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py3: conditionalize test-demandimport.py for Python 3...
py3: conditionalize test-demandimport.py for Python 3 The Python 3 lazy importer uses the LazyLoader that is part of importlib. On Python 3 and later, LazyLoader is implemented using a custom module type that defines a __getattribute__ which triggers module loading. Furthermore, there are additional differences as well. For example, it appears that Python 3 will return an existing sys.modules entry instead of constructing a new module object. This commit adds additional test coverage for lazy importing behavior to cover the differences between Python 2 and 3. This reveals that the test and some lazy import functionality is kinda busted. For example, the test assumes "contextlib" will be lazy. But in reality an import before it has already imported contextlib! There's definitely room to improve the behavior of the demand importer code, both for Python 2 and 3. But at least the test passes on Python 3 now. Differential Revision: https://phab.mercurial-scm.org/D5796

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localstore.py
68 lines | 2.4 KiB | text/x-python | PythonLexer
# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''store class for local filesystem'''
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import util
from . import (
basestore,
lfutil,
)
class localstore(basestore.basestore):
'''localstore first attempts to grab files out of the store in the remote
Mercurial repository. Failing that, it attempts to grab the files from
the user cache.'''
def __init__(self, ui, repo, remote):
self.remote = remote.local()
super(localstore, self).__init__(ui, repo, self.remote.url())
def put(self, source, hash):
if lfutil.instore(self.remote, hash):
return
lfutil.link(source, lfutil.storepath(self.remote, hash))
def exists(self, hashes):
retval = {}
for hash in hashes:
retval[hash] = lfutil.instore(self.remote, hash)
return retval
def _getfile(self, tmpfile, filename, hash):
path = lfutil.findfile(self.remote, hash)
if not path:
raise basestore.StoreError(filename, hash, self.url,
_("can't get file locally"))
with open(path, 'rb') as fd:
return lfutil.copyandhash(
util.filechunkiter(fd), tmpfile)
def _verifyfiles(self, contents, filestocheck):
failed = False
for cset, filename, expectedhash in filestocheck:
storepath, exists = lfutil.findstorepath(self.repo, expectedhash)
if not exists:
storepath, exists = lfutil.findstorepath(
self.remote, expectedhash)
if not exists:
self.ui.warn(
_('changeset %s: %s references missing %s\n')
% (cset, filename, storepath))
failed = True
elif contents:
actualhash = lfutil.hashfile(storepath)
if actualhash != expectedhash:
self.ui.warn(
_('changeset %s: %s references corrupted %s\n')
% (cset, filename, storepath))
failed = True
return failed