dirstate-v2: no longer register the data-file during transaction
If the data file change during the transaction, we cannot truncate it.
The content of the file itself is fine as it will get backed up at the same time
as the docket.
Leaving the trailing data at the end of failed transaction is fine. The
dirstate-v2 format supports it. The dead data will simply we written over if
necessary.
import os
from mercurial import (
hg,
scmutil,
ui as uimod,
util,
)
chdir = os.chdir
mkdir = os.mkdir
pjoin = os.path.join
walkrepos = scmutil.walkrepos
checklink = util.checklink
u = uimod.ui.load()
sym = checklink(b'.')
hg.repository(u, b'top1', create=1)
mkdir(b'subdir')
chdir(b'subdir')
hg.repository(u, b'sub1', create=1)
mkdir(b'subsubdir')
chdir(b'subsubdir')
hg.repository(u, b'subsub1', create=1)
chdir(os.path.pardir)
if sym:
os.symlink(os.path.pardir, b'circle')
os.symlink(pjoin(b'subsubdir', b'subsub1'), b'subsub1')
def runtest():
reposet = frozenset(walkrepos(b'.', followsym=True))
if sym and (len(reposet) != 3):
print("reposet = %r" % (reposet,))
print(
(
"Found %d repositories when I should have found 3"
% (len(reposet),)
)
)
if (not sym) and (len(reposet) != 2):
print("reposet = %r" % (reposet,))
print(
(
"Found %d repositories when I should have found 2"
% (len(reposet),)
)
)
sub1set = frozenset(
(pjoin(b'.', b'sub1'), pjoin(b'.', b'circle', b'subdir', b'sub1'))
)
if len(sub1set & reposet) != 1:
print("sub1set = %r" % (sub1set,))
print("reposet = %r" % (reposet,))
print("sub1set and reposet should have exactly one path in common.")
sub2set = frozenset(
(pjoin(b'.', b'subsub1'), pjoin(b'.', b'subsubdir', b'subsub1'))
)
if len(sub2set & reposet) != 1:
print("sub2set = %r" % (sub2set,))
print("reposet = %r" % (reposet,))
print("sub2set and reposet should have exactly one path in common.")
sub3 = pjoin(b'.', b'circle', b'top1')
if sym and sub3 not in reposet:
print("reposet = %r" % (reposet,))
print("Symbolic links are supported and %s is not in reposet" % (sub3,))
runtest()
if sym:
# Simulate not having symlinks.
del os.path.samestat
sym = False
runtest()