From 3711e6ea788f4c001d01f774a866df1de8f0d343 Mon Sep 17 00:00:00 2001
From: Marco Belladelli <marcobladel@gmail.com>
Date: Mon, 15 Apr 2024 14:19:00 +0200
Subject: [PATCH] HHH-17959 Add test for issue

---
 .../generics/GenericPathComparisonTest.java   | 29 ++++++++++++++++---
 1 file changed, 25 insertions(+), 4 deletions(-)

diff --git a/hibernate-core/src/test/java/org/hibernate/orm/test/annotations/generics/GenericPathComparisonTest.java b/hibernate-core/src/test/java/org/hibernate/orm/test/annotations/generics/GenericPathComparisonTest.java
index 3ec94f1ab2..d2441d4182 100644
--- a/hibernate-core/src/test/java/org/hibernate/orm/test/annotations/generics/GenericPathComparisonTest.java
+++ b/hibernate-core/src/test/java/org/hibernate/orm/test/annotations/generics/GenericPathComparisonTest.java
@@ -8,14 +8,10 @@ package org.hibernate.orm.test.annotations.generics;
 
 import java.io.Serializable;
 
-import org.hibernate.cfg.AvailableSettings;
-
 import org.hibernate.testing.orm.junit.DomainModel;
 import org.hibernate.testing.orm.junit.Jira;
-import org.hibernate.testing.orm.junit.ServiceRegistry;
 import org.hibernate.testing.orm.junit.SessionFactory;
 import org.hibernate.testing.orm.junit.SessionFactoryScope;
-import org.hibernate.testing.orm.junit.Setting;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
@@ -26,7 +22,9 @@ import jakarta.persistence.MappedSuperclass;
 import jakarta.persistence.TypedQuery;
 import jakarta.persistence.criteria.CriteriaBuilder;
 import jakarta.persistence.criteria.CriteriaQuery;
+import jakarta.persistence.criteria.Path;
 import jakarta.persistence.criteria.Root;
+import jakarta.persistence.criteria.Subquery;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
@@ -110,6 +108,29 @@ public class GenericPathComparisonTest {
 		} );
 	}
 
+	@Test
+	@Jira( "https://hibernate.atlassian.net/browse/HHH-17959" )
+	public void testInSubquery(SessionFactoryScope scope) {
+		scope.inTransaction( session -> executeQuery( session.createQuery(
+				"from UserEntity where id in (select id from UserEntity where id = 1)",
+				UserEntity.class
+		) ) );
+	}
+
+	@Test
+	@Jira( "https://hibernate.atlassian.net/browse/HHH-17959" )
+	public void testInSubqueryCriteria(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			final CriteriaBuilder cb = session.getCriteriaBuilder();
+			final CriteriaQuery<UserEntity> query = cb.createQuery( UserEntity.class );
+			final Root<UserEntity> from = query.from( UserEntity.class );
+			final Subquery<Long> subquery = query.subquery( Long.class );
+			final Path<Long> id = subquery.from( UserEntity.class ).get( "id" );
+			query.where( from.get( "id" ).in( subquery.select( id ).where( cb.equal( id, 1L ) ) ) );
+			executeQuery( session.createQuery( query ) );
+		} );
+	}
+
 	private void executeQuery(TypedQuery<UserEntity> query) {
 		final UserEntity result = query.getSingleResult();
 		assertThat( result.getId() ).isEqualTo( 1L );