Mercurial > hg
view tests/test-dirs.py @ 48454:473af5cbc209
rhg: Add support for `rhg status --copies`
Copy sources are collected during `status()` rather than after the fact like
in Python, because `status()` takes a `&mut` exclusive reference to the dirstate map
(in order to potentially mutate it for directory mtimes) and returns `Cow<'_, HgPath>`
that borrow the dirstate map.
Even though with `Cow` only some shared borrows remain, the still extend the same
lifetime of the initial `&mut` so the dirstate map cannot be borrowed again
to access copy sources after the fact:
https://doc.rust-lang.org/nomicon/lifetime-mismatch.html#limits-of-lifetimes
Additionally, collecting copy sources during the dirstate tree traversal that
`status()` already does avoids the cost of another traversal or other lookups
(though I haven’t benchmarked that cost).
Differential Revision: https://phab.mercurial-scm.org/D11899
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Fri, 10 Dec 2021 16:18:58 +0100 |
parents | 627cd8f33db0 |
children | 6000f5b25c9b |
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from __future__ import absolute_import import unittest import silenttestrunner from mercurial import pathutil class dirstests(unittest.TestCase): def testdirs(self): for case, want in [ (b'a/a/a', [b'a', b'a/a', b'']), (b'alpha/beta/gamma', [b'', b'alpha', b'alpha/beta']), ]: d = pathutil.dirs([]) d.addpath(case) self.assertEqual(sorted(d), sorted(want)) def testinvalid(self): with self.assertRaises(ValueError): d = pathutil.dirs([]) d.addpath(b'a//b') if __name__ == '__main__': silenttestrunner.main(__name__)