Mercurial > hg
view tests/test-hghave.t @ 41247:a89b20a49c13
rust-cpython: using MissingAncestors from Python code
As precedently done with LazyAncestors on cpython.rs, we test for the
presence of the 'rustext' module.
incrementalmissingrevs() has two callers within the Mercurial core:
`setdiscovery.partialdiscovery` and the `only()` revset.
This move shows a significant discovery performance improvement
in cases where the baseline is slow: using perfdiscovery on the PyPy
repos, prepared with `contrib/discovery-helper <repo> 50 100`, we
get averaged medians of 403ms with the Rust version vs 742ms without
(about 45% better).
But there are still indications that performance can be worse in cases
the baseline is fast, possibly due to the conversion from Python to
Rust and back becoming the bottleneck. We could measure this on
mozilla-central in cases were the delta is just a few changesets.
This requires confirmation, but if that's the reason, then an
upcoming `partialdiscovery` fully in Rust should solve the problem.
Differential Revision: https://phab.mercurial-scm.org/D5551
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Fri, 30 Nov 2018 14:35:57 +0100 |
parents | c3970be8deca |
children | 7eac24de491d |
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$ . "$TESTDIR/helpers-testrepo.sh" Testing that hghave does not crash when checking features $ hghave --test-features 2>/dev/null Testing hghave extensibility for third party tools $ cat > hghaveaddon.py <<EOF > import hghave > @hghave.check("custom", "custom hghave feature") > def has_custom(): > return True > EOF (invocation via run-tests.py) $ cat > test-hghaveaddon.t <<EOF > #require custom > $ echo foo > foo > EOF $ ( \ > testrepohgenv; \ > "$PYTHON" $TESTDIR/run-tests.py -j 1 \ > $HGTEST_RUN_TESTS_PURE test-hghaveaddon.t \ > ) running 1 tests using 1 parallel processes . # Ran 1 tests, 0 skipped, 0 failed. (invocation via command line) $ unset TESTDIR $ hghave custom (terminate with exit code 2 at failure of importing hghaveaddon.py) $ rm hghaveaddon.* $ cat > hghaveaddon.py <<NO_CHECK_EOF > importing this file should cause syntax error > NO_CHECK_EOF $ hghave custom failed to import hghaveaddon.py from '.': invalid syntax (hghaveaddon.py, line 1) [2]