add test for lock modes

(cherry picked from commit 50440e0)

Author: gavinking

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

@@ -0,0 +1,107 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.locking;
+
+import jakarta.persistence.Cacheable;
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import org.hibernate.LockMode;
+import org.hibernate.ObjectDeletedException;
+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.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+@SessionFactory
+@DomainModel(annotatedClasses = LockModeAcrossTransactionsTest.Cached.class)
+class LockModeAcrossTransactionsTest {
+
+	@Test void testWithEvict(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			session.persist( new Cached(5L) );
+		} );
+		scope.getSessionFactory().getCache().evict(Cached.class);
+		scope.inSession( session -> {
+			Cached cached = session.find( Cached.class, 5L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.getSessionFactory().getCache().evict(Cached.class);
+		scope.inTransaction( session -> {
+			Cached cached = session.find( Cached.class, 5L );
+			assertEquals( LockMode.READ, session.getCurrentLockMode( cached ) );
+		} );
+		scope.getSessionFactory().getCache().evict(Cached.class);
+		scope.inSession( session -> {
+			Cached cached = session.createQuery( "from Cached", Cached.class ).getSingleResult();
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.getSessionFactory().getCache().evict(Cached.class);
+		scope.inTransaction( session -> {
+			Cached cached = session.createQuery( "from Cached", Cached.class ).getSingleResult();
+			assertEquals( LockMode.READ, session.getCurrentLockMode( cached ) );
+		} );
+		scope.getSessionFactory().getCache().evict(Cached.class);
+		scope.inSession( session -> {
+			Cached cached = session.fromTransaction( tx -> {
+				Cached c = session.find( Cached.class, 5L );
+				assertEquals( LockMode.READ, session.getCurrentLockMode( c ) );
+				return c;
+			} );
+			session.inTransaction( tx -> {
+				assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+			} );
+		} );
+		scope.inSession( session -> {
+			Cached cached = session.find( Cached.class, 5L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.inTransaction( session -> {
+			Cached cached = session.find( Cached.class, 5L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+		} );
+	}
+
+	@Test void testWithoutEvict(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			Cached cached = new Cached( 3L );
+			session.persist( cached );
+			assertEquals( LockMode.WRITE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.inSession( session -> {
+			Cached cached = session.find( Cached.class, 3L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.inTransaction( session -> {
+			Cached cached = session.find( Cached.class, 3L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+			cached.name = "Gavin";
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+			session.flush();
+			assertEquals( LockMode.WRITE, session.getCurrentLockMode( cached ) );
+		} );
+		scope.inTransaction( session -> {
+			Cached cached = session.find( Cached.class, 3L );
+			assertEquals( LockMode.NONE, session.getCurrentLockMode( cached ) );
+			session.remove( cached );
+			assertThrows( ObjectDeletedException.class,
+					() -> session.getCurrentLockMode( cached ) );
+		} );
+	}
+
+	@Cacheable @Entity(name = "Cached")
+	static class Cached {
+		@Id
+		Long id;
+		String name;
+		Cached(Long id) {
+			this.id = id;
+		}
+		Cached() {
+		}
+	}
+}