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.transforms;
  
  import org.apache.kafka.common.utils.AppInfoParser;
  import org.apache.kafka.connect.data.Schema;
  import org.apache.kafka.connect.data.Struct;
  import org.apache.kafka.connect.sink.SinkRecord;
  
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Test;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  public class HoistFieldTest {
      private final HoistField<SinkRecord> xform = new HoistField.Key<>();
  
      @AfterEach
      public void teardown() {
          xform.close();
      }
  
      @Test
      public void schemaless() {
          xform.configure(Collections.singletonMap("field", "magic"));
  
          final SinkRecord record = new SinkRecord("test", 0, null, 42, null, null, 0);
          final SinkRecord transformedRecord = xform.apply(record);
  
          assertNull(transformedRecord.keySchema());
          assertEquals(Collections.singletonMap("magic", 42), transformedRecord.key());
      }
  
      @Test
      public void withSchema() {
          xform.configure(Collections.singletonMap("field", "magic"));
  
          final SinkRecord record = new SinkRecord("test", 0, Schema.INT32_SCHEMA, 42, null, null, 0);
          final SinkRecord transformedRecord = xform.apply(record);
  
          assertEquals(Schema.Type.STRUCT, transformedRecord.keySchema().type());
          assertEquals(record.keySchema(),  transformedRecord.keySchema().field("magic").schema());
          assertEquals(42, ((Struct) transformedRecord.key()).get("magic"));
      }
  
      @Test
      public void testSchemalessMapIsMutable() {
          xform.configure(Collections.singletonMap("field", "magic"));
  
          final SinkRecord record = new SinkRecord("test", 0, null, 420, null, null, 0);
          final SinkRecord transformedRecord = xform.apply(record);
  
          assertNull(transformedRecord.keySchema());
          @SuppressWarnings("unchecked")
          Map<String, Object> actualKey = (Map<String, Object>) transformedRecord.key();
          actualKey.put("k", "v");
          Map<String, Object> expectedKey = new HashMap<>();
          expectedKey.put("k", "v");
          expectedKey.put("magic", 420);
          assertEquals(expectedKey, actualKey);
      }
  
      @Test
      public void testHoistFieldVersionRetrievedFromAppInfoParser() {
          assertEquals(AppInfoParser.getVersion(), xform.version());
      }
  
  }
  