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"""Tests for distutils.file_util.""" import unittest import os import errno from unittest.mock import patch from distutils.file_util import move_file, copy_file from distutils import log from distutils.tests import support from distutils.errors import DistutilsFileError from test.support import run_unittest, unlink class FileUtilTestCase(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(FileUtilTestCase, self).setUp() self._logs = [] self.old_log = log.info log.info = self._log 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') def tearDown(self): log.info = self.old_log super(FileUtilTestCase, self).tearDown() def test_move_file_verbosity(self): f = open(self.source, 'w') try: f.write('some content') finally: f.close() move_file(self.source, self.target, verbose=0) wanted = [] self.assertEqual(self._logs, wanted) # back to original state move_file(self.target, self.source, verbose=0) move_file(self.source, self.target, verbose=1) wanted = ['moving %s -> %s' % (self.source, self.target)] self.assertEqual(self._logs, wanted) # back to original state move_file(self.target, self.source, verbose=0) self._logs = [] # now the target is a dir os.mkdir(self.target_dir) move_file(self.source, self.target_dir, verbose=1) wanted = ['moving %s -> %s' % (self.source, self.target_dir)] self.assertEqual(self._logs, wanted) def test_move_file_exception_unpacking_rename(self): # see issue 22182 with patch("os.rename", side_effect=OSError("wrong", 1)), \ self.assertRaises(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 patch("os.rename", side_effect=OSError(errno.EXDEV, "wrong")), \ patch("os.unlink", side_effect=OSError("wrong", 1)), \ self.assertRaises(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) self.assertTrue(os.path.samestat(st, st2), (st, st2)) self.assertTrue(os.path.samestat(st2, st3), (st2, st3)) with open(self.source, 'r') as f: self.assertEqual(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 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) self.assertTrue(os.path.samestat(st, st2), (st, st2)) self.assertFalse(os.path.samestat(st2, st3), (st2, st3)) for fn in (self.source, self.target): with open(fn, 'r') as f: self.assertEqual(f.read(), 'some content') def test_suite(): return unittest.makeSuite(FileUtilTestCase) if __name__ == "__main__": run_unittest(test_suite())
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