def test_normalize_dates_yyy_mm_dd_and_negative_integer():
# Arrange
start_date = "2019-03-18"
end_date = -1
# Act
start_date, end_date = core.normalize_dates(start_date, end_date)
# Assert
assert start_date == "2019-03-18"
assert end_date == -1
def test_normalize_dates_yyy_mm():
# Arrange
start_date = "2019-03"
end_date = "2019-03"
# Act
start_date, end_date = core.normalize_dates(start_date, end_date)
# Assert
assert start_date == "2019-03-01"
assert end_date == "2019-03-31"