sapling/eden/scm/tests/test-patch.t
Durham Goode 2e6735be81 patch: fix infinite loop for incorrect patches
Summary:
If a patch declared the length of it's last hunk as N lines, but it
only contained N-1 lines, the Rust code would enter into an infinite loop. This
could happen if a text editor remove the trailing spaces from a patch file.

Let's fix it and add a test

Reviewed By: kulshrax

Differential Revision: D28683977

fbshipit-source-id: 0a999ae108676531a2cf18e77a3b426ba4647164
2021-05-26 11:18:19 -07:00

104 lines
2.7 KiB
Perl

#chg-compatible
$ cat > patchtool.py <<EOF
> from __future__ import absolute_import, print_function
> import sys
> print('Using custom patch')
> if '--binary' in sys.argv:
> print('--binary found !')
> EOF
$ setconfig ui.patch="$PYTHON $TESTTMP/patchtool.py"
$ hg init a
$ cd a
$ echo a > a
$ hg commit -Ama -d '1 0'
adding a
$ echo b >> a
$ hg commit -Amb -d '2 0'
$ cd ..
This test checks that:
- custom patch commands with arguments actually work
- patch code does not try to add weird arguments like
--binary when custom patch commands are used. For instance
--binary is added by default under win32.
check custom patch options are honored
$ hg --cwd a export -o ../a.diff tip
$ hg clone -r 0 a b
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg --cwd b import -v ../a.diff
applying ../a.diff
Using custom patch
applied to working directory
Issue2417: hg import with # comments in description
Prepare source repo and patch:
$ rm $HGRCPATH
$ hg init c
$ cd c
$ printf "a\rc" > a
$ hg ci -A -m 0 a -d '0 0'
$ printf "a\rb\rc" > a
$ cat << eof > log
> first line which can't start with '# '
> # second line is a comment but that shouldn't be a problem.
> A patch marker like this was more problematic even after d7452292f9d3:
> # HG changeset patch
> # User lines looks like this - but it _is_ just a comment
> eof
$ hg ci -l log -d '0 0'
$ hg export -o p 'desc(first)'
$ cd ..
Clone and apply patch:
$ hg clone -r 0 c d --config ui.ignorerevnum=0
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd d
$ hg import ../c/p
applying ../c/p
$ hg log -v -r 'desc(first)'
commit: cd0bde79c428
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: a
description:
first line which can't start with '# '
# second line is a comment but that shouldn't be a problem.
A patch marker like this was more problematic even after d7452292f9d3:
# HG changeset patch
# User lines looks like this - but it _is_ just a comment
$ cd ..
Test invalid patch
$ cd d
$ hg export -r . -o patch.patch
$ hg up -q .^
$ hg debugpython <<EOF
> s = b''.join(open('patch.patch', 'rb').readlines()[:-2])
> open('patch.patch', 'wb').write(s)
> EOF
$ hg import patch.patch
applying patch.patch
abort: hunk processing error - hunk too short
[255]