Mercurial > hg
view tests/test-rust-ancestor.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 | 8a8305f557d0 |
children | 59fa3890d40a |
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from __future__ import absolute_import import sys import unittest from mercurial import ( error, node, ) from mercurial.testing import revlog as revlogtesting try: from mercurial import rustext rustext.__name__ # trigger immediate actual import except ImportError: rustext = None else: # this would fail already without appropriate ancestor.__package__ from mercurial.rustext.ancestor import ( AncestorsIterator, LazyAncestors, MissingAncestors, ) from mercurial.rustext import dagop try: from mercurial.cext import parsers as cparsers except ImportError: cparsers = None @unittest.skipIf( rustext is None, 'The Rust version of the "ancestor" module is not available. It is needed' ' for this test.', ) @unittest.skipIf( rustext is None, 'The Rust or C version of the "parsers" module, which the "ancestor" module' ' relies on, is not available.', ) class rustancestorstest(revlogtesting.RevlogBasedTestBase): """Test the correctness of binding to Rust code. This test is merely for the binding to Rust itself: extraction of Python variable, giving back the results etc. It is not meant to test the algorithmic correctness of the operations on ancestors it provides. Hence the very simple embedded index data is good enough. Algorithmic correctness is asserted by the Rust unit tests. """ def testiteratorrevlist(self): idx = self.parseindex() # checking test assumption about the index binary data: self.assertEqual( {i: (r[5], r[6]) for i, r in enumerate(idx)}, {0: (-1, -1), 1: (0, -1), 2: (1, -1), 3: (2, -1)}, ) ait = AncestorsIterator(idx, [3], 0, True) self.assertEqual([r for r in ait], [3, 2, 1, 0]) ait = AncestorsIterator(idx, [3], 0, False) self.assertEqual([r for r in ait], [2, 1, 0]) def testlazyancestors(self): idx = self.parseindex() start_count = sys.getrefcount(idx) # should be 2 (see Python doc) self.assertEqual( {i: (r[5], r[6]) for i, r in enumerate(idx)}, {0: (-1, -1), 1: (0, -1), 2: (1, -1), 3: (2, -1)}, ) lazy = LazyAncestors(idx, [3], 0, True) # we have two more references to the index: # - in its inner iterator for __contains__ and __bool__ # - in the LazyAncestors instance itself (to spawn new iterators) self.assertEqual(sys.getrefcount(idx), start_count + 2) self.assertTrue(2 in lazy) self.assertTrue(bool(lazy)) self.assertEqual(list(lazy), [3, 2, 1, 0]) # a second time to validate that we spawn new iterators self.assertEqual(list(lazy), [3, 2, 1, 0]) # now let's watch the refcounts closer ait = iter(lazy) self.assertEqual(sys.getrefcount(idx), start_count + 3) del ait self.assertEqual(sys.getrefcount(idx), start_count + 2) del lazy self.assertEqual(sys.getrefcount(idx), start_count) # let's check bool for an empty one self.assertFalse(LazyAncestors(idx, [0], 0, False)) def testmissingancestors(self): idx = self.parseindex() missanc = MissingAncestors(idx, [1]) self.assertTrue(missanc.hasbases()) self.assertEqual(missanc.missingancestors([3]), [2, 3]) missanc.addbases({2}) self.assertEqual(missanc.bases(), {1, 2}) self.assertEqual(missanc.missingancestors([3]), [3]) self.assertEqual(missanc.basesheads(), {2}) def testmissingancestorsremove(self): idx = self.parseindex() missanc = MissingAncestors(idx, [1]) revs = {0, 1, 2, 3} missanc.removeancestorsfrom(revs) self.assertEqual(revs, {2, 3}) def testrefcount(self): idx = self.parseindex() start_count = sys.getrefcount(idx) # refcount increases upon iterator init... ait = AncestorsIterator(idx, [3], 0, True) self.assertEqual(sys.getrefcount(idx), start_count + 1) self.assertEqual(next(ait), 3) # and decreases once the iterator is removed del ait self.assertEqual(sys.getrefcount(idx), start_count) # and removing ref to the index after iterator init is no issue ait = AncestorsIterator(idx, [3], 0, True) del idx self.assertEqual(list(ait), [3, 2, 1, 0]) def testgrapherror(self): data = ( revlogtesting.data_non_inlined[: 64 + 27] + b'\xf2' + revlogtesting.data_non_inlined[64 + 28 :] ) idx = cparsers.parse_index2(data, False)[0] with self.assertRaises(rustext.GraphError) as arc: AncestorsIterator(idx, [1], -1, False) exc = arc.exception self.assertIsInstance(exc, ValueError) # rust-cpython issues appropriate str instances for Python 2 and 3 self.assertEqual(exc.args, ('ParentOutOfRange', 1)) def testwdirunsupported(self): # trying to access ancestors of the working directory raises # WdirUnsupported directly idx = self.parseindex() with self.assertRaises(error.WdirUnsupported): list(AncestorsIterator(idx, [node.wdirrev], -1, False)) def testheadrevs(self): idx = self.parseindex() self.assertEqual(dagop.headrevs(idx, [1, 2, 3]), {3}) if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)