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HHH-18842 Add test for issue
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dreab8 committed Nov 21, 2024
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/*
* SPDX-License-Identifier: LGPL-2.1-or-later
* Copyright Red Hat Inc. and Hibernate Authors
*/
package org.hibernate.orm.test.jpa.orphan.onetomany.merge;

import jakarta.persistence.CascadeType;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.OneToMany;
import org.hibernate.testing.orm.junit.DomainModel;
import org.hibernate.testing.orm.junit.JiraKey;
import org.hibernate.testing.orm.junit.SessionFactory;
import org.hibernate.testing.orm.junit.SessionFactoryScope;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.assertj.core.api.Assertions.assertThat;

@DomainModel(
annotatedClasses = {
MergeCascadeWithMapCollectionTest.Parent.class,
MergeCascadeWithMapCollectionTest.Child.class,
}
)
@SessionFactory
@JiraKey("HHH-18842")
public class MergeCascadeWithMapCollectionTest {

private static final Long ID_PARENT_WITHOUT_CHILDREN = 1L;
private static final Long ID_PARENT_WITH_CHILDREN = 2L;

@BeforeEach
public void setUp(SessionFactoryScope scope) {
scope.inTransaction(
session -> {
Parent parent = new Parent( ID_PARENT_WITHOUT_CHILDREN, "old name" );
session.persist( parent );

Parent parent2 = new Parent( ID_PARENT_WITH_CHILDREN, "old name" );
Child child = new Child( 2l, "Child" );
parent2.addChild( child );

session.persist( child );
session.persist( parent2 );
}
);
}

@AfterEach
private void tearDown(SessionFactoryScope scope) {
scope.inTransaction(
session -> {
session.createMutationQuery( "delete from Parent" ).executeUpdate();
session.createMutationQuery( "delete from Child" ).executeUpdate();
}
);
}

@Test
public void testMergeParentWihoutChildren(SessionFactoryScope scope) {
scope.inTransaction(
session -> {
Parent parent = new Parent( ID_PARENT_WITHOUT_CHILDREN, "new name" );
Parent merged = session.merge( parent );
assertThat( merged.getName() ).isEqualTo( "new name" );
}
);
}

@Test
public void testMergeParentWithChildren(SessionFactoryScope scope) {
scope.inTransaction(
session -> {
Parent parent = new Parent( ID_PARENT_WITH_CHILDREN, "new name" );
Child child = new Child( 2l, "Child" );
parent.addChild( child );
Parent merged = session.merge( parent );
assertThat( merged.getName() ).isEqualTo( "new name" );
}
);
scope.inTransaction(
session -> {
Parent parent = session.get( Parent.class, ID_PARENT_WITH_CHILDREN );
assertThat( parent.getChildren().size() ).isEqualTo( 1 );
}
);
}

@Test
public void testMergeParentWithChildren2(SessionFactoryScope scope) {
scope.inTransaction(
session -> {
Parent parent = new Parent( ID_PARENT_WITH_CHILDREN, "new name" );
session.merge( parent );
}
);
scope.inTransaction(
session -> {
Parent parent = session.get( Parent.class, ID_PARENT_WITH_CHILDREN );
assertThat( parent.getName() ).isEqualTo( "new name" );
assertThat( parent.getChildren().size() ).isEqualTo( 0 );

List<Child> children = session.createQuery( "Select c from Child c", Child.class ).list();
assertThat( children.size() ).isEqualTo( 1 );
}
);
}

@Entity(name = "Parent")
public static class Parent {

@Id
private Long id;

private String name;

@OneToMany(cascade = CascadeType.MERGE)
private Map<String, Child> children;

public Parent() {
}

public Parent(Long id, String name) {
this.id = id;
this.name = name;
}

public Long getId() {
return id;
}

public void setId(Long id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Map<String, Child> getChildren() {
return children;
}

public void setChildren(Map<String, Child> children) {
this.children = children;
}

public void addChild(Child child) {
if ( children == null ) {
children = new HashMap<>();
}
children.put( child.getName(), child );
}
}

@Entity(name = "Child")
public static class Child {

@Id
private Long id;

private String name;

public Child() {
}

public Child(Long id, String name) {
this.id = id;
this.name = name;
}

public Long getId() {
return id;
}

public void setId(Long id) {
this.id = id;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}

}
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