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bpo-37935: Added tests for os.walk(), glob.iglob() and Path.glob() (GH-15956)

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Test that they do not keep too many file descriptors open for the host OS in a reasonable test scenario.

See [bpo-37935](https://bugs.python.org/issue37935).
This commit is contained in:
Serhiy Storchaka 2019-09-12 15:54:48 +03:00 • committed by Gregory P. Smith
parent 5a4f82f457
commit f9dc2ad890
3 changed files with 59 additions and 0 deletions
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17
Lib/test/test_pathlib.py
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@ -1562,6 +1562,23 @@ class _BasePathTest(object):
}
self.assertEqual(given, {p / x for x in expect})
def test_glob_many_open_files(self):
depth = 30
P = self.cls
base = P(BASE) / 'deep'
p = P(base, *(['d']*depth))
p.mkdir(parents=True)
pattern = '/'.join(['*'] * depth)
iters = [base.glob(pattern) for j in range(100)]
for it in iters:
self.assertEqual(next(it), p)
iters = [base.rglob('d') for j in range(100)]
p = base
for i in range(depth):
p = p / 'd'
for it in iters:
self.assertEqual(next(it), p)
def test_glob_dotdot(self):
# ".." is not special in globs.
P = self.cls