cpython/Lib/test/test_zipfile/_path/test_complexity.py

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import unittest
import string
import zipfile
from ._functools import compose
from ._itertools import consume
from ._support import import_or_skip
big_o = import_or_skip('big_o')
class TestComplexity(unittest.TestCase):
def test_implied_dirs_performance(self):
best, others = big_o.big_o(
compose(consume, zipfile.CompleteDirs._implied_dirs),
lambda size: [
'/'.join(string.ascii_lowercase + str(n)) for n in range(size)
],
max_n=1000,
min_n=1,
)
assert best <= big_o.complexities.Linear