Mercurial > hg
view tests/test-check-help.t @ 31209:dd2364f5180a
localrepo: handle rename with hardlinks properly
In "aftertrans", we rename "journal.*" to "undo.*". We expect "journal.*"
files to disappear after renaming.
However, if "journal.foo" and "undo.foo" refer to a same file (hardlink),
rename may be a no-op, leaving both files on disk, according to Linux
manpage [1]:
If oldpath and newpath are existing hard links referring to the same
file, then rename() does nothing, and returns a suc‐ cess status.
The POSIX specification [2] is not very clear about what to do.
To be safe, remove "undo.*" before the rename so "journal.*" cannot be left
on disk.
[1]: http://man7.org/linux/man-pages/man2/rename.2.html
[2]: http://pubs.opengroup.org/onlinepubs/9699919799/
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 02 Mar 2017 21:49:30 -0800 |
parents | b6c051cd1231 |
children | a248bbfa0bc7 |
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#require test-repo $ . "$TESTDIR/helpers-testrepo.sh" $ cat <<'EOF' > scanhelptopics.py > from __future__ import absolute_import, print_function > import re > import sys > topics = set() > topicre = re.compile(r':hg:`help ([a-z0-9\-.]+)`') > for fname in sys.argv: > with open(fname) as f: > topics.update(m.group(1) for m in topicre.finditer(f.read())) > for s in sorted(topics): > print(s) > EOF $ cd "$TESTDIR"/.. Check if ":hg:`help TOPIC`" is valid: (use "xargs -n1 -t" to see which help commands are executed) $ hg files 'glob:{hgext,mercurial}/**/*.py' \ > | xargs python "$TESTTMP/scanhelptopics.py" \ > | xargs -n1 hg help > /dev/null