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"""Tests for distutils.file_util."""
import os
import errno
import unittest.mock as mock
from distutils.file_util import move_file, copy_file
from distutils.tests import support
from distutils.errors import DistutilsFileError
from .py38compat import unlink
import pytest
@pytest.fixture(autouse=True)
def stuff(request, monkeypatch, distutils_managed_tempdir):
self = request.instance
tmp_dir = self.mkdtemp()
self.source = os.path.join(tmp_dir, 'f1')
self.target = os.path.join(tmp_dir, 'f2')
self.target_dir = os.path.join(tmp_dir, 'd1')
class TestFileUtil(support.TempdirManager):
def test_move_file_verbosity(self, caplog):
f = open(self.source, 'w')
try:
f.write('some content')
finally:
f.close()
move_file(self.source, self.target, verbose=0)
assert not caplog.messages
# back to original state
move_file(self.target, self.source, verbose=0)
move_file(self.source, self.target, verbose=1)
wanted = ['moving {} -> {}'.format(self.source, self.target)]
assert caplog.messages == wanted
# back to original state
move_file(self.target, self.source, verbose=0)
caplog.clear()
# now the target is a dir
os.mkdir(self.target_dir)
move_file(self.source, self.target_dir, verbose=1)
wanted = ['moving {} -> {}'.format(self.source, self.target_dir)]
assert caplog.messages == wanted
def test_move_file_exception_unpacking_rename(self):
# see issue 22182
with mock.patch("os.rename", side_effect=OSError("wrong", 1)), pytest.raises(
DistutilsFileError
):
with open(self.source, 'w') as fobj:
fobj.write('spam eggs')
move_file(self.source, self.target, verbose=0)
def test_move_file_exception_unpacking_unlink(self):
# see issue 22182
with mock.patch(
"os.rename", side_effect=OSError(errno.EXDEV, "wrong")
), mock.patch("os.unlink", side_effect=OSError("wrong", 1)), pytest.raises(
DistutilsFileError
):
with open(self.source, 'w') as fobj:
fobj.write('spam eggs')
move_file(self.source, self.target, verbose=0)
def test_copy_file_hard_link(self):
with open(self.source, 'w') as f:
f.write('some content')
# Check first that copy_file() will not fall back on copying the file
# instead of creating the hard link.
try:
os.link(self.source, self.target)
except OSError as e:
self.skipTest('os.link: %s' % e)
else:
unlink(self.target)
st = os.stat(self.source)
copy_file(self.source, self.target, link='hard')
st2 = os.stat(self.source)
st3 = os.stat(self.target)
assert os.path.samestat(st, st2), (st, st2)
assert os.path.samestat(st2, st3), (st2, st3)
with open(self.source) as f:
assert f.read() == 'some content'
def test_copy_file_hard_link_failure(self):
# If hard linking fails, copy_file() falls back on copying file
# (some special filesystems don't support hard linking even under
# Unix, see issue #8876).
with open(self.source, 'w') as f:
f.write('some content')
st = os.stat(self.source)
with mock.patch("os.link", side_effect=OSError(0, "linking unsupported")):
copy_file(self.source, self.target, link='hard')
st2 = os.stat(self.source)
st3 = os.stat(self.target)
assert os.path.samestat(st, st2), (st, st2)
assert not os.path.samestat(st2, st3), (st2, st3)
for fn in (self.source, self.target):
with open(fn) as f:
assert f.read() == 'some content'
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