#! /usr/bin/env python

# $Id: test_functions.py 7337 2012-02-03 08:16:53Z milde $
# Author: David Goodger <goodger@python.org>
# Copyright: This module has been placed in the public domain.

"""
Tests for states.py.
"""

import unittest
from .__init__ import DocutilsTestSupport
states = DocutilsTestSupport.states


class FuctionTests(unittest.TestCase):

    escaped = r'escapes: \*one, \\*two, \\\*three'
    nulled = 'escapes: \x00*one, \x00\\*two, \x00\\\x00*three'
    unescaped = r'escapes: *one, \*two, \*three'

    def test_escape2null(self):
        nulled = states.escape2null(self.escaped)
        self.assertEqual(nulled, self.nulled)
        nulled = states.escape2null(self.escaped + '\\')
        self.assertEqual(nulled, self.nulled + '\x00')

    def test_unescape(self):
        unescaped = states.unescape(self.nulled)
        self.assertEqual(unescaped, self.unescaped)
        restored = states.unescape(self.nulled, 1)
        self.assertEqual(restored, self.escaped)


if __name__ == '__main__':
    unittest.main()