HHH-15391 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/entitygraph/named/basic/LoadFetchGraphWithEagerSelfReferencingEagerToOneTest.java

@@ -0,0 +1,159 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.orm.test.entitygraph.named.basic;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.hibernate.cfg.AvailableSettings;
+import org.hibernate.jpa.SpecHints;
+
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.EntityManagerFactoryScope;
+import org.hibernate.testing.orm.junit.Jpa;
+import org.hibernate.testing.orm.junit.Setting;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.NamedAttributeNode;
+import jakarta.persistence.NamedEntityGraph;
+import jakarta.persistence.NamedEntityGraphs;
+import jakarta.persistence.TypedQuery;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+
+@Jpa(
+		annotatedClasses = LoadFetchGraphWithEagerSelfReferencingEagerToOneTest.Sample.class,
+		properties = @Setting(name = AvailableSettings.MAX_FETCH_DEPTH, value = "")
+)
+@TestForIssue(jiraKey = "HHH-15391")
+public class LoadFetchGraphWithEagerSelfReferencingEagerToOneTest {
+
+	@BeforeEach
+	public void setUp(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					Sample first = new Sample( 1, "first" );
+					Sample second = new Sample( 2, "second" );
+					Sample third = new Sample( 3, "third" );
+					first.setParent( second );
+					second.setParent( third );
+
+					entityManager.persist( second );
+					entityManager.persist( first );
+					entityManager.persist( third );
+				}
+		);
+	}
+
+	@AfterEach
+	public void tearDown(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager ->
+						entityManager.createQuery( "delete from Sample" ).executeUpdate()
+		);
+	}
+
+	@Test
+	public void testQuery2(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+
+					TypedQuery<Sample> query = entityManager.createQuery(
+							"select s from Sample s where s.id = :id",
+							Sample.class
+					).setParameter( "id", 1 );
+					query.setHint( SpecHints.HINT_SPEC_LOAD_GRAPH, entityManager.getEntityGraph( "sample.name" ) );
+					List<Sample> results = query.getResultList();
+					assertThat( results.size(), is( 1 ) );
+				}
+		);
+	}
+
+
+	@Test
+	public void testQuery(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+
+					TypedQuery<Sample> query = entityManager.createQuery(
+							"select s from Sample s",
+							Sample.class
+					);
+					query.setHint( SpecHints.HINT_SPEC_LOAD_GRAPH, entityManager.getEntityGraph( "sample.name" ) );
+					List<Sample> results = query.getResultList();
+					assertThat( results.size(), is( 3 ) );
+				}
+		);
+	}
+
+	@Test
+	public void testFind(EntityManagerFactoryScope scope) {
+		scope.inTransaction(
+				entityManager -> {
+					Sample sample = entityManager.find(
+							Sample.class,
+							1,
+							Collections.singletonMap(
+									SpecHints.HINT_SPEC_LOAD_GRAPH,
+									entityManager.getEntityGraph( "sample.name" )
+							)
+					);
+
+					assertNotNull( sample );
+				}
+		);
+	}
+
+	@Entity(name = "Sample")
+	@NamedEntityGraphs({
+			@NamedEntityGraph(
+					name = "sample.name",
+					attributeNodes = { @NamedAttributeNode("name") })
+	})
+	public static class Sample {
+
+		@Id
+		private Integer id;
+
+		@ManyToOne
+		Sample parent;
+
+		String name;
+
+		public Sample() {
+		}
+
+		public Sample(Integer id, String name) {
+			this.id = id;
+			this.name = name;
+		}
+
+		public Sample getParent() {
+			return parent;
+		}
+
+		public void setParent(Sample parent) {
+			this.parent = parent;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public void setName(String name) {
+			this.name = name;
+		}
+	}
+}