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.extensions.euphoria.core.translate.provider;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Optional;
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.base.Operator;
  import org.apache.beam.sdk.extensions.euphoria.core.translate.OperatorTranslator;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PCollectionList;
  import org.apache.beam.sdk.values.TypeDescriptors;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  @SuppressWarnings({
    "rawtypes" // TODO(https://github.com/apache/beam/issues/20447)
  })
  class ProviderTestUtils {
  
    interface Named {
      String getName();
    }
  
    /** Dummy {@link OperatorTranslator} used for testing purposes. */
    static class TestOpTranslator implements OperatorTranslator<Void, Void, TestOperator>, Named {
      private final String name;
      private final boolean canTranslate;
  
      TestOpTranslator(String name, boolean canTranslate) {
        this.name = name;
        this.canTranslate = canTranslate;
      }
  
      static TestOpTranslator ofName(String name) {
        return new TestOpTranslator(name, true);
      }
  
      static TestOpTranslator of(String name, boolean canTranslate) {
        return new TestOpTranslator(name, canTranslate);
      }
  
      @Override
      public PCollection<Void> translate(TestOperator operator, PCollectionList<Void> inputs) {
        throw new IllegalStateException("Not meant to actually translate something.");
      }
  
      @Override
      public boolean canTranslate(TestOperator operator) {
        return canTranslate;
      }
  
      @Override
      public String getName() {
        return name;
      }
    }
  
    /** Dummy {@link OperatorTranslator} used for testing purposes. */
    static class AnyOpTranslator implements OperatorTranslator<Void, Void, Operator>, Named {
      private final String name;
      private final boolean canTranslate;
  
      AnyOpTranslator(String name, boolean canTranslate) {
        this.name = name;
        this.canTranslate = canTranslate;
      }
  
      static AnyOpTranslator ofName(String name) {
        return new AnyOpTranslator(name, true);
      }
  
      static AnyOpTranslator of(String name, boolean canTranslate) {
        return new AnyOpTranslator(name, canTranslate);
      }
  
      @Override
      public PCollection<Void> translate(Operator operator, PCollectionList<Void> inputs) {
        throw new IllegalStateException("Not meant to actually translate something.");
      }
  
      @Override
      public boolean canTranslate(Operator operator) {
        return canTranslate;
      }
  
      @Override
      public String getName() {
        return name;
      }
    }
  
    /** Dummy {@link Operator} used for testing purposes. */
    static class TestOperator extends Operator<Void> {
  
      TestOperator(@Nullable String name) {
        super(name, TypeDescriptors.voids());
      }
  
      static TestOperator of() {
        return new TestOperator(null);
      }
    }
  
    /** Dummy {@link Operator} used for testing purposes. */
    static class SecondTestOperator extends Operator<Void> {
  
      SecondTestOperator(@Nullable String name) {
        super(name, TypeDescriptors.voids());
      }
  
      static SecondTestOperator of() {
        return new SecondTestOperator(null);
      }
    }
  
    static void assertTranslator(
        String translatorId,
        Optional<OperatorTranslator<Void, Void, TestOperator>> maybeTranslator,
        Class<? extends OperatorTranslator> translatorClass) {
      assertNotNull(maybeTranslator);
      assertTrue(maybeTranslator.isPresent());
      OperatorTranslator<Void, Void, TestOperator> translator = maybeTranslator.get();
      assertEquals(translator.getClass(), translatorClass);
  
      Named namedTranslator = (Named) translator;
      assertEquals(translatorId, namedTranslator.getName());
    }
  }
  