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.kafka.connect.runtime;
  
  import org.apache.kafka.common.internals.Plugin;
  import org.apache.kafka.connect.runtime.isolation.TestPlugins;
  import org.apache.kafka.connect.source.SourceRecord;
  import org.apache.kafka.connect.transforms.Transformation;
  import org.apache.kafka.connect.transforms.predicates.Predicate;
  
  import org.junit.jupiter.api.Test;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  
  import static java.util.Collections.singletonMap;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @MockitoSettings(strictness = Strictness.STRICT_STUBS)
  public class TransformationStageTest {
  
      private final SourceRecord initial = new SourceRecord(singletonMap("initial", 1), null, null, null, null);
      private final SourceRecord transformed = new SourceRecord(singletonMap("transformed", 2), null, null, null, null);
  
      @Test
      public void apply() throws Exception {
          applyAndAssert(true, false, transformed);
          applyAndAssert(true, true, initial);
          applyAndAssert(false, false, initial);
          applyAndAssert(false, true, transformed);
      }
  
      @SuppressWarnings("unchecked")
      private void applyAndAssert(boolean predicateResult, boolean negate, SourceRecord expectedResult) throws Exception {
          Plugin<Predicate<SourceRecord>> predicatePlugin = mock(Plugin.class);
          Predicate<SourceRecord> predicate = mock(Predicate.class);
          when(predicate.test(any())).thenReturn(predicateResult);
          when(predicatePlugin.get()).thenReturn(predicate);
          Plugin<Transformation<SourceRecord>> transformationPlugin = mock(Plugin.class);
          Transformation<SourceRecord> transformation = mock(Transformation.class);
          if (expectedResult == transformed) {
              when(transformationPlugin.get()).thenReturn(transformation);
              when(transformation.apply(any())).thenReturn(transformed);
          }
          TransformationStage<SourceRecord> stage = new TransformationStage<>(
                  predicatePlugin,
                  "testPredicate",
                  null,
                  negate,
                  transformationPlugin,
                  "testTransformation",
                  null,
                  TestPlugins.noOpLoaderSwap()
          );
  
          assertEquals(expectedResult, stage.apply(initial));
  
          stage.close();
          verify(predicatePlugin).close();
          verify(transformationPlugin).close();
      }
  }
  