def test_every_monday():
cal = Calendar(date(2017, 10, 15))
days = cal.weekday('Monday', 4)
assert days == [
date(2017, 10, 16),
date(2017, 10, 23),
date(2017, 10, 30),
date(2017, 11, 6)
]
def test_last_friday():
cal = Calendar(date(2017, 10, 15))
days = cal.last_weekday('Friday', 4)
assert days == [
date(2017, 10, 27),
date(2017, 11, 24),
date(2017, 12, 29),
date(2018, 1, 26)
]
def test_third_thursday():
cal = Calendar(date(2017, 10, 15))
days = cal.nth_weekday(3, 'Thursday', 4)
assert days == [
date(2017, 10, 19),
date(2017, 11, 16),
date(2017, 12, 21),
date(2018, 1, 18)
]