HHH-16885 Add test for issue

Author: dreab8

hibernate-core/src/test/java/org/hibernate/orm/test/entitygraph/EntityGraphAttributeNodesTest.java

@@ -0,0 +1,121 @@
+package org.hibernate.orm.test.entitygraph;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.hibernate.annotations.OnDelete;
+import org.hibernate.annotations.OnDeleteAction;
+
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EntityGraph;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+@Jpa(
+		annotatedClasses = {
+				EntityGraphAttributeNodesTest.Human.class,
+				EntityGraphAttributeNodesTest.House.class,
+				EntityGraphAttributeNodesTest.Address.class,
+		}
+)
+@JiraKey("HHH-16885")
+public class EntityGraphAttributeNodesTest {
+
+	private final static Integer HUMAN_ID = 1;
+
+	@BeforeAll
+	public void setUp(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					Human human = new Human( HUMAN_ID );
+					entityManager.persist( human );
+				}
+		);
+	}
+
+	@Test
+	public void testIt(EntityManagerFactoryScope scope) {
+
+		scope.inEntityManager(
+				entityManager -> {
+					EntityGraph<?> entityGraph = entityManager.createEntityGraph( Human.class );
+					entityGraph.addSubgraph( "houses" ).addAttributeNodes( "address" );
+
+					List results = entityManager.createQuery( "SELECT h FROM Human h WHERE h.id = ?1" )
+							.setParameter( 1, HUMAN_ID )
+							.setHint( "javax.persistence.fetchgraph", entityGraph )
+							.getResultList();
+
+					assertThat( results.size() ).isEqualTo( 1 );
+					assertThat( results.get( 0 ) ).isNotNull();
+				}
+		);
+	}
+
+	@Entity(name = "Human")
+	public static class Human {
+		@Id
+		private Integer id;
+
+		private String name;
+
+		@OneToMany(mappedBy = "human", cascade = CascadeType.ALL)
+		@OnDelete(action = OnDeleteAction.CASCADE)
+		private Collection<House> houses;
+
+		public Human() {
+		}
+
+		public Human(Integer id) {
+			this.id = id;
+			this.houses = new ArrayList<>();
+		}
+
+		public Human(Integer id, String name, Collection<House> houses) {
+			this.id = id;
+			this.name = name;
+			this.houses = houses;
+		}
+	}
+
+	@Entity(name = "House")
+	public static class House {
+		@Id
+		@ManyToOne(fetch = FetchType.LAZY)
+		@JoinColumn(name = "human_fk", nullable = false, updatable = false)
+		private Human human;
+
+		@Id
+		@ManyToOne(fetch = FetchType.LAZY)
+		@JoinColumn(name = "address_fk", nullable = false, updatable = false)
+		private Address address;
+
+		private String name;
+	}
+
+	@Entity(name = "Address")
+	public static class Address {
+
+		@Id
+		@GeneratedValue
+		private BigInteger id;
+
+		private String street;
+
+	}
+}