HHH-13104 - Added test case.

hibernate-core/src/test/java/org/hibernate/test/idgen/identity/IdentityInsertSoleColumnTest.java

@@ -0,0 +1,79 @@
+/*
+ * 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.test.idgen.identity;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+import org.hibernate.dialect.AbstractHANADialect;
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+import org.junit.Test;
+
+import org.hibernate.testing.DialectChecks;
+import org.hibernate.testing.RequiresDialectFeature;
+import org.hibernate.testing.SkipForDialect;
+import org.hibernate.testing.TestForIssue;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * The purpose of this test is to insure that when an entity that contains a single column
+ * which also happens to be an identity-generated identifier, the generated insert SQL is
+ * correct for the dialect.
+ *
+ * We found through research that SAP Hana doesn't support an empty values-list clause, the
+ * omission of the values-list clause, or any default value in the values-list clause for
+ * the identifier column; therefore we'll skip this test for that platform.
+ *
+ * @author Chris Cranford
+ */
+@TestForIssue(jiraKey = "HHH-13104")
+@RequiresDialectFeature(DialectChecks.SupportsIdentityColumns.class)
+@SkipForDialect(value=AbstractHANADialect.class, comment="SAP HANA requires at least value in insert value-list clause.")
+public class IdentityInsertSoleColumnTest extends BaseEntityManagerFunctionalTestCase {
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] { Animal.class };
+	}
+
+	@Test
+	public void testEntityInsertWithSingleIdentityAttributeColumn() {
+		// insert the entity
+		final Integer entityId = doInJPA( this::entityManagerFactory, entityManager -> {
+			final Animal animal = new Animal();
+			entityManager.persist( animal );
+			return animal.getId();
+		} );
+
+		// make sure the identifier was generated
+		assertNotNull( entityId );
+
+		// verify the entity can be fetched
+		doInJPA( this::entityManagerFactory, entityManager -> {
+			final Animal animal = entityManager.find( Animal.class, entityId );
+			assertNotNull( animal );
+		} );
+	}
+
+	@Entity(name = "Animal")
+	public static class Animal {
+		@Id
+		@GeneratedValue(strategy = GenerationType.IDENTITY)
+		private Integer id;
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+	}
+}