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  package org.apache.cayenne.map;
  
  import org.apache.cayenne.GenericPersistentObject;
  import org.apache.cayenne.CayenneRuntimeException;
  import org.apache.cayenne.di.Inject;
  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 java.util.Collections;
  
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.fail;
  
  @UseCayenneRuntime(CayenneProjects.GENERIC_PROJECT)
  public class EntityResolverGenericStackIT extends RuntimeCase {
  
      @Inject
      private EntityResolver resolver;
  
      @Test
      public void testObjEntityLookupDuplicates() {
  
          DataMap generic = resolver.getDataMap("generic");
          EntityResolver resolver = new EntityResolver(Collections.singleton(generic));
  
          ObjEntity g1 = resolver.getObjEntity("Generic1");
          assertNotNull(g1);
  
          ObjEntity g2 = resolver.getObjEntity("Generic2");
          assertNotNull(g2);
  
          assertNotSame(g1, g2);
          assertNull(resolver.getObjEntity(Object.class));
  
          try {
              resolver.getObjEntity(GenericPersistentObject.class);
              fail("two entities mapped to the same class... resolver must have thrown.");
          }
          catch (CayenneRuntimeException e) {
              // expected
          }
      }
  }
  