HHH-19631 - Add test

Signed-off-by: Jan Schatteman <[email protected]>

Author: jrenaat

hibernate-core/src/test/java/org/hibernate/orm/test/events/PreDeleteEventListenerTest.java

@@ -0,0 +1,82 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.events;
+
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToMany;
+import org.hibernate.HibernateException;
+import org.hibernate.event.spi.EventType;
+
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.Jira;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+
+import static jakarta.persistence.FetchType.LAZY;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+/**
+ * @author Felix König
+ * @author Jan Schatteman
+ */
+@DomainModel (
+		annotatedClasses = {
+				PreDeleteEventListenerTest.Parent.class, PreDeleteEventListenerTest.Child.class
+		}
+)
+@SessionFactory
+@Jira( value = "https://hibernate.atlassian.net/browse/HHH-19631" )
+public class PreDeleteEventListenerTest {
+
+	@Test
+	void testAccessUninitializedCollectionInListener(SessionFactoryScope scope) {
+
+		scope.getSessionFactory().getEventListenerRegistry().appendListeners( EventType.PRE_DELETE,
+				event -> {
+					Parent parent = ((Parent) event.getEntity());
+					// dummy access
+					assertThrows( HibernateException.class, () -> parent.getChildren().size() );
+					return false;
+				}, event -> {
+					Parent parent = ((Parent) event.getEntity());
+					// dummy access
+					assertThrows( HibernateException.class, () -> parent.getChildren().contains(new Child()) );
+					return false;
+				} );
+
+		scope.inTransaction( session -> session.persist(new Parent()) );
+
+		scope.inTransaction(session -> {
+			var parent = session.createSelectionQuery("select p from Parent p", Parent.class).getSingleResult();
+			// triggers pre-delete event
+			session.remove(parent);
+			session.flush();
+		});
+	}
+
+	@Entity(name= "Parent")
+	public static class Parent {
+		@Id String id = UUID.randomUUID().toString();
+		@ManyToMany(fetch = LAZY)
+		Set<Child> children = new HashSet<>();
+		public Set<Child> getChildren() {
+			return children;
+		}
+	}
+
+	@Entity(name= "Child")
+	public static class Child {
+		@Id
+		String childId = UUID.randomUUID().toString();
+	}
+
+}