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  package org.apache.cayenne.access;
  
  import org.apache.cayenne.ObjectContext;
  import org.apache.cayenne.di.Inject;
  import org.apache.cayenne.query.ObjectSelect;
  import org.apache.cayenne.testdo.inheritance_flat.Group;
  import org.apache.cayenne.testdo.inheritance_flat.Role;
  import org.apache.cayenne.testdo.inheritance_flat.User;
  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.Test;
  
  import static org.junit.Assert.assertTrue;
  
  /**
   * Special test cases per CAY-1378, CAY-1379.
   */
  @UseCayenneRuntime(CayenneProjects.INHERITANCE_SINGLE_TABLE1_PROJECT)
  public class SingleTableInheritance1IT extends RuntimeCase {
  
      @Inject
      private ObjectContext context;
  
      @Test
      public void testGroupActions() throws Exception {
  
          User user = context.newObject(User.class);
          user.setName("test_user");
  
          Group group1 = context.newObject(Group.class);
          group1.setName("test_group1");
  
          Group group2 = context.newObject(Group.class);
          group2.setName("test_group2");
  
          group1.addToGroupMembers(user);
          group2.addToGroupMembers(group1);
  
          group2.getObjectContext().commitChanges();
  
          // Per CAY-1379 removing user and then refetching resulted in a FFE downstream
          group1.removeFromGroupMembers(user);
          ObjectSelect<Group> query = ObjectSelect.query(Group.class)
                  .where(Role.ROLE_GROUPS.contains(group2));
          context.performQuery(query);
          context.commitChanges();
  
          context.deleteObjects(group1);
          context.deleteObjects(group2);
          context.deleteObjects(user);
          context.commitChanges();
      }
  
      @Test
      public void testFlattenedNullifyNullifyDeleteRules() throws Exception {
  
          User user = context.newObject(User.class);
          user.setName("test_user");
          Group group = context.newObject(Group.class);
          group.setName("test_group");
          group.addToGroupMembers(user);
          context.commitChanges();
  
          context.deleteObjects(user);
          assertTrue(group.getGroupMembers().isEmpty());
  
          context.commitChanges();
  
          // here Cayenne would throw per CAY-1378 on an attempt to delete a previously
          // related transient object
          context.deleteObjects(group);
          context.commitChanges();
      }
  }
  