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  package org.apache.cayenne;
  
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.testdo.testmap.ArtGroup;
  import org.apache.cayenne.unit.di.runtime.CayenneProjects;
  import org.apache.cayenne.unit.di.runtime.RuntimeCase;
  import org.apache.cayenne.unit.di.runtime.UseCayenneRuntime;
  import org.junit.Before;
  import org.junit.Test;
  
  @UseCayenneRuntime(CayenneProjects.TESTMAP_PROJECT)
  public class CDOReflexiveRelDeleteIT extends RuntimeCase {
  
      @Inject
      private ObjectContext context;
      
      private ArtGroup parentGroup;
      private ArtGroup childGroup1;
      private ArtGroup childGroup2;
      private ArtGroup childGroup3;
  
      @Before
      public void setUp() throws Exception {
  
          parentGroup = context.newObject(ArtGroup.class);
          parentGroup.setName("parent");
  
          childGroup1 = context.newObject(ArtGroup.class);
          childGroup1.setName("child1");
          childGroup1.setToParentGroup(parentGroup);
  
          childGroup2 = context.newObject(ArtGroup.class);
          childGroup2.setName("child2");
          childGroup2.setToParentGroup(parentGroup);
  
          childGroup3 = context.newObject(ArtGroup.class);
          childGroup3.setName("subchild");
          childGroup3.setToParentGroup(childGroup1);
  
          context.commitChanges();
      }
  
      // Test various delete orders. There are more possible literal combinations, but the
      // ones below fairly well
      // encompass the various orders that might be a problem. Add more if additional
      // problems come to light
      @Test
      public void testReflexiveRelationshipDelete1() {
          context.deleteObjects(parentGroup);
          context.deleteObjects(childGroup1);
          context.deleteObjects(childGroup2);
          context.deleteObjects(childGroup3);
          context.commitChanges();
      }
  
      @Test
      public void testReflexiveRelationshipDelete2() {
          context.deleteObjects(childGroup1);
          context.deleteObjects(parentGroup);
          context.deleteObjects(childGroup2);
          context.deleteObjects(childGroup3);
          context.commitChanges();
      }
  
      @Test
      public void testReflexiveRelationshipDelete3() {
          context.deleteObjects(childGroup1);
          context.deleteObjects(childGroup3);
          context.deleteObjects(parentGroup);
          context.deleteObjects(childGroup2);
          context.commitChanges();
      }
  
      @Test
      public void testReflexiveRelationshipDelete4() {
          context.deleteObjects(childGroup3);
          context.deleteObjects(parentGroup);
          context.deleteObjects(childGroup1);
          context.deleteObjects(childGroup2);
          context.commitChanges();
      }
  
  }
  