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"""
Test cases for the dircache module
Nick Mathewson
"""
import unittest
from test.test_support import run_unittest, TESTFN
import dircache, os, time, sys
class DircacheTests(unittest.TestCase):
def setUp(self):
self.tempdir = TESTFN+"_dir"
os.mkdir(self.tempdir)
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.assertEquals(entries, [])
# Check that cache is actually caching, not just passing through.
self.assert_(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 occured within 1 sec of the last
# time it examined a directory.
time.sleep(1)
self.writeTemp("test1")
entries = dircache.listdir(self.tempdir)
self.assertEquals(entries, ['test1'])
self.assert_(dircache.listdir(self.tempdir) is entries)
## UNSUCCESSFUL CASES
self.assertEquals(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.assertEquals(lst, ['A/', 'test2', 'test_nonexistent'])
def test_main():
run_unittest(DircacheTests)
if __name__ == "__main__":
test_main()
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