annotate tests/fakemergerecord.py @ 34107:4f60720cf0df

blackbox: fix rotation with chg

The added test will show:

  $ $PYTHON showsize.py .hg/blackbox*
  .hg/blackbox.log: < 500
  .hg/blackbox.log.1: < 500
  .hg/blackbox.log.2: < 500
  .hg/blackbox.log.3: < 500
  .hg/blackbox.log.4: < 500
  .hg/blackbox.log.5: >= 500

with previous code.

The issue is caused by blackbox caching file objects *by path*, and the
rotation size check could run on a wrong file object (i.e. it should check
"blackbox.log", but `filehandles["blackbox.log"]` contains a file object
that has been renamed to "blackbox.log.5").

This patch removes the "filehandlers" global cache added by 45313f5a3a8c to
solve the issue.

I think the original patch was trying to make different ui objects use a same
file object if their blackbox.log path is the same. In theory it could also
be problematic in the rotation case. Anyway, that should become unnecessary
after D650.

Differential Revision: https://phab.mercurial-scm.org/D648

# Extension to write out fake unsupported records into the merge state
#
#

from __future__ import absolute_import

from mercurial import (
    merge,
    registrar,
)

cmdtable = {}
command = registrar.command(cmdtable)

@command('fakemergerecord',
         [('X', 'mandatory', None, 'add a fake mandatory record'),
          ('x', 'advisory', None, 'add a fake advisory record')], '')
def fakemergerecord(ui, repo, *pats, **opts):
    with repo.wlock():
        ms = merge.mergestate.read(repo)
        records = ms._makerecords()
        if opts.get('mandatory'):
            records.append(('X', 'mandatory record'))
        if opts.get('advisory'):
            records.append(('x', 'advisory record'))
        ms._writerecords(records)