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  package org.apache.cayenne.commitlog;
  
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.commitlog.model.ChangeMap;
  import org.apache.cayenne.di.DIBootstrap;
  import org.apache.cayenne.di.Injector;
  import org.apache.cayenne.di.Key;
  import org.apache.cayenne.di.Module;
  import org.junit.Test;
  
  import java.util.List;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  public class CommitLogModuleBuilderTest {
  
      @Test
      public void testListener_Object() {
  
          L listener = new L();
          Module m = b -> CommitLogModule.extend(b).addListener(listener);
  
          Injector i = DIBootstrap.createInjector(m);
          List<CommitLogListener> listeners = i.getInstance(Key.getListOf(CommitLogListener.class));
          assertEquals(1, listeners.size());
          assertTrue(listeners.contains(listener));
      }
  
      @Test
      public void testListener_Class() {
  
          Module m = b -> CommitLogModule.extend(b).addListener(L.class);
  
          Injector i = DIBootstrap.createInjector(m);
          List<CommitLogListener> listeners = i.getInstance(Key.getListOf(CommitLogListener.class));
          assertEquals(1, listeners.size());
          assertTrue(listeners.get(0) instanceof L);
      }
  
      public static class L implements CommitLogListener {
  
          @Override
          public void onPostCommit(ObjectContext originatingContext, ChangeMap changes) {
              // do nothing.
          }
      }
  
  }
  