HHH-14387 Demonstrate regression when bytecode enhancement enabled

hibernate-core/src/test/java/org/hibernate/orm/test/annotations/collectionelement/recreate/BytecodeEnhancementElementCollectionRecreateTest.java

@@ -0,0 +1,85 @@
+/*
+ * 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.orm.test.annotations.collectionelement.recreate;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Arrays;
+import java.util.List;
+
+import org.hibernate.testing.bytecode.enhancement.BytecodeEnhancerRunner;
+import org.hibernate.testing.bytecode.enhancement.EnhancementOptions;
+import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import jakarta.persistence.ElementCollection;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.OrderColumn;
+
+@RunWith(BytecodeEnhancerRunner.class) // Pointless here, but necessary to reproduce the problem.
+@EnhancementOptions(lazyLoading = true)
+public class BytecodeEnhancementElementCollectionRecreateTest extends BaseCoreFunctionalTestCase {
+
+	@Override
+	protected Class[] getAnnotatedClasses() {
+		return new Class[] {
+				MyEntity.class
+		};
+	}
+
+	@Test
+	public void testRecreateCollection() {
+		inTransaction( session -> {
+			MyEntity entity = new MyEntity();
+			entity.setId( 1 );
+			entity.setElements( Arrays.asList( "one", "two" ) );
+			session.persist( entity );
+		} );
+
+		inTransaction( session -> {
+			MyEntity entity = session.get( MyEntity.class, 1 );
+			entity.setElements( Arrays.asList( "two", "three" ) );
+			session.persist( entity );
+		} );
+
+		inTransaction( session -> {
+			MyEntity entity = session.get( MyEntity.class, 1 );
+			assertThat( entity.getElements() )
+					.containsExactlyInAnyOrder( "two", "three" );
+		} );
+	}
+
+	@Entity(name = "myentity")
+	public static class MyEntity {
+		@Id
+		private Integer id;
+
+		@ElementCollection
+		@OrderColumn
+		private List<String> elements;
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+
+		public List<String> getElements() {
+			return elements;
+		}
+
+		public void setElements(List<String> elements) {
+			this.elements = elements;
+		}
+
+	}
+
+}