view tests/test-convert-cvs-branch @ 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

# This is http://www.selenic.com/mercurial/bts/issue1148

"$TESTDIR/hghave" cvs || exit 80

cvscall()
{
    cvs -f "$@"
}

echo "[extensions]" >> $HGRCPATH
echo "convert = " >> $HGRCPATH
echo "graphlog = " >> $HGRCPATH
echo "[convert]" >> $HGRCPATH
echo "cvsps=builtin" >> $HGRCPATH
echo "cvsps.cache=0" >> $HGRCPATH

echo % create cvs repository
mkdir cvsrepo
cd cvsrepo
CVSROOT=`pwd`
export CVSROOT
CVS_OPTIONS=-f
export CVS_OPTIONS
cd ..

cvscall -q -d "$CVSROOT" init

echo % Create a new project

mkdir src
cd src
echo "1" > a
echo "1" > b
cvscall import -m "init" src v0 r0 | sort
cd ..
cvscall co src
cd src

echo % Branch the project

cvscall tag -b BRANCH
cvscall up -r BRANCH > /dev/null

echo % Modify file a, then b, then a 

echo "2" > a
cvscall ci -m "mod a" | grep '<--' | sed -e 's:.*src/\(.*\),v.*:checking in src/\1,v:g'

echo "2" > b
cvscall ci -m "mod b" | grep '<--' | sed -e 's:.*src/\(.*\),v.*:checking in src/\1,v:g'

echo "3" > a
cvscall ci -m "mod a again" | grep '<--' | sed -e 's:.*src/\(.*\),v.*:checking in src/\1,v:g'

echo % Convert

cd ..
hg convert src | sed -e 's/connecting to.*cvsrepo/connecting to cvsrepo/g'

echo % Check the result

hg -R src-hg glog --template '{rev} ({branches}) {desc} files: {files}\n'