view tests/test-config-env.py @ 34312:d64c2c050b54

progress: demonstrate non-linear progress has a bad ETA experience

Previously, the ETA and speed assumes the progress is linear. Often, due to
network or other issues, it could be fast for the most time, and suddenly
slow down:

    [====================================================>         ]
     \___________________________________________/\______/
        very fast                                  suddenly much slower

This patch adds a test demonstrating the ETA could be way off in those
cases.

Differential Revision: https://phab.mercurial-scm.org/D819

# 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'})