/usr/lib/python2.7/test/test_dircache.py is in libpython2.7-testsuite 2.7.11-7ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Test cases for the dircache module
Nick Mathewson
"""
import unittest
from test.test_support import run_unittest, import_module
dircache = import_module('dircache', deprecated=True)
import os, time, sys, tempfile
class DircacheTests(unittest.TestCase):
def setUp(self):
self.tempdir = tempfile.mkdtemp()
def tearDown(self):
for fname in os.listdir(self.tempdir):
self.delTemp(fname)
os.rmdir(self.tempdir)
def writeTemp(self, fname):
f = open(os.path.join(self.tempdir, fname), 'w')
f.close()
def mkdirTemp(self, fname):
os.mkdir(os.path.join(self.tempdir, fname))
def delTemp(self, fname):
fname = os.path.join(self.tempdir, fname)
if os.path.isdir(fname):
os.rmdir(fname)
else:
os.unlink(fname)
def test_listdir(self):
## SUCCESSFUL CASES
entries = dircache.listdir(self.tempdir)
self.assertEqual(entries, [])
# Check that cache is actually caching, not just passing through.
self.assertTrue(dircache.listdir(self.tempdir) is entries)
# Directories aren't "files" on Windows, and directory mtime has
# nothing to do with when files under a directory get created.
# That is, this test can't possibly work under Windows -- dircache
# is only good for capturing a one-shot snapshot there.
if sys.platform[:3] not in ('win', 'os2'):
# Sadly, dircache has the same granularity as stat.mtime, and so
# can't notice any changes that occurred within 1 sec of the last
# time it examined a directory.
time.sleep(1)
self.writeTemp("test1")
entries = dircache.listdir(self.tempdir)
self.assertEqual(entries, ['test1'])
self.assertTrue(dircache.listdir(self.tempdir) is entries)
## UNSUCCESSFUL CASES
self.assertRaises(OSError, dircache.listdir, self.tempdir+"_nonexistent")
def test_annotate(self):
self.writeTemp("test2")
self.mkdirTemp("A")
lst = ['A', 'test2', 'test_nonexistent']
dircache.annotate(self.tempdir, lst)
self.assertEqual(lst, ['A/', 'test2', 'test_nonexistent'])
def test_main():
try:
run_unittest(DircacheTests)
finally:
dircache.reset()
if __name__ == "__main__":
test_main()
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