tests/test-mq-guards

Avoid extra filelogs entries.

Right now, there are some situations in which localrepo.filecommit can
create filelog entries even though they're not needed.  For example:

- permissions for a file have changed;

- qrefresh can create a filelog entry identical to its parent (see the
  added test);

- convert-repo creates extra filelog entries in every merge where the
  first parent has added files (for example, changeset ebebe9577a1a of
  the kernel repo added extra filelog entries to files in the
  arch/blackfin directory, even though the merge should only touch the
  drivers/ata directory).  This makes "hg log file" in a converted repo
  less useful than it could be, since it may mention many merges that
  don't actually touch that specific file.

They all come from the same basic problem:  localrepo.commit (through
filecommit) creates new filelog entries for all files passed to it
(except for some cases during a merge).

Patch and test case provided by Benoit.

This should fix issue351.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg init
hg qinit

echo x > x
hg ci -Ama

hg qnew a.patch
echo a > a
hg add a
hg qrefresh

hg qnew b.patch
echo b > b
hg add b
hg qrefresh

hg qnew c.patch
echo c > c
hg add c
hg qrefresh

hg qpop -a

echo % should fail
hg qguard does-not-exist.patch +bleh

echo % should fail
hg qguard +fail

hg qpush
echo % should guard a.patch
hg qguard +a
echo % should print +a
hg qguard
hg qpop

hg qguard a.patch
echo % should push b.patch
hg qpush

hg qpop
hg qselect a
echo % should push a.patch
hg qpush

hg qguard c.patch -a
echo % should print -a
hg qguard c.patch

echo % should skip c.patch
hg qpush -a
echo % should display b.patch
hg qtop

hg qguard -n c.patch
echo % should push c.patch
hg qpush -a

hg qpop -a
hg qselect -n
echo % should push all
hg qpush -a

hg qpop -a
hg qguard a.patch +1
hg qguard b.patch +2
hg qselect 1
echo % should push a.patch, not b.patch
hg qpush
hg qpush
hg qpop -a

hg qselect 2
echo % should push b.patch
hg qpush
hg qpush -a
# Used to be an issue with holes in the patch sequence
# So, put one hole on the base and ask for topmost patch.
hg qtop
hg qpop -a

hg qselect 1 2
echo % should push a.patch, b.patch
hg qpush
hg qpush
hg qpop -a

hg qguard a.patch +1 +2 -3
hg qselect 1 2 3
echo % list patches and guards
hg qguard -l
echo % list series
hg qseries -v
echo % list guards
hg qselect
echo % should push b.patch
hg qpush

hg qpush -a
hg qselect -n --reapply
echo % guards in series file: +1 +2 -3
hg qselect -s
echo % should show c.patch
hg qapplied

hg qrename a.patch new.patch
echo % should show :
echo % new.patch: +1 +2 -3
echo % b.patch: +2
echo % c.patch: unguarded
hg qguard -l

hg qnew d.patch
hg qpop
echo % should show new.patch and b.patch as Guarded, c.patch as Applied
echo % and d.patch as Unapplied
hg qseries -v

hg qguard d.patch +2
echo % new.patch, b.patch: Guarded. c.patch: Applied. d.patch: Guarded.
hg qseries -v

qappunappv()
(
    for command in qapplied "qapplied -v" qunapplied "qunapplied -v"; do
        echo % hg $command
        hg $command
    done
)

hg qpop -a
hg qguard -l
qappunappv
hg qselect 1
qappunappv
hg qpush -a
qappunappv
hg qselect 2
qappunappv

for patch in `hg qseries`; do
    echo % hg qapplied $patch
    hg qapplied $patch
    echo % hg qunapplied $patch
    hg qunapplied $patch
done

echo % hg qseries -m: only b.patch should be shown
echo the guards file was not ignored in the past
hg qdelete -k b.patch
hg qseries -m