view tests/test-duplicateoptions.py @ 45545:e5e1285b6f6f

largefiles: prevent in-memory merge instead of switching to on-disk

I enabled in-memory merge by default while testing some changes. I
spent quite some time troubleshooting why largefiles was still
creating an on-disk mergestate. Then I found out that it ignores the
callers `wc` argument to `mergemod._update()` and always uses on-disk
merge. This patch changes that so we raise an error if largefiles is
used with in-memory merge. That way we'll notice if in-memory merge is
used with largefiles instead of silently replacing ignoring the
`overlayworkingctx` instance and updating the working copy instead.

I felt a little bad that this would break things more for users with
both largefiles and in-memory rebase enabled. So I also added a
higher-level override to make sure that largefiles disables in-memory
rebase. It turns out that that fixes `run-tests.py -k largefiles
--extra-config-opt rebase.experimental.inmemory=1`.

Differential Revision: https://phab.mercurial-scm.org/D9069

from __future__ import absolute_import, print_function
import os
from mercurial import (
    commands,
    extensions,
    ui as uimod,
)

ignore = {b'highlight', b'win32text', b'factotum', b'beautifygraph'}

try:
    import sqlite3

    del sqlite3  # unused, just checking that import works
except ImportError:
    ignore.add(b'sqlitestore')

if os.name != 'nt':
    ignore.add(b'win32mbcs')

disabled = [ext for ext in extensions.disabled().keys() if ext not in ignore]

hgrc = open(os.environ["HGRCPATH"], 'wb')
hgrc.write(b'[extensions]\n')

for ext in disabled:
    hgrc.write(ext + b'=\n')

hgrc.close()

u = uimod.ui.load()
extensions.loadall(u)
extensions.populateui(u)

globalshort = set()
globallong = set()
for option in commands.globalopts:
    option[0] and globalshort.add(option[0])
    option[1] and globallong.add(option[1])

for cmd, entry in commands.table.items():
    seenshort = globalshort.copy()
    seenlong = globallong.copy()
    for option in entry[1]:
        if (option[0] and option[0] in seenshort) or (
            option[1] and option[1] in seenlong
        ):
            print("command '" + cmd + "' has duplicate option " + str(option))
        seenshort.add(option[0])
        seenlong.add(option[1])