"""Tests for distutils.file_util."""
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import errno
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import os
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import unittest.mock as mock
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from distutils.errors import DistutilsFileError
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from distutils.file_util import copy_file, move_file
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import jaraco.path
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import pytest
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@pytest.fixture(autouse=True)
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def stuff(request, tmp_path):
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self = request.instance
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self.source = tmp_path / 'f1'
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self.target = tmp_path / 'f2'
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self.target_dir = tmp_path / 'd1'
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class TestFileUtil:
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def test_move_file_verbosity(self, caplog):
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jaraco.path.build({self.source: 'some content'})
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move_file(self.source, self.target, verbose=False)
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assert not caplog.messages
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# back to original state
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move_file(self.target, self.source, verbose=False)
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move_file(self.source, self.target, verbose=True)
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wanted = [f'moving {self.source} -> {self.target}']
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assert caplog.messages == wanted
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# back to original state
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move_file(self.target, self.source, verbose=False)
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caplog.clear()
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# now the target is a dir
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os.mkdir(self.target_dir)
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move_file(self.source, self.target_dir, verbose=True)
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wanted = [f'moving {self.source} -> {self.target_dir}']
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assert caplog.messages == wanted
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def test_move_file_exception_unpacking_rename(self):
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# see issue 22182
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with (
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mock.patch("os.rename", side_effect=OSError("wrong", 1)),
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pytest.raises(DistutilsFileError),
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):
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jaraco.path.build({self.source: 'spam eggs'})
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move_file(self.source, self.target, verbose=False)
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def test_move_file_exception_unpacking_unlink(self):
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# see issue 22182
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with (
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mock.patch("os.rename", side_effect=OSError(errno.EXDEV, "wrong")),
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mock.patch("os.unlink", side_effect=OSError("wrong", 1)),
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pytest.raises(DistutilsFileError),
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):
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jaraco.path.build({self.source: 'spam eggs'})
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move_file(self.source, self.target, verbose=False)
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def test_copy_file_hard_link(self):
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jaraco.path.build({self.source: 'some content'})
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# Check first that copy_file() will not fall back on copying the file
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# instead of creating the hard link.
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try:
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os.link(self.source, self.target)
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except OSError as e:
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self.skipTest(f'os.link: {e}')
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else:
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self.target.unlink()
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st = os.stat(self.source)
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copy_file(self.source, self.target, link='hard')
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st2 = os.stat(self.source)
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st3 = os.stat(self.target)
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assert os.path.samestat(st, st2), (st, st2)
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assert os.path.samestat(st2, st3), (st2, st3)
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assert self.source.read_text(encoding='utf-8') == 'some content'
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def test_copy_file_hard_link_failure(self):
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# If hard linking fails, copy_file() falls back on copying file
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# (some special filesystems don't support hard linking even under
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# Unix, see issue #8876).
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jaraco.path.build({self.source: 'some content'})
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st = os.stat(self.source)
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with mock.patch("os.link", side_effect=OSError(0, "linking unsupported")):
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copy_file(self.source, self.target, link='hard')
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st2 = os.stat(self.source)
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st3 = os.stat(self.target)
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assert os.path.samestat(st, st2), (st, st2)
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assert not os.path.samestat(st2, st3), (st2, st3)
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for fn in (self.source, self.target):
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assert fn.read_text(encoding='utf-8') == 'some content'
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