config: introduce "built-in" default configuration settings in default.d
This helps providing a more consistent user experience on all platforms and
with all packaging.
The exact location of default.d depends on how Mercurial is installed and
whether it is 'frozen'. The exact location should never be relevant to users
and is intentionally not explained in details in the documentation. It will
however always be next to the help and templates files.
Note that setting HGRCPATH also disables these defaults. I don't know if that
should be considered a bug or a feature.
import sys, os, subprocess
if subprocess.call(['python', '%s/hghave' % os.environ['TESTDIR'],
'cacheable']):
sys.exit(80)
from mercurial import util, scmutil, extensions, hg, ui
filecache = scmutil.filecache
class fakerepo(object):
def __init__(self):
self._filecache = {}
def join(self, p):
return p
def sjoin(self, p):
return p
@filecache('x', 'y')
def cached(self):
print 'creating'
return 'string from function'
def invalidate(self):
for k in self._filecache:
try:
delattr(self, k)
except AttributeError:
pass
def basic(repo):
print "* neither file exists"
# calls function
repo.cached
repo.invalidate()
print "* neither file still exists"
# uses cache
repo.cached
# create empty file
f = open('x', 'w')
f.close()
repo.invalidate()
print "* empty file x created"
# should recreate the object
repo.cached
f = open('x', 'w')
f.write('a')
f.close()
repo.invalidate()
print "* file x changed size"
# should recreate the object
repo.cached
repo.invalidate()
print "* nothing changed with either file"
# stats file again, reuses object
repo.cached
# atomic replace file, size doesn't change
# hopefully st_mtime doesn't change as well so this doesn't use the cache
# because of inode change
f = scmutil.opener('.')('x', 'w', atomictemp=True)
f.write('b')
f.close()
repo.invalidate()
print "* file x changed inode"
repo.cached
# create empty file y
f = open('y', 'w')
f.close()
repo.invalidate()
print "* empty file y created"
# should recreate the object
repo.cached
f = open('y', 'w')
f.write('A')
f.close()
repo.invalidate()
print "* file y changed size"
# should recreate the object
repo.cached
f = scmutil.opener('.')('y', 'w', atomictemp=True)
f.write('B')
f.close()
repo.invalidate()
print "* file y changed inode"
repo.cached
f = scmutil.opener('.')('x', 'w', atomictemp=True)
f.write('c')
f.close()
f = scmutil.opener('.')('y', 'w', atomictemp=True)
f.write('C')
f.close()
repo.invalidate()
print "* both files changed inode"
repo.cached
def fakeuncacheable():
def wrapcacheable(orig, *args, **kwargs):
return False
def wrapinit(orig, *args, **kwargs):
pass
originit = extensions.wrapfunction(util.cachestat, '__init__', wrapinit)
origcacheable = extensions.wrapfunction(util.cachestat, 'cacheable',
wrapcacheable)
for fn in ['x', 'y']:
try:
os.remove(fn)
except OSError:
pass
basic(fakerepo())
util.cachestat.cacheable = origcacheable
util.cachestat.__init__ = originit
def test_filecache_synced():
# test old behaviour that caused filecached properties to go out of sync
os.system('hg init && echo a >> a && hg ci -qAm.')
repo = hg.repository(ui.ui())
# first rollback clears the filecache, but changelog to stays in __dict__
repo.rollback()
repo.commit('.')
# second rollback comes along and touches the changelog externally
# (file is moved)
repo.rollback()
# but since changelog isn't under the filecache control anymore, we don't
# see that it changed, and return the old changelog without reconstructing
# it
repo.commit('.')
def setbeforeget(repo):
os.remove('x')
os.remove('y')
repo.cached = 'string set externally'
repo.invalidate()
print "* neither file exists"
print repo.cached
repo.invalidate()
f = open('x', 'w')
f.write('a')
f.close()
print "* file x created"
print repo.cached
repo.cached = 'string 2 set externally'
repo.invalidate()
print "* string set externally again"
print repo.cached
repo.invalidate()
f = open('y', 'w')
f.write('b')
f.close()
print "* file y created"
print repo.cached
print 'basic:'
print
basic(fakerepo())
print
print 'fakeuncacheable:'
print
fakeuncacheable()
test_filecache_synced()
print
print 'setbeforeget:'
print
setbeforeget(fakerepo())