From 857de15b27938de5735f6a7668327f56ba2feebe Mon Sep 17 00:00:00 2001
From: Gavin King <gavin@hibernate.org>
Date: Fri, 20 Jun 2025 22:50:26 +0200
Subject: [PATCH] HHH-19566 test to reproduce bug

---
 .../annotations/ManyToOneFilterTest.java      | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 hibernate-core/src/test/java/org/hibernate/orm/test/where/annotations/ManyToOneFilterTest.java

diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/where/annotations/ManyToOneFilterTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/where/annotations/ManyToOneFilterTest.java
new file mode 100644
index 000000000000..9d838466b729
--- /dev/null
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/where/annotations/ManyToOneFilterTest.java
@@ -0,0 +1,84 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.where.annotations;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import org.hibernate.EntityFilterException;
+import org.hibernate.annotations.Filter;
+import org.hibernate.annotations.FilterDef;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.fail;
+
+@SessionFactory
+@DomainModel(annotatedClasses =
+		{ManyToOneFilterTest.X.class,
+		ManyToOneFilterTest.Y.class})
+class ManyToOneFilterTest {
+	@Test void test(SessionFactoryScope scope) {
+		scope.inTransaction(session -> {
+			Y y = new Y();
+			X x = new X();
+			x.id = -1;
+			y.x = x;
+			session.persist(x);
+			session.persist(y);
+		});
+		scope.inTransaction(session -> {
+			Y y = session.find(Y.class, 0L);
+			assertNotNull(y.x);
+		});
+		try {
+			scope.inTransaction( session -> {
+				session.enableFilter( "filter" ).validate();
+				var graph = session.createEntityGraph(Y.class);
+//			graph.removeAttributeNode(ManyToOneFilterTest_.Y_.x);
+				Y y = session.find( graph, 0L );
+			} );
+			fail();
+		}
+		catch (EntityFilterException efe) {
+			//required
+		}
+		try {
+			scope.inTransaction(session -> {
+				session.enableFilter( "filter" ).validate();
+				Y y = session.find(Y.class, 0L);
+			});
+			fail();
+		}
+		catch (EntityFilterException efe) {
+			//required
+		}
+	}
+
+	@Entity
+	@Table(name = "XX")
+	@FilterDef(name = "filter",
+			applyToLoadByKey = true)
+	@Filter(name = "filter", condition = "id>0")
+	static class X {
+		@Id
+		long id;
+	}
+	@Entity
+	@Table(name = "YY")
+	static class Y {
+		@Id
+		long id;
+		String name;
+		@ManyToOne
+		@JoinColumn(name = "xx")
+		X x;
+	}
+}