HHH-18708 Added two new tests to existing class

Author: cigaly

hibernate-core/src/test/java/org/hibernate/orm/test/hql/EnumTest.java

@@ -4,8 +4,6 @@
  */
 package org.hibernate.orm.test.hql;
 
-import java.util.List;
-
 import org.hibernate.testing.orm.domain.gambit.EntityOfBasics;
 import org.hibernate.testing.orm.junit.DomainModel;
 import org.hibernate.testing.orm.junit.Jira;
@@ -14,6 +12,8 @@
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
+import java.util.List;
+
 import static org.assertj.core.api.Assertions.assertThat;
 
 @DomainModel(annotatedClasses = {
@@ -22,6 +22,7 @@
 })
 @SessionFactory
 @Jira("https://hibernate.atlassian.net/browse/HHH-16861")
+@Jira("https://hibernate.atlassian.net/browse/HHH-18708")
 public class EnumTest {
 
 
@@ -97,4 +98,56 @@ public void testOrdinalFunctionOnStringEnum(SessionFactoryScope scope) {
 
 	}
 
+	@Test
+	public void testStringFunctionOnStringEnum(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+
+			List<String> femaleStringFunction = session.createQuery(
+							"select string(gender) " +
+							"from EntityOfBasics e " +
+							"where e.gender = :gender",
+							String.class
+					)
+					.setParameter( "gender", EntityOfBasics.Gender.FEMALE )
+					.getResultList();
+
+			List<String> femaleWithCast = session.createQuery(
+							"select cast(e.gender as String) " +
+							"from EntityOfBasics e " +
+							"where e.gender = :gender",
+							String.class
+					)
+					.setParameter( "gender", EntityOfBasics.Gender.FEMALE )
+					.getResultList();
+
+			assertThat( femaleStringFunction ).hasSize( 1 );
+			assertThat( femaleStringFunction ).hasSameElementsAs( femaleWithCast );
+		} );
+
+	}
+
+	@Test
+	public void testStringFunctionOnOrdinalEnum(SessionFactoryScope scope) {
+		scope.inTransaction( session -> {
+			//tag::hql-string-function-example[]
+			// enum Gender {
+			//	MALE,
+			//	FEMALE,
+			//	OTHER
+			//}
+			List<String> femaleStringFromString = session.createQuery(
+							"select string(ordinalGender)" +
+							"from EntityOfBasics e " +
+							"where e.ordinalGender = :gender",
+							String.class )
+					.setParameter( "gender", EntityOfBasics.Gender.FEMALE )
+					.getResultList();
+			//	This will return List.of(1)
+			//end::hql-string-function-example[]
+			assertThat( femaleStringFromString ).hasSize( 1 );
+			assertThat( femaleStringFromString ).hasSameElementsAs( List.of( "FEMALE" ) );
+		} );
+
+	}
+
 }