Various code cleanup

Author: sebersole

hibernate-core/src/test/java/org/hibernate/orm/test/aggregation/UuidAggregationTest.java

@@ -0,0 +1,27 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.id.uuid;
+
+import org.hibernate.testing.orm.domain.gambit.EntityOfBasics;
+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.Test;
+
+import java.util.UUID;
+
+@SuppressWarnings("JUnitMalformedDeclaration")
+@DomainModel(annotatedClasses = EntityOfBasics.class)
+@SessionFactory
+public class UuidAggregationTest {
+	@Test
+	@JiraKey(value = "HHH-15495")
+	public void testMaxUuid(SessionFactoryScope scope) {
+		scope.inTransaction( (session) -> {
+			session.createSelectionQuery( "select max(theUuid) from EntityOfBasics", UUID.class ).getSingleResult();
+		} );
+	}
+}