@Test
    void verifyOperation() {
        val converter = new MultivaluedMapToJsonAttributeConverter();
        val map = new HashMap<String, List<Object>>();
        map.put("attribute1", CollectionUtils.wrapList("1", "2"));
        val results = converter.convertToDatabaseColumn(map);
        assertFalse(results.isEmpty());
        val entity = converter.convertToEntityAttribute(results);
        assertEquals(entity, map);
    }
This is {@link MultivaluedMapToJsonAttributeConverterTests}.

@author Misagh Moayyed
@since 7.0.0
core/cas-server-core-util-api/src/test/java/org/apereo/cas/util/jpa/MultivaluedMapToJsonAttributeConverterTests.java