HHH-10993 - Added testcase for Lazy Loaded collections outside transaction in bytecode enhanced entities

(cherry picked from commit 80e092a432)

hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/EnhancerTest.java

@@ -33,6 +33,7 @@ import org.hibernate.test.bytecode.enhancement.lazy.HHH_10708.UnexpectedDeleteTh
 import org.hibernate.test.bytecode.enhancement.lazy.HHH_10708.UnexpectedDeleteTwoTestTask;
 import org.hibernate.test.bytecode.enhancement.lazy.LazyBasicFieldNotInitializedTestTask;
 import org.hibernate.test.bytecode.enhancement.lazy.LazyCollectionLoadingTestTask;
+import org.hibernate.test.bytecode.enhancement.lazy.LazyCollectionNoTransactionLoadingTestTask;
 import org.hibernate.test.bytecode.enhancement.lazy.LazyLoadingIntegrationTestTask;
 import org.hibernate.test.bytecode.enhancement.lazy.LazyLoadingTestTask;
 import org.hibernate.test.bytecode.enhancement.lazy.LazyProxyOnEnhancedEntityTestTask;
@@ -124,6 +125,11 @@ public class EnhancerTest extends BaseUnitTestCase {
 	public void testLazyGroups() {
 		EnhancerTestUtils.runEnhancerTestTask( LazyGroupAccessTestTask.class );
 	}
+	
+	@Test
+	public void testLazyCollectionNoTransactionHandling() {
+		EnhancerTestUtils.runEnhancerTestTask( LazyCollectionNoTransactionLoadingTestTask.class );
+	}
 
 	@Test(timeout = 10000)
 	@TestForIssue( jiraKey = "HHH-10055" )

hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/lazy/LazyCollectionNoTransactionLoadingTestTask.java

@@ -0,0 +1,102 @@
+/*
+ * 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.test.bytecode.enhancement.lazy;
+
+import org.hibernate.Hibernate;
+import org.hibernate.Session;
+import org.hibernate.cfg.Configuration;
+import org.hibernate.cfg.Environment;
+import org.hibernate.proxy.HibernateProxy;
+import org.hibernate.test.bytecode.enhancement.AbstractEnhancerTestTask;
+import org.hibernate.test.bytecode.enhancement.EnhancerTestUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.hamcrest.CoreMatchers.equalTo;
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.CoreMatchers.not;
+import static org.hamcrest.CoreMatchers.notNullValue;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.IsSame.sameInstance;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Simple test for lazy collection handling in the new bytecode support.
+ * Prior to HHH-10055 lazy collections were simply not handled.  The tests
+ * initially added for HHH-10055 cover the more complicated case of handling
+ * lazy collection initialization outside of a transaction; that is a bigger
+ * fix, and I first want to get collection handling to work here in general.
+ *
+ * @author Steve Ebersole
+ * @author John O'Hara
+ *
+ */
+public class LazyCollectionNoTransactionLoadingTestTask extends AbstractEnhancerTestTask {
+	private static final int CHILDREN_SIZE = 10;
+	private Long parentID;
+	private Long lastChildID;
+
+	public Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] {Parent.class, Child.class};
+	}
+
+	public void prepare() {
+		Configuration cfg = new Configuration();
+		cfg.setProperty( Environment.ENABLE_LAZY_LOAD_NO_TRANS, "true" );
+		cfg.setProperty( Environment.USE_SECOND_LEVEL_CACHE, "false" );
+		super.prepare( cfg );
+
+		Session s = getFactory().openSession();
+		s.beginTransaction();
+
+		Parent parent = new Parent();
+		parent.setChildren( new ArrayList<Child>() );
+		for ( int i = 0; i < CHILDREN_SIZE; i++ ) {
+			final Child child = new Child();
+			child.setParent( parent );
+			s.persist( child );
+			lastChildID = child.getId();
+		}
+		s.persist( parent );
+		parentID = parent.getId();
+
+		s.getTransaction().commit();
+		s.close();
+	}
+
+	public void execute() {
+		Session s = getFactory().openSession();
+		s.beginTransaction();
+
+		Parent parent = s.load( Parent.class, parentID );
+		assertThat( parent, notNullValue() );
+		assertThat( parent, not( instanceOf( HibernateProxy.class ) ) );
+		assertThat( parent, not( instanceOf( HibernateProxy.class ) ) );
+		assertFalse( Hibernate.isPropertyInitialized( parent, "children" ) );
+
+		s.getTransaction().commit();
+		s.close();
+
+		s = null;
+
+		List children1 = parent.getChildren();
+		List children2 = parent.getChildren();
+
+		assertTrue( Hibernate.isPropertyInitialized( parent, "children" ) );
+
+		EnhancerTestUtils.checkDirtyTracking( parent );
+		assertThat( children1, sameInstance( children2 ) );
+		assertThat( children1.size(), equalTo( CHILDREN_SIZE ) );
+
+	}
+
+	protected void cleanup() {
+	}
+
+}