HHH-15097 Add test for boot error when using AttributeConverter for UUID

hibernate-core/src/test/java/org/hibernate/test/jpa/convert/UUIDConverterTest.java

@@ -0,0 +1,104 @@
+/*
+ * 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.jpa.convert;
+
+import java.util.UUID;
+import javax.persistence.AttributeConverter;
+import javax.persistence.Convert;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
+
+import org.hibernate.testing.TestForIssue;
+import org.junit.Test;
+
+import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
+import static org.junit.Assert.assertEquals;
+
+/**
+ * @author Christian Beikov
+ */
+public class UUIDConverterTest extends BaseEntityManagerFunctionalTestCase {
+
+	private UUID uuid = UUID.randomUUID();
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] { TestEntity.class };
+	}
+
+	@Test
+	@TestForIssue(jiraKey = "HHH-15097")
+	public void testSqlTypeDescriptorForConverted() {
+		// persist the record.
+		Integer rowId = doInJPA( this::entityManagerFactory, entityManager -> {
+			TestEntity e = new TestEntity();
+			e.setSomeValue( new SomeValue( uuid = UUID.randomUUID() ) );
+			entityManager.persist( e );
+			return e.getId();
+		} );
+
+		// retrieve the record and verify values.
+		doInJPA( this::entityManagerFactory, entityManager -> {
+			final TestEntity e = entityManager.find( TestEntity.class, rowId );
+			assertEquals( uuid, e.getSomeValue().uuid );
+		} );
+	}
+
+	@Entity(name = "TestEntity")
+	public static class TestEntity {
+		@Id
+		@GeneratedValue
+		private Integer id;
+
+		@Convert(converter = UUIDConverter.class)
+		private SomeValue someValue;
+
+		public Integer getId() {
+			return id;
+		}
+
+		public void setId(Integer id) {
+			this.id = id;
+		}
+
+		public SomeValue getSomeValue() {
+			return someValue;
+		}
+
+		public void setSomeValue(SomeValue someValue) {
+			this.someValue = someValue;
+		}
+
+	}
+
+	public static class UUIDConverter implements AttributeConverter<SomeValue, UUID> {
+		@Override
+		public UUID convertToDatabaseColumn(SomeValue attribute) {
+			return attribute == null ? null : attribute.uuid;
+		}
+
+		@Override
+		public SomeValue convertToEntityAttribute(UUID dbData) {
+			return dbData == null ? null : new SomeValue( dbData );
+		}
+	}
+
+	public static class SomeValue {
+		private final UUID uuid;
+
+		public SomeValue(UUID uuid) {
+			this.uuid = uuid;
+		}
+
+		public UUID getUuid() {
+			return uuid;
+		}
+	}
+}