test_shutil.py 文件源码

def test_copyxattr_symlinks(self):
        # On Linux, it's only possible to access non-user xattr for symlinks;
        # which in turn require root privileges. This test should be expanded
        # as soon as other platforms gain support for extended attributes.
        tmp_dir = self.mkdtemp()
        src = os.path.join(tmp_dir, 'foo')
        src_link = os.path.join(tmp_dir, 'baz')
        write_file(src, 'foo')
        os.symlink(src, src_link)
        os.setxattr(src, 'trusted.foo', b'42')
        os.setxattr(src_link, 'trusted.foo', b'43', follow_symlinks=False)
        dst = os.path.join(tmp_dir, 'bar')
        dst_link = os.path.join(tmp_dir, 'qux')
        write_file(dst, 'bar')
        os.symlink(dst, dst_link)
        shutil._copyxattr(src_link, dst_link, follow_symlinks=False)
        self.assertEqual(os.getxattr(dst_link, 'trusted.foo', follow_symlinks=False), b'43')
        self.assertRaises(OSError, os.getxattr, dst, 'trusted.foo')
        shutil._copyxattr(src_link, dst, follow_symlinks=False)
        self.assertEqual(os.getxattr(dst, 'trusted.foo'), b'43')