HHH-12540 - Add test for issue

Author: dreab8

hibernate-core/src/test/java/org/hibernate/jpa/test/transaction/JtaReusingEntityTransactionTest.java

@@ -0,0 +1,83 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.jpa.test.transaction;
+
+import java.util.List;
+import java.util.Map;
+import javax.persistence.Entity;
+import javax.persistence.EntityManager;
+import javax.persistence.EntityTransaction;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+
+import org.junit.Test;
+
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+/**
+ * @author Andrea Boriero
+ */
+public class JtaReusingEntityTransactionTest extends BaseEntityManagerFunctionalTestCase {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { TestEntity.class };
+	}
+
+	@Override
+	protected void addConfigOptions(Map options) {
+		super.addConfigOptions( options );
+		options.put( AvailableSettings.JPA_TRANSACTION_TYPE, "JTA" );
+	}
+
+	@Test
+	public void entityTransactionShouldBeReusableTest() {
+		EntityManager em = createEntityManager();
+		EntityTransaction transaction = null;
+		try {
+			transaction = em.getTransaction();
+			em.persist( new TestEntity() );
+			transaction.begin();
+			transaction.commit();
+			transaction.begin();
+			em.persist( new TestEntity() );
+			transaction.commit();
+		}
+		finally {
+			if ( transaction != null && transaction.isActive() ) {
+				transaction.rollback();
+			}
+			em.close();
+		}
+		em = createEntityManager();
+		try {
+			transaction = em.getTransaction();
+			transaction.begin();
+			List<TestEntity> results = em.createQuery( "from TestEntity" ).getResultList();
+			assertThat( results.size(), is( 2 ) );
+			transaction.commit();
+		}
+		finally {
+			if ( transaction != null && transaction.isActive() ) {
+				transaction.rollback();
+			}
+			em.close();
+		}
+	}
+
+	@Entity(name = "TestEntity")
+	public static class TestEntity {
+		@Id
+		@GeneratedValue
+		private Long id;
+	}
+}
+