test_shutil.py 文件源码

def test_copymode_follow_symlinks(self):
        tmp_dir = self.mkdtemp()
        src = os.path.join(tmp_dir, 'foo')
        dst = os.path.join(tmp_dir, 'bar')
        src_link = os.path.join(tmp_dir, 'baz')
        dst_link = os.path.join(tmp_dir, 'quux')
        write_file(src, 'foo')
        write_file(dst, 'foo')
        os.symlink(src, src_link)
        os.symlink(dst, dst_link)
        os.chmod(src, stat.S_IRWXU|stat.S_IRWXG)
        # file to file
        os.chmod(dst, stat.S_IRWXO)
        self.assertNotEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
        shutil.copymode(src, dst)
        self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
        # On Windows, os.chmod does not follow symlinks (issue #15411)
        if os.name != 'nt':
            # follow src link
            os.chmod(dst, stat.S_IRWXO)
            shutil.copymode(src_link, dst)
            self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
            # follow dst link
            os.chmod(dst, stat.S_IRWXO)
            shutil.copymode(src, dst_link)
            self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
            # follow both links
            os.chmod(dst, stat.S_IRWXO)
            shutil.copymode(src_link, dst_link)
            self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)