view tests/testlib/crash_transaction_late.py @ 51489:659f766629c8

branchcache: stop using `copy(…)` in `replace(…)`

The `copy` method is mostly used for a filter level to inherit the branchmap
from a subset. So we stop using (abusing) it in "replace" to ensure `copy` is
used only for inheritance purposes.

Since `replace` is a method of the BranchMapCache, it seems fine to do lower
level operation there.

# tiny extension to abort a transaction very late during test
#
# Copyright 2020 Pierre-Yves David <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.


from mercurial import (
    error,
)


def abort(fp):
    raise error.Abort(b"This is a late abort")


def reposetup(ui, repo):
    class LateAbortRepo(repo.__class__):
        def transaction(self, *args, **kwargs):
            tr = super(LateAbortRepo, self).transaction(*args, **kwargs)
            tr.addfilegenerator(
                b'late-abort',
                [b'late-abort'],
                abort,
                order=9999999,
                post_finalize=True,
            )
            return tr

    repo.__class__ = LateAbortRepo