tests: add a wrapper to run fsmonitor tests
This script does a bunch of non-trivial configuration work: in particular, it
sets up an isolated instance of Watchman which isn't affected by global state
and can be torn down on completion.
This script also sets the HGFSMONITOR_TESTS environment variable, which hghave
will use in the next patch to allow gating on whether fsmonitor is enabled.
With fsmonitor enabled, there appear to be a number of failures in the test
suite. It's not yet clear to me why they're happening, but if someone would
like to jump in and fix some of them I hope this will be helpful for that.
# Test the config layer generated by environment variables
from __future__ import absolute_import, print_function
import os
from mercurial import (
encoding,
rcutil,
ui as uimod,
util,
)
testtmp = encoding.environ['TESTTMP']
# prepare hgrc files
def join(name):
return os.path.join(testtmp, name)
with open(join('sysrc'), 'w') as f:
f.write('[ui]\neditor=e0\n[pager]\npager=p0\n')
with open(join('userrc'), 'w') as f:
f.write('[ui]\neditor=e1')
# replace rcpath functions so they point to the files above
def systemrcpath():
return [join('sysrc')]
def userrcpath():
return [join('userrc')]
rcutil.systemrcpath = systemrcpath
rcutil.userrcpath = userrcpath
os.path.isdir = lambda x: False # hack: do not load default.d/*.rc
# utility to print configs
def printconfigs(env):
encoding.environ = env
rcutil._rccomponents = None # reset cache
ui = uimod.ui.load()
for section, name, value in ui.walkconfig():
source = ui.configsource(section, name)
print('%s.%s=%s # %s' % (section, name, value, util.pconvert(source)))
print('')
# environment variable overrides
printconfigs({})
printconfigs({'EDITOR': 'e2', 'PAGER': 'p2'})