1"""Tests for distutils.log"""
2
3import io
4import sys
5import unittest
6from test.support import swap_attr, run_unittest
7
8from distutils import log
9
10class TestLog(unittest.TestCase):
11    def test_non_ascii(self):
12        # Issues #8663, #34421: test that non-encodable text is escaped with
13        # backslashreplace error handler and encodable non-ASCII text is
14        # output as is.
15        for errors in ('strict', 'backslashreplace', 'surrogateescape',
16                       'replace', 'ignore'):
17            with self.subTest(errors=errors):
18                stdout = io.TextIOWrapper(io.BytesIO(),
19                                          encoding='cp437', errors=errors)
20                stderr = io.TextIOWrapper(io.BytesIO(),
21                                          encoding='cp437', errors=errors)
22                old_threshold = log.set_threshold(log.DEBUG)
23                try:
24                    with swap_attr(sys, 'stdout', stdout), \
25                         swap_attr(sys, 'stderr', stderr):
26                        log.debug('Dεbug\tMėssãge')
27                        log.fatal('Fαtal\tÈrrōr')
28                finally:
29                    log.set_threshold(old_threshold)
30
31                stdout.seek(0)
32                self.assertEqual(stdout.read().rstrip(),
33                        'Dεbug\tM?ss?ge' if errors == 'replace' else
34                        'Dεbug\tMssge' if errors == 'ignore' else
35                        'Dεbug\tM\\u0117ss\\xe3ge')
36                stderr.seek(0)
37                self.assertEqual(stderr.read().rstrip(),
38                        'Fαtal\t?rr?r' if errors == 'replace' else
39                        'Fαtal\trrr' if errors == 'ignore' else
40                        'Fαtal\t\\xc8rr\\u014dr')
41
42def test_suite():
43    return unittest.makeSuite(TestLog)
44
45if __name__ == "__main__":
46    run_unittest(test_suite())
47