def test_add_holiday_returns_negative_one_on_exception_thrown(connection):
connection.commit.side_effect = OperationalError()
holiday = Holiday(connection)
actual = holiday.add_holiday(datetime.now())
assert actual is -1
def test_add_holiday_returns_row_id(connection):
expected = randint(1, 999)
connection.get_last_row_id.return_value = expected
holiday = Holiday(connection)
actual = holiday.add_holiday(datetime.now())
connection.execute.assert_called_once()
connection.commit.assert_called_once()
connection.get_last_row_id.assert_called_once()
assert actual is expected