OSIS-4995 add tests on is_year_lower method
OSIS-4995 add tests on is_year_lower method

uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain