view tests/test-convert-hg-source @ 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

cat >> $HGRCPATH <<EOF
[extensions]
convert=
[convert]
hg.saverev=False
EOF

hg init orig
cd orig

echo foo > foo
echo bar > bar
hg ci -qAm 'add foo bar' -d '0 0'

echo >> foo
hg ci -m 'change foo' -d '1 0'

hg up -qC 0
hg copy --after --force foo bar
hg copy foo baz
hg ci -m 'make bar and baz copies of foo' -d '2 0'

hg merge
hg ci -m 'merge local copy' -d '3 0'

hg up -C 1
hg merge 2
hg ci -m 'merge remote copy' -d '4 0'

chmod +x baz
hg ci -m 'mark baz executable' -d '5 0'

cd ..
hg convert --datesort orig new 2>&1 | grep -v 'subversion python bindings could not be loaded'
cd new
hg out ../orig
cd ..

echo % init broken repository
hg init broken
cd broken
echo a >> a
echo b >> b
hg ci -qAm init
echo a >> a
echo b >> b
hg copy b c
hg ci -qAm changeall
hg up -qC 0
echo bc >> b
hg ci -m changebagain
HGMERGE=internal:local hg -q merge
hg ci -m merge
hg mv b d
hg ci -m moveb
echo % break it
rm .hg/store/data/b.*
cd ..

hg --config convert.hg.ignoreerrors=True convert broken fixed
hg -R fixed verify
echo '% manifest -r 0'
hg -R fixed manifest -r 0
echo '% manifest -r tip'
hg -R fixed manifest -r tip

true