obsolescence: add test for the "branch replacement" logic during push, case A2
Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.
The current code for this logic is very basic (eg:
issue4354) and was poorly
tested. We have a better implementation coming in the evolve extension fixing
these issues and with more serious tests coverage. In the process of upstreaming
this improved logic, we start with adding the test case that are already passing
with the current implementation. Once they are all in, we'll upstream the better
implementation and the extra test case.
See inline documentation for details about the test case added in this
changeset.
#!/usr/bin/env python
# fixpax - fix ownership in bdist_mpkg output
#
# Copyright 2015 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# MIT license (http://opensource.org/licenses/MIT)
"""Set file ownership to 0 in an Archive.pax.gz.
Suitable for fixing files bdist_mpkg output:
*.mpkg/Contents/Packages/*.pkg/Contents/Archive.pax.gz
"""
from __future__ import absolute_import, print_function
import gzip
import os
import sys
def fixpax(iname, oname):
i = gzip.GzipFile(iname)
o = gzip.GzipFile(oname, "w")
while True:
magic = i.read(6)
dev = i.read(6)
ino = i.read(6)
mode = i.read(6)
i.read(6) # uid
i.read(6) # gid
nlink = i.read(6)
rdev = i.read(6)
mtime = i.read(11)
namesize = i.read(6)
filesize = i.read(11)
name = i.read(int(namesize, 8))
data = i.read(int(filesize, 8))
o.write(magic)
o.write(dev)
o.write(ino)
o.write(mode)
o.write("000000")
o.write("000000")
o.write(nlink)
o.write(rdev)
o.write(mtime)
o.write(namesize)
o.write(filesize)
o.write(name)
o.write(data)
if name.startswith("TRAILER!!!"):
o.write(i.read())
break
o.close()
i.close()
if __name__ == '__main__':
for iname in sys.argv[1:]:
print('fixing file ownership in %s' % iname)
oname = sys.argv[1] + '.tmp'
fixpax(iname, oname)
os.rename(oname, iname)