
      components.registerPCollection(testPCollection);
  
      AppliedPTransform<?, ?, ?> appliedPTransform =
          AppliedPTransform.of(
              "foo",
              PValues.expandInput(testPCollection),
              PValues.expandOutput(createViewTransform.getView()),
              createViewTransform,
              ResourceHints.create(),
              p);
  
      CreatePCollectionViewTranslation.getView((AppliedPTransform) appliedPTransform);
  
      FunctionSpec payload = PTransformTranslation.toProto(appliedPTransform, components).getSpec();
  
      // Checks that the payload is what it should be
      PCollectionView<?> deserializedView =
          (PCollectionView<?>)
              SerializableUtils.deserializeFromByteArray(
                  payload.getPayload().toByteArray(), PCollectionView.class.getSimpleName());
  
      assertThat(deserializedView, Matchers.equalTo(createViewTransform.getView()));
    }
  }
  