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.sdk.util.construction;
  
  import static org.junit.Assert.assertEquals;
  
  import org.apache.beam.sdk.transforms.Materialization;
  import org.apache.beam.sdk.transforms.ViewFn;
  import org.apache.beam.sdk.transforms.windowing.GlobalWindows;
  import org.apache.beam.sdk.values.TypeDescriptor;
  import org.checkerframework.checker.nullness.qual.Nullable;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.JUnit4;
  
  /** Tests for {@link PCollectionViewTranslation}. */
  @RunWith(JUnit4.class)
  public class PCollectionViewTranslationTest {
    @Test
    public void testViewFnTranslation() throws Exception {
      SdkComponents sdkComponents = SdkComponents.create();
      sdkComponents.registerEnvironment(Environments.createDockerEnvironment("java"));
      assertEquals(
          new TestViewFn(),
          PCollectionViewTranslation.viewFnFromProto(
              ParDoTranslation.translateViewFn(new TestViewFn(), sdkComponents)));
    }
  
    @Test
    public void testWindowMappingFnTranslation() throws Exception {
      SdkComponents sdkComponents = SdkComponents.create();
      sdkComponents.registerEnvironment(Environments.createDockerEnvironment("java"));
      assertEquals(
          new GlobalWindows().getDefaultWindowMappingFn(),
          PCollectionViewTranslation.windowMappingFnFromProto(
              ParDoTranslation.translateWindowMappingFn(
                  new GlobalWindows().getDefaultWindowMappingFn(), sdkComponents)));
    }
  
    /** Test implementation to check for equality. */
    private static class TestViewFn extends ViewFn<Object, Object> {
      @Override
      public Materialization<Object> getMaterialization() {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public Object apply(Object o) {
        throw new UnsupportedOperationException();
      }
  
      @Override
      public TypeDescriptor<Object> getTypeDescriptor() {
        return new TypeDescriptor<Object>() {};
      }
  
      @Override
      public boolean equals(@Nullable Object obj) {
        return obj instanceof TestViewFn;
      }
  
      @Override
      public int hashCode() {
        return 0;
      }
    }
  }
  