view tests/test-parseindex @ 2550:45235e492cc6

Disable automatic line endings conversion on windows

The rationale behind this is that such conversion implies a particular
situation in which all files in the repo are terminated by only LF. This
is documented nowhere and it bit me sharply when I upgraded.

Furthermore, it works on the assumption that a file containing no NULL
characters are actually a text file. Therefore it cannot guarantee that
no binary file will be harmed in the process.

Currently, if a file already contains CRLF line endings when it is
copied to the working dir from the repo, then the version in the working
dir will be corrupted by an extra CR.

I'm working on a patch that will turn this into a warning. But as a side
effect, committing such a file back will strip it from its CR.

In all case, unrequested data modification can occur under the feet of
the user, which is bad(tm), ihmo.

#!/bin/sh
#
# revlog.parseindex must be able to parse the index file even if
# an index entry is split between two 64k blocks.  The ideal test
# would be to create an index file with inline data where
# 64k < size < 64k + 64 (64k is the size of the read buffer, 64 is
# the size of an index entry) and with an index entry starting right
# before the 64k block boundary, and try to read it.
#
# We approximate that by reducing the read buffer to 1 byte.
#

hg init a
cd a
echo abc > foo
hg add foo
hg commit -m 'add foo' -d '1000000 0'

echo >> foo
hg commit -m 'change foo' -d '1000001 0'
hg log -r 0:

cat >> test.py << EOF
from mercurial import changelog, util
from mercurial.node import *

class singlebyteread(object):
    def __init__(self, real):
        self.real = real

    def read(self, size=-1):
        if size == 65536:
            size = 1
        return self.real.read(size)

    def __getattr__(self, key):
        return getattr(self.real, key)

def opener(*args):
    o = util.opener(*args)
    def wrapper(*a):
        f = o(*a)
        return singlebyteread(f)
    return wrapper

cl = changelog.changelog(opener('.hg'))
print cl.count(), 'revisions:'
for r in xrange(cl.count()):
    print short(cl.node(r))
EOF

python test.py