def test_get_next_day_from_no_running_days(self):
school_year = SchoolYearFactory(days_of_week=0)
monday = datetime.date(2020, 1, 20)
assert school_year.get_next_day_from(monday) == monday
def test_get_next_day_from(self):
school_year = SchoolYearFactory(days_of_week=SchoolYear.MONDAY)
monday = datetime.date(2020, 1, 20)
next_monday = datetime.date(2020, 1, 27)
assert school_year.get_next_day_from(monday) == next_monday
