tests/test-lfs-pointer.py

procutil: compare fd number to see if stdio protection is needed (issue5992)

When I wrote this function for commandserver at 69f86b937035, testing object
identity was suffice, and I was sloppy enough not to compare fileno() values.
However, it doesn't work in chg session because chgserver reopens stdio to
apply new buffering mode.

This patch partially fixes the issue 5992. Still we have another problem in
chgui._runsystem().

from __future__ import absolute_import, print_function

import os
import sys

# make it runnable using python directly without run-tests.py
sys.path[0:0] = [os.path.join(os.path.dirname(__file__), '..')]

# Import something from Mercurial, so the module loader gets initialized.
from mercurial import pycompat
del pycompat  # unused for now

from hgext.lfs import pointer

def tryparse(text):
    r = {}
    try:
        r = pointer.deserialize(text)
        print('ok')
    except Exception as ex:
        print((b'%s' % ex).decode('ascii'))
    if r:
        text2 = r.serialize()
        if text2 != text:
            print('reconstructed text differs')
    return r

t = (b'version https://git-lfs.github.com/spec/v1\n'
     b'oid sha256:4d7a214614ab2935c943f9e0ff69d22eadbb8f32b1'
     b'258daaa5e2ca24d17e2393\n'
     b'size 12345\n'
     b'x-foo extra-information\n')

tryparse(b'')
tryparse(t)
tryparse(t.replace(b'git-lfs', b'unknown'))
tryparse(t.replace(b'v1\n', b'v1\n\n'))
tryparse(t.replace(b'sha256', b'ahs256'))
tryparse(t.replace(b'sha256:', b''))
tryparse(t.replace(b'12345', b'0x12345'))
tryparse(t.replace(b'extra-information', b'extra\0information'))
tryparse(t.replace(b'extra-information', b'extra\ninformation'))
tryparse(t.replace(b'x-foo', b'x_foo'))
tryparse(t.replace(b'oid', b'blobid'))
tryparse(t.replace(b'size', b'size-bytes').replace(b'oid', b'object-id'))