HHH-12565 Test showing TYPE for a TPC hierarchy leaf subtype fails

Author: beikov

hibernate-core/src/test/java/org/hibernate/test/unionsubclass3/UnionSubclassTest.java

@@ -6,10 +6,6 @@
  */
 package org.hibernate.test.unionsubclass3;
 
-import org.hibernate.Session;
-import org.hibernate.Transaction;
-import org.hibernate.query.Query;
-
 import org.hibernate.testing.TestForIssue;
 import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
 import org.junit.Test;
@@ -23,8 +19,6 @@
 import javax.persistence.InheritanceType;
 import javax.persistence.ManyToOne;
 
-import org.hibernate.test.locking.A;
-
 import static org.hibernate.testing.transaction.TransactionUtil.doInHibernate;
 import static org.junit.Assert.assertEquals;
 
@@ -81,8 +75,7 @@ public void testUnionSubclassClassResults() {
 			session.persist(child2);
 			session.persist(child3);
 			session.persist(child4);
-		} );
-
+		});
 		doInHibernate( this::sessionFactory, session -> {
 			List results = session.createQuery(
 				"select c " +
@@ -98,6 +91,19 @@ public void testUnionSubclassClassResults() {
 		} );
 	}
 
+	@Test
+	@TestForIssue( jiraKey = "HHH-12565" )
+	public void typeOfLeafTPC() {
+		doInHibernate( this::sessionFactory, session -> {
+			List results = session.createQuery(
+					"select TYPE(f) " +
+							"from Father f" +
+							" where f.id = -1")
+					.getResultList();
+			assertEquals(0, results.size());
+		} );
+	}
+
 	@Entity(name = "Child")
 	public static class Child
 	{