view tests/test-revert @ 8742:a964ab624385

merge: allow merging going backwards

New behavior is generally superior and more correct, except possibly
with regards to missing files. hg up . is now effectively a no-op,
which is probably the desired behavior for people expecting to move to
tip, but may surprise people who were expecting deleted files to
reappear.

case 1: update to .

a-w -> a-w

classic: ancestor a
 missing     recreated     right?
 rmed        recreated     WRONG
 added       forgotten     WRONG
 changed     preserved     RIGHT
 conflicted  can't happen

backward merge: ancestor a  (NO EFFECT)
 missing     missing      wrong?
 rm'ed       rm'ed        RIGHT
 added       preserved	  RIGHT
 changed     preserved    RIGHT
 conflicted  can't happen

case 2: update to ancestor of .

a-b-w -> b-w
          \
           a

classic:  ancestor a
 missing       recreated        right?
 rmed          recreated        wrong?
 added         forgotten        wrong?
 changed       preserved        RIGHT
 conflicted    preserved        wrong?

backwards merge: ancestor b
 missing       missing or conflict  right?
 rm'ed         missing or conflict  right?
 changed       preserved            RIGHT
 conflicted    merge                RIGHT
 added         preserved            right?

#!/bin/sh

hg init repo
cd repo
echo 123 > a
echo 123 > c
echo 123 > e
hg add a c e
hg commit -m "first" -d "1000000 0" a c e
echo 123 > b
echo %% should show b unknown
hg status
echo 12 > c
echo %% should show b unknown and c modified
hg status
hg add b
echo %% should show b added and c modified
hg status
hg rm a
echo %% should show a removed, b added and c modified
hg status
hg revert a
echo %% should show b added, copy saved, and c modified
hg status
hg revert b
echo %% should show b unknown, and c modified
hg status
hg revert --no-backup c
echo %% should show unknown: b
hg status
hg add b
echo %% should show b added
hg status b
rm b
echo %% should show b deleted
hg status b
hg revert -v b
echo %% should not find b
hg status b
echo %% should show a c e
ls
echo %% should verbosely save backup to e.orig
echo z > e
hg revert --all -v
echo %% should say no changes needed
hg revert a
echo %% should say file not managed
echo q > q
hg revert q
rm q
echo %% should say file not found
hg revert notfound
touch d
hg add d
hg rm a
hg commit -m "second" -d "1000000 0"
echo z > z
hg add z
hg st
echo %% should add a, remove d, forget z
hg revert --all -r0
echo %% should forget a, undelete d
hg revert --all -rtip
rm a *.orig
echo %% should silently add a
hg revert -r0 a
hg st a
hg rm d
hg st d
echo %% should silently keep d removed
hg revert -r0 d
hg st d

hg update -C
chmod +x c
hg revert --all
echo %% should print non-executable
test -x c || echo non-executable

chmod +x c
hg commit -d '1000001 0' -m exe

chmod -x c
hg revert --all
echo %% should print executable
test -x c && echo executable

cd ..

echo %% issue 241
hg init a
cd a
echo a >> a
hg commit -A -d '1 0' -m a
echo a >> a
hg commit -d '2 0' -m a
hg update 0
mkdir b
echo b > b/b

echo % should fail - no arguments
hg revert -rtip

echo % should succeed
hg revert --all -rtip

echo %% issue332
hg ci -A -m b -d '1000001 0'
echo foobar > b/b
mkdir newdir
echo foo > newdir/newfile
hg add newdir/newfile
hg revert b newdir
echo foobar > b/b
hg revert .

echo % reverting a rename target should revert the source
hg mv a newa
hg revert newa
hg st a newa

cd ..

hg init ignored
cd ignored
echo '^ignored$' > .hgignore
echo '^ignoreddir$' >> .hgignore
echo '^removed$' >> .hgignore

mkdir ignoreddir
touch ignoreddir/file
touch ignoreddir/removed
touch ignored
touch removed
echo '%% 4 ignored files (we will add/commit everything)'
hg st -A -X .hgignore
hg ci -qAm 'add files' ignored ignoreddir/file ignoreddir/removed removed

echo >> ignored
echo >> ignoreddir/file
hg rm removed ignoreddir/removed
echo '%% should revert ignored* and undelete *removed'
hg revert -a --no-backup
hg st -mardi

hg up -qC
echo >> ignored
hg rm removed
echo %% should silently revert the named files
hg revert --no-backup ignored removed
hg st -mardi