Mercurial > hg
view tests/test-cappedreader.py @ 44261:04a3ae7aba14
chg: force-set LC_CTYPE on server start to actual value from the environment
Python 3.7+ will "coerce" the LC_CTYPE variable in many instances, and this can
cause issues with chg being able to start up. D7550 attempted to fix this, but a
combination of a misreading of the way that python3.7 does the coercion and an
untested state (LC_CTYPE being set to an invalid value) meant that this was
still not quite working.
This change will cause differences between chg and hg: hg will have the LC_CTYPE
environment variable coerced, while chg will not. This is unlikely to cause any
detectable behavior differences in what Mercurial itself outputs, but it does
have two known effects:
- When using hg, the coerced LC_CTYPE will be passed to subprocesses, even
non-python ones. Using chg will remove the coercion, and this will not
happen. This is arguably more correct behavior on chg's part.
- On macOS, if you set your region to Brazil but your language to English,
this isn't representable in locale strings, so macOS sets LC_CTYPE=UTF-8. If
this value is passed along when ssh'ing to a non-macOS machine, some
functions (such as locale.setlocale()) may raise an exception due to an
unsupported locale setting. This is most easily encountered when doing an
interactive commit/split/etc. when using ui.interface=curses.
Differential Revision: https://phab.mercurial-scm.org/D8039
author | Kyle Lippincott <spectral@google.com> |
---|---|
date | Wed, 29 Jan 2020 13:39:50 -0800 |
parents | 2372284d9457 |
children | 6000f5b25c9b |
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from __future__ import absolute_import, print_function import io import unittest from mercurial import util class CappedReaderTests(unittest.TestCase): def testreadfull(self): source = io.BytesIO(b'x' * 100) reader = util.cappedreader(source, 10) res = reader.read(10) self.assertEqual(res, b'x' * 10) self.assertEqual(source.tell(), 10) source.seek(0) reader = util.cappedreader(source, 15) res = reader.read(16) self.assertEqual(res, b'x' * 15) self.assertEqual(source.tell(), 15) source.seek(0) reader = util.cappedreader(source, 100) res = reader.read(100) self.assertEqual(res, b'x' * 100) self.assertEqual(source.tell(), 100) source.seek(0) reader = util.cappedreader(source, 50) res = reader.read() self.assertEqual(res, b'x' * 50) self.assertEqual(source.tell(), 50) source.seek(0) def testreadnegative(self): source = io.BytesIO(b'x' * 100) reader = util.cappedreader(source, 20) res = reader.read(-1) self.assertEqual(res, b'x' * 20) self.assertEqual(source.tell(), 20) source.seek(0) reader = util.cappedreader(source, 100) res = reader.read(-1) self.assertEqual(res, b'x' * 100) self.assertEqual(source.tell(), 100) source.seek(0) def testreadmultiple(self): source = io.BytesIO(b'x' * 100) reader = util.cappedreader(source, 10) for i in range(10): res = reader.read(1) self.assertEqual(res, b'x') self.assertEqual(source.tell(), i + 1) self.assertEqual(source.tell(), 10) res = reader.read(1) self.assertEqual(res, b'') self.assertEqual(source.tell(), 10) source.seek(0) reader = util.cappedreader(source, 45) for i in range(4): res = reader.read(10) self.assertEqual(res, b'x' * 10) self.assertEqual(source.tell(), (i + 1) * 10) res = reader.read(10) self.assertEqual(res, b'x' * 5) self.assertEqual(source.tell(), 45) def readlimitpasteof(self): source = io.BytesIO(b'x' * 100) reader = util.cappedreader(source, 1024) res = reader.read(1000) self.assertEqual(res, b'x' * 100) self.assertEqual(source.tell(), 100) res = reader.read(1000) self.assertEqual(res, b'') self.assertEqual(source.tell(), 100) if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)