HHH-17122 test for access to generated id from @PrePersist

hibernate-core/src/test/java/org/hibernate/orm/test/jpa/callbacks/PrePersistIdTest.java

@@ -0,0 +1,39 @@
+package org.hibernate.orm.test.jpa.callbacks;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.PrePersist;
+import jakarta.persistence.Transient;
+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 java.util.UUID;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@SessionFactory
+@DomainModel(annotatedClasses = PrePersistIdTest.GeneratedIdInCallback.class)
+public class PrePersistIdTest {
+    @Test void test(SessionFactoryScope scope) {
+        scope.inTransaction(s -> {
+            GeneratedIdInCallback entity = new GeneratedIdInCallback();
+            s.persist(entity);
+            assertTrue(entity.success);
+            assertNotNull(entity.uuid);
+        });
+    }
+
+    @Entity
+    static class GeneratedIdInCallback {
+        @Transient boolean success;
+        @Id @GeneratedValue UUID uuid;
+        @PrePersist void checkId() {
+            success = uuid != null;
+            assertNotNull(uuid);
+        }
+    }
+}