def test_dtrange():
zero = dt.datetime(1970, 1, 1)
eight = dt.datetime(1970, 1, 1, 0, 0, 8)
eight_four = dt.datetime(1970, 1, 1, 0, 0, 8) + dt.timedelta(0, 0.4)
print eight_four.microsecond
four_eight = dt.datetime(1970, 1, 1, 0, 0, 4) + dt.timedelta(0, 0.8)
neg_one = dt.timedelta(0, -1)
one_two = dt.timedelta(0, 1.2)
with pytest.raises(TypeError):
extra.dtrange()
with pytest.raises(TypeError):
extra.dtrange(0, 8, 2, 4)
with pytest.raises(AttributeError):
extra.dtrange('a')
with pytest.raises(TypeError):
extra.frange(None)
assert list(extra.dtrange(zero)) == []
assert list(extra.dtrange(eight, zero)) == []
assert list(extra.dtrange(zero, eight, neg_one)) == []
assert list(extra.dtrange(eight, zero, neg_one)) == [8, 7, 6, 5, 4, 3, 2, 1]
assert list(extra.dtrange(eight_four)) == [0, 1, 2, 3, 4, 5, 6, 7, 8]
assert list(extra.dtrange(four_eight, eight_four)) == [4.8, 5.8, 6.8, 7.8]
assert list(extra.dtrange(four_eight, eight_four, one_two)) == [4.8, 6.0, 7.2]
def test_dtrange(args, expected):
assert list(extra.dtrange(*args)) == expected
