view tests/test-hgwebdir-paths.py @ 46089:8ff2d8359d0f

persistent-nodemap: properly ignore non-existent `.nd` data file

This code was meant to handle the case of a nodemap docket file
pointing to a nodemap data file that doesn’t exist (anymore),
but most likely caused an `UnboundLocalError` exception instead
when `data` was used on the next line without being defined.

This case is theoretically possible with a race condition
between two hg processes, but is hard to reproduce or test:

* Process A reads a docket file and finds a UID in it
  that points to a given data file name.
* Process B decides that this same data file needs compacting.
  It writes a new one with a different UID,
  overwrites the docket file,
  then removes the old data file.
* Only then process A tries to a open a file that doesn’t exist anymore.

Differential Revision: https://phab.mercurial-scm.org/D9533

from __future__ import absolute_import

import os
from mercurial import (
    hg,
    ui as uimod,
)
from mercurial.hgweb import hgwebdir_mod

hgwebdir = hgwebdir_mod.hgwebdir

os.mkdir(b'webdir')
os.chdir(b'webdir')

webdir = os.path.realpath(b'.')

u = uimod.ui.load()
hg.repository(u, b'a', create=1)
hg.repository(u, b'b', create=1)
os.chdir(b'b')
hg.repository(u, b'd', create=1)
os.chdir(b'..')
hg.repository(u, b'c', create=1)
os.chdir(b'..')

paths = {
    b't/a/': b'%s/a' % webdir,
    b'b': b'%s/b' % webdir,
    b'coll': b'%s/*' % webdir,
    b'rcoll': b'%s/**' % webdir,
}

config = os.path.join(webdir, b'hgwebdir.conf')
configfile = open(config, 'wb')
configfile.write(b'[paths]\n')
for k, v in paths.items():
    configfile.write(b'%s = %s\n' % (k, v))
configfile.close()

confwd = hgwebdir(config)
dictwd = hgwebdir(paths)

assert len(confwd.repos) == len(dictwd.repos), 'different numbers'
assert len(confwd.repos) == 9, 'expected 9 repos, found %d' % len(confwd.repos)

found = dict(confwd.repos)
for key, path in dictwd.repos:
    assert key in found, 'repository %s was not found' % key
    assert found[key] == path, 'different paths for repo %s' % key