Mercurial > hg
view tests/test-config-env.py @ 38162:bdf344aea0ee
extensions: peek command table of disabled extensions without importing
With chg where demandimport disabled, and if disk cache not warm, it took
more than 5 seconds to get "unknown command" error when you typo a command
name. This is horrible UX.
The new implementation is less accurate than the original one as Python
can do anything at import time and cmdtable may be imported from another
module, but I think it's good enough.
Note that the new implementation has to parse .py files, which is slightly
slower than executing .pyc if demandimport is enabled.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Thu, 03 May 2018 18:38:02 +0900 |
parents | d4a2e0d5d042 |
children | 2372284d9457 |
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# 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, ) from mercurial.utils import ( procutil, ) testtmp = encoding.environ[b'TESTTMP'] # prepare hgrc files def join(name): return os.path.join(testtmp, name) with open(join(b'sysrc'), 'wb') as f: f.write(b'[ui]\neditor=e0\n[pager]\npager=p0\n') with open(join(b'userrc'), 'wb') as f: f.write(b'[ui]\neditor=e1') # replace rcpath functions so they point to the files above def systemrcpath(): return [join(b'sysrc')] def userrcpath(): return [join(b'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) procutil.stdout.write(b'%s.%s=%s # %s\n' % (section, name, value, util.pconvert(source))) procutil.stdout.write(b'\n') # environment variable overrides printconfigs({}) printconfigs({b'EDITOR': b'e2', b'PAGER': b'p2'})