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    * 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
    *
    *      https://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.commons.beanutils2.bugs;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.Future;
  
  import org.apache.commons.beanutils2.FluentPropertyBeanIntrospector;
  import org.apache.commons.beanutils2.PropertyUtilsBean;
  import org.junit.jupiter.api.Test;
  
  /**
   * Fix BEANUTILS-541
   *
   * @see <a href="https://issues.apache.org/jira/browse/BEANUTILS-541">https://issues.apache.org/jira/browse/BEANUTILS-541</a>
   */
  public class Jira541Test {
  
      public static class BaseType {
  
          private String field;
  
          public String getField() {
              return field;
          }
  
          public BaseType setField(final String objectName) {
              this.field = objectName;
              return this;
          }
      }
  
      public static class SubTypeA extends BaseType {
  
          @Override
          public SubTypeA setField(final String field) {
              super.setField(field);
              return this;
          }
      }
  
      public static class SubTypeB extends BaseType {
  
      }
  
      private static final String FIELD_NAME = "field";
  
      private static final String FIELD_VALUE = "name";
  
      private static void testImpl() throws ReflectiveOperationException {
          final PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();
          propertyUtilsBean.addBeanIntrospector(new FluentPropertyBeanIntrospector());
  
          // note: we should setProperty first on SubTypeA (with overridden setter), then on subTypeB
          // but not vice versa
          final SubTypeA subTypeA = new SubTypeA();
          propertyUtilsBean.setProperty(subTypeA, FIELD_NAME, FIELD_VALUE);
  
          final SubTypeB subTypeB = new SubTypeB();
          propertyUtilsBean.setProperty(subTypeB, FIELD_NAME, FIELD_VALUE);
  
          assertEquals(FIELD_VALUE, subTypeA.getField());
          assertEquals(FIELD_VALUE, subTypeB.getField());
      }
  
      @Test
      public void testFluentBeanIntrospectorOnOverriddenSetter() throws Exception {
          testImpl();
      }
  
      @Test
      public void testFluentBeanIntrospectorOnOverriddenSetterConcurrent() throws Exception {
          final ExecutorService executionService = Executors.newFixedThreadPool(256);
          try {
              final List<Future<?>> futures = new ArrayList<>();
              for (int i = 0; i < 10000; i++) {
                  futures.add(executionService.submit(() -> {
                      testImpl();
                      return null;
                  }));
             }
             for (final Future<?> future : futures) {
                 future.get();
             }
         } finally {
             executionService.shutdown();
         }
     }
 }