HHH-18117 Test case

hibernate-core/src/test/java/org/hibernate/orm/test/query/hql/CharacterColumnTest.java

@@ -0,0 +1,72 @@
+package org.hibernate.orm.test.query.hql;
+
+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;
+
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Column;
+import jakarta.persistence.Convert;
+import jakarta.persistence.Converter;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@SessionFactory
+@DomainModel(annotatedClasses = { CharacterColumnTest.MyEntity.class })
+public class CharacterColumnTest {
+
+	@Test
+	public void queryTest(SessionFactoryScope scope) {
+		scope.inSession(
+				session -> {
+					final var list = session.createQuery( "from MyEntity where status='A'", MyEntity.class )
+							.getResultList();
+					assertTrue( list.isEmpty() );
+				}
+		);
+	}
+
+	public static enum Status {
+		OK( 'O' ),
+		ERROR( 'E' );
+
+		private final char value;
+
+		Status(char value) {
+			this.value = value;
+		}
+
+		public char value() {
+			return value;
+		}
+	}
+
+	@Converter(autoApply = true)
+	public static class StatusAttributeConverter implements AttributeConverter<Status, Character> {
+
+		@Override
+		public Character convertToDatabaseColumn(final Status attribute) {
+			return attribute == null ? null : attribute.value();
+		}
+
+		@Override
+		public Status convertToEntityAttribute(final Character dbData) {
+			return dbData == null ? null : dbData == 'O' ? Status.OK : Status.ERROR;
+		}
+	}
+
+	@Entity(name = "MyEntity")
+	public static class MyEntity {
+		@Id
+		@GeneratedValue
+		public Long id;
+
+		@Column(length = 1)
+		@Convert(converter = StatusAttributeConverter.class)
+		public Status status;
+	}
+}