example-code-2e/24-class-metaprog/hours/hours_test.py
2021-09-10 12:34:39 -03:00

72 lines
1.7 KiB
Python

# content of test_expectation.py
from math import isclose
import pytest
from hours import normalize, H
HOURS_TO_HMS = [
[1, (1, 0, 0.0)],
[1.5, (1, 30, 0.0)],
[1.1, (1, 6, 0.0)],
[1.9, (1, 54, 0.0)],
[1.01, (1, 0, 36.0)],
[1.09, (1, 5, 24.0)],
[2 + 1/60, (2, 1, 0.0)],
[3 + 1/3600, (3, 0, 1.0)],
[1.251, (1, 15, 3.6)],
]
@pytest.mark.parametrize('hours, expected', HOURS_TO_HMS)
def test_normalize(hours, expected):
h, m, s = expected
got_h, got_m, got_s = normalize(hours * 3600)
assert (h, m) == (got_h, got_m)
assert isclose(s, got_s, abs_tol=1e-12)
got_hours = got_h + got_m / 60 + got_s / 3600
assert isclose(hours, got_hours)
@pytest.mark.parametrize('h, expected', [
(H[1], '1:00'),
(H[1:0], '1:00'),
(H[1:3], '1:03'),
(H[1:59], '1:59'),
(H[1:0:0], '1:00'),
(H[1:2:3], '1:02:03'),
(H[1:2:3.4], '1:02:03.4'),
(H[1:2:0.1], '1:02:00.1'),
(H[1:2:0.01], '1:02:00.01'),
(H[1:2:0.001], '1:02:00.001'),
(H[1:2:0.0001], '1:02'),
])
def test_repr(h, expected):
assert expected == repr(h), f'seconds: {h.s}'
@pytest.mark.parametrize('expected, hms', HOURS_TO_HMS)
def test_float(expected, hms):
got = float(H[slice(*hms)])
assert isclose(expected, got)
@pytest.mark.parametrize('hms, units', [
((0, 60, 0), 'minutes'),
((0, 0, 60), 'seconds'),
((0, 60, 60), 'minutes'),
])
def test_class_getitem_errors(hms, units):
with pytest.raises(ValueError) as excinfo:
H[slice(*hms)]
assert units in str(excinfo.value)
@pytest.mark.parametrize('hms1, hms2, expected', [
(H[0:30], H[0:15], H[0:45]),
(H[0:30], H[0:30], H[1:00]),
(H[0:59:59], H[0:00:1], H[1:00]),
])
def test_add(hms1, hms2, expected):
assert expected == hms1 + hms2