HHH-18012 Add test for issue

hibernate-core/src/test/java/org/hibernate/orm/test/annotations/GenericConverterAutoApplyTest.java

@@ -0,0 +1,97 @@
+package org.hibernate.orm.test.annotations;
+
+import jakarta.persistence.AttributeConverter;
+import jakarta.persistence.Converter;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+import jakarta.persistence.metamodel.EntityType;
+import jakarta.persistence.metamodel.SingularAttribute;
+import org.hibernate.orm.test.jpa.BaseEntityManagerFunctionalTestCase;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.type.BasicType;
+import org.junit.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Yanming Zhou
+ */
+@JiraKey("HHH-18012")
+public class GenericConverterAutoApplyTest extends BaseEntityManagerFunctionalTestCase {
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[]{IntegerArrayConverter.class, IntegerListConverter.class, TestEntity.class};
+	}
+
+	@Test
+	public void genericArrayIsAutoApplied() {
+		assertAttributeIsMappingToString("integerArray");
+	}
+
+	@Test
+	public void genericListIsAutoApplied() {
+		assertAttributeIsMappingToString("integerList");
+	}
+
+	private void assertAttributeIsMappingToString(String name) {
+		EntityType<?> entityType = getOrCreateEntityManager().getMetamodel().entity(TestEntity.class);
+		assertThat(entityType.getAttribute(name)).isInstanceOfSatisfying(SingularAttribute.class,
+				sa -> assertThat(sa.getType()).isInstanceOfSatisfying(BasicType.class,
+						bt -> assertThat(bt.getJdbcJavaType().getJavaType()).isEqualTo(String.class)
+				));
+	}
+
+	static abstract class AbstractArrayConverter<T> implements AttributeConverter<T[], String> {
+
+		@Override
+		public String convertToDatabaseColumn(T[] array) {
+			return null;
+		}
+
+		@Override
+		public T[] convertToEntityAttribute(String string) {
+			return null;
+		}
+	}
+
+	@Converter(autoApply = true)
+	static class IntegerArrayConverter extends AbstractArrayConverter<Integer> {
+
+	}
+
+	static abstract class AbstractListConverter<T> implements AttributeConverter<List<T>, String> {
+
+		@Override
+		public String convertToDatabaseColumn(List<T> array) {
+			return null;
+		}
+
+		@Override
+		public List<T> convertToEntityAttribute(String string) {
+			return null;
+		}
+
+	}
+
+	@Converter(autoApply = true)
+	static class IntegerListConverter extends AbstractListConverter<Integer> {
+
+	}
+
+	@Entity
+	static class TestEntity {
+
+		@Id
+		@GeneratedValue
+		Long id;
+
+		Integer[] integerArray;
+
+		List<Integer> integerList;
+	}
+
+}