bpo-37935: Added tests for os.walk(), glob.iglob() and Path.glob() (GH-15956)
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).
diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index f3b385f..f3304f0 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -1562,6 +1562,23 @@
}
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