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"""Tests for distutils.file_util."""
import errno
import os
import unittest.mock as mock
from distutils.errors import DistutilsFileError
from distutils.file_util import copy_file, move_file
import jaraco.path
import pytest
@pytest.fixture(autouse=True)
def stuff(request, tmp_path):
self = request.instance
self.source = tmp_path / 'f1'
self.target = tmp_path / 'f2'
self.target_dir = tmp_path / 'd1'
class TestFileUtil:
def test_move_file_verbosity(self, caplog):
jaraco.path.build({self.source: 'some content'})
move_file(self.source, self.target, verbose=False)
assert not caplog.messages
# back to original state
move_file(self.target, self.source, verbose=False)
move_file(self.source, self.target, verbose=True)
wanted = [f'moving {self.source} -> {self.target}']
assert caplog.messages == wanted
# back to original state
move_file(self.target, self.source, verbose=False)
caplog.clear()
# now the target is a dir
os.mkdir(self.target_dir)
move_file(self.source, self.target_dir, verbose=True)
wanted = [f'moving {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),
):
jaraco.path.build({self.source: 'spam eggs'})
move_file(self.source, self.target, verbose=False)
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),
):
jaraco.path.build({self.source: 'spam eggs'})
move_file(self.source, self.target, verbose=False)
def test_copy_file_hard_link(self):
jaraco.path.build({self.source: '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(f'os.link: {e}')
else:
self.target.unlink()
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)
assert self.source.read_text(encoding='utf-8') == '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).
jaraco.path.build({self.source: '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):
assert fn.read_text(encoding='utf-8') == 'some content'
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