From 1b3f3063de6c614ddbc7675f7b2d2a53c2e9c7be Mon Sep 17 00:00:00 2001
From: Edgar Asatryan <nstdio@gmail.com>
Date: Fri, 28 Nov 2025 18:59:55 +0400
Subject: [PATCH] A test case for HHH-19964.

---
 orm/hibernate-orm-7/pom.xml                   |  5 ++++
 .../org/hibernate/bugs/JPAUnitTestCase.java   | 23 +++++++++++++++++--
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/orm/hibernate-orm-7/pom.xml b/orm/hibernate-orm-7/pom.xml
index 5ad920b40..680b2f330 100644
--- a/orm/hibernate-orm-7/pom.xml
+++ b/orm/hibernate-orm-7/pom.xml
@@ -78,6 +78,11 @@
 			<version>${version.org.assertj.assertj-core}</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+			<version>2.20.1</version>
+		</dependency>
 	</dependencies>
 
 	<build>
diff --git a/orm/hibernate-orm-7/src/test/java/org/hibernate/bugs/JPAUnitTestCase.java b/orm/hibernate-orm-7/src/test/java/org/hibernate/bugs/JPAUnitTestCase.java
index 3734df49a..c4b070702 100644
--- a/orm/hibernate-orm-7/src/test/java/org/hibernate/bugs/JPAUnitTestCase.java
+++ b/orm/hibernate-orm-7/src/test/java/org/hibernate/bugs/JPAUnitTestCase.java
@@ -1,5 +1,11 @@
 package org.hibernate.bugs;
 
+import static org.hibernate.type.SqlTypes.JSON;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import java.util.Map;
+import org.hibernate.annotations.JdbcTypeCode;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -28,11 +34,24 @@ void destroy() {
 	// Entities are auto-discovered, so just add them anywhere on class-path
 	// Add your tests, using standard JUnit.
 	@Test
-	void hhh123Test() throws Exception {
+	void hhh19964Test() throws Exception {
 		EntityManager entityManager = entityManagerFactory.createEntityManager();
 		entityManager.getTransaction().begin();
-		// Do stuff...
+
+		var entity = new Foo();
+		entity.properties = Map.of("a", 1, "b", 2);
+		entityManager.persist(entity);
+
 		entityManager.getTransaction().commit();
 		entityManager.close();
 	}
+
+	@Entity
+	public class Foo {
+		@Id
+		long id;
+
+		@JdbcTypeCode(JSON)
+		Object properties;
+	}
 }