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"""Tests for distutils.dir_util."""
import unittest
import os
import stat
import sys
import contextlib
from distutils import dir_util, errors
from distutils.dir_util import (mkpath, remove_tree, create_tree, copy_tree,
ensure_relative)
from distutils import log
from distutils.tests import support
from test.support import run_unittest
@contextlib.context_manager
def patch_obj(obj, attr, replacement):
"""
A poor man's mock.patch.object
"""
orig = getattr(obj, attr)
try:
setattr(obj, attr, replacement)
yield
finally:
setattr(obj, attr, orig)
class DirUtilTestCase(support.TempdirManager, unittest.TestCase):
def _log(self, msg, *args):
if len(args) > 0:
self._logs.append(msg % args)
else:
self._logs.append(msg)
def setUp(self):
super(DirUtilTestCase, self).setUp()
self._logs = []
tmp_dir = self.mkdtemp()
self.root_target = os.path.join(tmp_dir, 'deep')
self.target = os.path.join(self.root_target, 'here')
self.target2 = os.path.join(tmp_dir, 'deep2')
self.old_log = log.info
log.info = self._log
def tearDown(self):
log.info = self.old_log
super(DirUtilTestCase, self).tearDown()
def test_mkpath_remove_tree_verbosity(self):
mkpath(self.target, verbose=0)
wanted = []
self.assertEqual(self._logs, wanted)
remove_tree(self.root_target, verbose=0)
mkpath(self.target, verbose=1)
wanted = ['creating %s' % self.root_target,
'creating %s' % self.target]
self.assertEqual(self._logs, wanted)
self._logs = []
remove_tree(self.root_target, verbose=1)
wanted = ["removing '%s' (and everything under it)" % self.root_target]
self.assertEqual(self._logs, wanted)
@unittest.skipIf(sys.platform.startswith('win'),
"This test is only appropriate for POSIX-like systems.")
def test_mkpath_with_custom_mode(self):
# Get and set the current umask value for testing mode bits.
umask = os.umask(0o002)
os.umask(umask)
mkpath(self.target, 0o700)
self.assertEqual(
stat.S_IMODE(os.stat(self.target).st_mode), 0o700 & ~umask)
mkpath(self.target2, 0o555)
self.assertEqual(
stat.S_IMODE(os.stat(self.target2).st_mode), 0o555 & ~umask)
def test_create_tree_verbosity(self):
create_tree(self.root_target, ['one', 'two', 'three'], verbose=0)
self.assertEqual(self._logs, [])
remove_tree(self.root_target, verbose=0)
wanted = ['creating %s' % self.root_target]
create_tree(self.root_target, ['one', 'two', 'three'], verbose=1)
self.assertEqual(self._logs, wanted)
remove_tree(self.root_target, verbose=0)
def test_copy_tree_verbosity(self):
mkpath(self.target, verbose=0)
copy_tree(self.target, self.target2, verbose=0)
self.assertEqual(self._logs, [])
remove_tree(self.root_target, verbose=0)
mkpath(self.target, verbose=0)
a_file = os.path.join(self.target, 'ok.txt')
with open(a_file, 'w') as f:
f.write('some content')
wanted = ['copying %s -> %s' % (a_file, self.target2)]
copy_tree(self.target, self.target2, verbose=1)
self.assertEqual(self._logs, wanted)
remove_tree(self.root_target, verbose=0)
remove_tree(self.target2, verbose=0)
def test_copy_tree_skips_nfs_temp_files(self):
mkpath(self.target, verbose=0)
a_file = os.path.join(self.target, 'ok.txt')
nfs_file = os.path.join(self.target, '.nfs123abc')
for f in a_file, nfs_file:
with open(f, 'w') as fh:
fh.write('some content')
copy_tree(self.target, self.target2)
self.assertEqual(os.listdir(self.target2), ['ok.txt'])
remove_tree(self.root_target, verbose=0)
remove_tree(self.target2, verbose=0)
def test_ensure_relative(self):
if os.sep == '/':
self.assertEqual(ensure_relative('/home/foo'), 'home/foo')
self.assertEqual(ensure_relative('some/path'), 'some/path')
else: # \\
self.assertEqual(ensure_relative('c:\\home\\foo'), 'c:home\\foo')
self.assertEqual(ensure_relative('home\\foo'), 'home\\foo')
def test_copy_tree_exception_in_listdir(self):
"""
An exception in listdir should raise a DistutilsFileError
"""
def new_listdir(path):
raise OSError()
# simulate a transient network error or other failure invoking listdir
with patch_obj(os, 'listdir', new_listdir):
args = 'src', None
exc = errors.DistutilsFileError
self.assertRaises(exc, dir_util.copy_tree, *args)
def test_suite():
return unittest.makeSuite(DirUtilTestCase)
if __name__ == "__main__":
run_unittest(test_suite())
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