HHH-7315 Add test for locking with joined inheritance

hibernate-core/src/test/java/org/hibernate/orm/test/locking/JoinedInheritancePessimisticLockingTest.java

@@ -0,0 +1,107 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.locking;
+
+import jakarta.persistence.Basic;
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Inheritance;
+import jakarta.persistence.InheritanceType;
+import jakarta.persistence.LockModeType;
+import jakarta.persistence.Version;
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jira;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+@Jpa(
+		annotatedClasses =  {
+				JoinedInheritancePessimisticLockingTest.BaseThing.class,
+				JoinedInheritancePessimisticLockingTest.ConcreteThing.class,
+				JoinedInheritancePessimisticLockingTest.AnotherConcreteThing.class,
+		}
+)
+@Jira("https://hibernate.atlassian.net/browse/HHH-7315")
+public class JoinedInheritancePessimisticLockingTest {
+
+	@BeforeEach
+	public void setup(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					ConcreteThing t1 = new ConcreteThing();
+					t1.id = 1L;
+					t1.name = "t1";
+					t1.aProp = "abc";
+					AnotherConcreteThing t2 = new AnotherConcreteThing();
+					t2.id = 2L;
+					t2.name = "t2";
+					t2.anotherProp = "def";
+					entityManager.persist( t1 );
+					entityManager.persist( t2 );
+				}
+		);
+	}
+
+	@AfterEach
+	public void tearDown(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager ->
+						entityManager.createQuery( "delete from BaseThing" ).executeUpdate()
+		);
+	}
+
+	@Test
+	public void findWithLock(EntityManagerFactoryScope scope) {
+		scope.inTransaction(entityManager -> {
+			BaseThing t = entityManager.find( BaseThing.class, 1L, LockModeType.PESSIMISTIC_WRITE );
+			assertEquals( LockModeType.PESSIMISTIC_WRITE, entityManager.getLockMode( t ) );
+		});
+	}
+
+	@Test
+	public void findThenLock(EntityManagerFactoryScope scope) {
+		scope.inTransaction(entityManager -> {
+			BaseThing t = entityManager.find( BaseThing.class, 1L );
+			entityManager.lock( t, LockModeType.PESSIMISTIC_WRITE );
+			assertEquals( LockModeType.PESSIMISTIC_WRITE, entityManager.getLockMode( t ) );
+		});
+	}
+
+	@Entity(name = "BaseThing")
+	@Inheritance(strategy = InheritanceType.JOINED)
+	public static abstract class BaseThing  {
+		@Id
+		@Column(nullable = false)
+		Long id;
+
+		@Basic(optional = false)
+		@Column(nullable = false)
+		String name;
+
+		@Version
+		@Column(name = "version")
+		int version;
+
+	}
+	@Entity(name = "ConcreteThing")
+	public static class ConcreteThing extends BaseThing {
+		@Basic(optional = false)
+		@Column(nullable = false)
+		String aProp;
+	}
+
+
+	@Entity(name = "AnotherConcreteThing")
+	public static class AnotherConcreteThing extends BaseThing {
+		@Basic(optional = false)
+		@Column(nullable = false)
+		String anotherProp;
+	}
+}