Mercurial > hg
view tests/helpers-testrepo.sh @ 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 | 152f1b47e0ad |
children |
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# In most cases, the mercurial repository can be read by the bundled hg, but # that isn't always true because third-party extensions may change the store # format, for example. In which case, the system hg installation is used. # # We want to use the hg version being tested when interacting with the test # repository, and the system hg when interacting with the mercurial source code # repository. # # The mercurial source repository was typically orignally cloned with the # system mercurial installation, and may require extensions or settings from # the system installation. if [ -n "$HGTESTEXTRAEXTENSIONS" ]; then for extension in $HGTESTEXTRAEXTENSIONS; do extraoptions="$extraoptions --config extensions.$extension=!" done fi syshg () { ( syshgenv exec hg "$@" ) } # Revert the environment so that running "hg" runs the system hg # rather than the test hg installation. syshgenv () { . "$HGTEST_RESTOREENV" HGPLAIN=1 export HGPLAIN } # The test-repo is a live hg repository which may have evolution markers # created, e.g. when a ~/.hgrc enabled evolution. # # Tests may be run using a custom HGRCPATH, which do not enable evolution # markers by default. # # If test-repo includes evolution markers, and we do not enable evolution # markers, hg will occasionally complain when it notices them, which disrupts # tests resulting in sporadic failures. # # Since we aren't performing any write operations on the test-repo, there's # no harm in telling hg that we support evolution markers, which is what the # following lines for the hgrc file do: cat >> "$HGRCPATH" << EOF [experimental] evolution = createmarkers EOF # Use the system hg command if the bundled hg can't read the repository with # no warning nor error. if [ -n "`hg id -R "$TESTDIR/.." 2>&1 >/dev/null`" ]; then alias testrepohg=syshg alias testrepohgenv=syshgenv else alias testrepohg="hg $extraoptions" alias testrepohgenv=: fi