Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HHH-16542 ( https://hibernate.atlassian.net/browse/HHH-16542?atlOrigin=eyJpIjoiZTJmZG... ) Re: (Jakarta EE 10 Platform TCK) jpa/core/entitytest/cascadeall/oneXone/cascadeAll1X1Test10 test regression ( https://hibernate.atlassian.net/browse/HHH-16542?atlOrigin=eyJpIjoiZTJmZG... ) this is the test I used import org.hibernate.testing.bytecode.enhancement.BytecodeEnhancerRunner; import org.hibernate.testing.bytecode.enhancement.EnhancementOptions; import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase; import org.junit.Test; import org.junit.runner.RunWith; import jakarta.persistence.Basic; import jakarta.persistence.CascadeType; import jakarta.persistence.Entity; import jakarta.persistence.Id; import jakarta.persistence.JoinColumn; import jakarta.persistence.OneToOne; import jakarta.persistence.Table; @RunWith(BytecodeEnhancerRunner.class) @EnhancementOptions(inlineDirtyChecking = true, lazyLoading = true, extendedEnhancement = true) public class TestIt extends BaseCoreFunctionalTestCase { @Override protected Class<?>[] getAnnotatedClasses() { return new Class[]{ A.class, B.class }; } @Test public void testIt(){ inTransaction( entityManager -> { } ); } @Entity @Table(name = "AEJB_1X1_BI_BTOB") public class A implements java.io.Serializable { // =========================================================== // instance variables @Id protected String id; @Basic protected String name; @Basic protected int value; // =========================================================== // constructors public A() { } public A(String id, String name, int value) { this.id = id; this.name = name; this.value = value; } public A(String id, String name, int value, B b1) { this.id = id; this.name = name; this.value = value; this.b1 = b1; } // =========================================================== // relationship fields @OneToOne(targetEntity = B.class, mappedBy = "a1", orphanRemoval = true) protected B b1; // ======================================================================= // Business methods for test cases public B getB1() { return b1; } public boolean isB1() { return getB1() != null; } public B getB1Info() { if (isB1()) { B b1 = getB1(); return b1; } else return null; } public String getAId() { return id; } public String getAName() { return name; } public int getAValue() { return value; } } @Entity @Table(name = "BEJB_1X1_BI_BTOB") public class B implements java.io.Serializable { // =========================================================== // instance variables @Id protected String id; @Basic protected String name; @Basic protected int value; // =========================================================== // relationship fields @OneToOne(targetEntity = A.class, cascade = CascadeType.ALL, optional = true, orphanRemoval = true) @JoinColumn(name = "FK_FOR_AEJB_1X1_BI_BTOB") protected A a1; // =========================================================== // constructors public B() { } public B(String id, String name, int value) { this.id = id; this.name = name; this.value = value; } public B(String id, String name, int value, A a1) { this.id = id; this.name = name; this.value = value; this.a1 = a1; } // ========================================================== // Business Methods for Test Cases public A getA1() { return a1; } public void setA1(A a1) { this.a1 = a1; } public boolean isA() { return getA1() != null; } public A getA1Info() { if (isA()) { A a1 = getA1(); return a1; } else return null; } public String getBId() { return id; } public String getBName() { return name; } public void setBName(String name) { this.name = name; } public int getBValue() { return value; } } } but as I said I think the exception is the expected behaviour with bytecode enhancement, see https://github.com/hibernate/hibernate-orm/blob/main/hibernate-core/src/m... ( https://hibernate.atlassian.net/browse/HHH-16542#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16542#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100224- sha1:4684446 )