test for @NamedNativeQuery with result set mapping

Signed-off-by: Gavin King <gavin@hibernate.org>

hibernate-core/src/test/java/org/hibernate/orm/test/jpa/query/NamedNativeQueryWithResultMappingTest.java

@@ -0,0 +1,51 @@
+package org.hibernate.orm.test.jpa.query;
+
+import jakarta.persistence.ColumnResult;
+import jakarta.persistence.ConstructorResult;
+import jakarta.persistence.Entity;
+import jakarta.persistence.EntityResult;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.NamedNativeQuery;
+import jakarta.persistence.Table;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+@SessionFactory
+@DomainModel(annotatedClasses = NamedNativeQueryWithResultMappingTest.Mapped.class)
+public class NamedNativeQueryWithResultMappingTest {
+	@Test void test(SessionFactoryScope scope) {
+		Mapped mapped = new Mapped();
+		mapped.name = "Gavin";
+		scope.inTransaction(s -> s.persist(mapped));
+		scope.inSession(s -> {
+			s.createNamedSelectionQuery("mapped-native-query").getSingleResult();
+			s.createNamedSelectionQuery("unmapped-native-query").getSingleResult();
+		});
+	}
+	@NamedNativeQuery(
+			name = "mapped-native-query",
+			query = "select id, name, 1 as one, 'hello' as hello from mapped",
+			entities = @EntityResult(entityClass = Mapped.class),
+			columns = {@ColumnResult(name = "one", type = Integer.class),
+					@ColumnResult(name = "hello", type = String.class)}
+	)
+	@NamedNativeQuery(
+			name = "unmapped-native-query",
+			query = "select id, name, 1 as one from mapped",
+			classes = @ConstructorResult(targetClass = Unmapped.class,
+					columns = {@ColumnResult(name = "name"),
+							@ColumnResult(name = "id"),
+							@ColumnResult(name = "one")})
+	)
+	@Entity(name = "Mapped")
+	@Table(name = "mapped")
+	static class Mapped {
+		@Id @GeneratedValue
+		Long id;
+		String name;
+	}
+	record Unmapped(String name, long id, int one) {}
+}