view tests/test-rebase-interruptions @ 10189:e451e599fbcf

patch: support diff data loss detection and upgrade

In worst case, generating diff in upgrade mode can be two times more expensive
than generating it in git mode directly: we may have to regenerate the whole
diff again whenever a git feature is detected. Also, the first diff attempt is
completely buffered instead of being streamed. That said, even without having
profiled it yet, I am convinced we can fast-path the upgrade mode if necessary
were it to be used in regular diff commands, and not only in mq where avoiding
data loss is worth the price.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "graphlog=" >> $HGRCPATH
echo "rebase=" >> $HGRCPATH

BASE=`pwd`

addcommit () {
    echo $1 > $1
    hg add $1
    hg commit -d "${2} 0" -m $1
}

commit () {
    hg commit -d "${2} 0" -m $1
}

createrepo () {
    cd $BASE
    rm -rf a
    hg init a
    cd a
    addcommit "A" 0
    addcommit "B" 1
    echo "C" >> A
    commit "C" 2

    hg update -C 0
    echo "D" >> A
    commit "D" 3
    addcommit "E" 4
}

echo "% Changes during an interruption - continue"
createrepo > /dev/null 2>&1
hg glog  --template '{rev}: {desc}\n'

echo
echo "% - Rebasing B onto E"
hg rebase -s 1 -d 4 2>&1 | sed 's/\(saving bundle to \).*/\1/'

echo
echo "% - Force a commit on C during the interruption"
hg update -C 2
addcommit "Extra" 5
hg glog  --template '{rev}: {desc}\n'

echo
echo "% - Resume the rebasing"
hg rebase --continue

echo
echo "% - Solve the conflict and go on"
echo 'conflict solved' > A
rm A.orig
hg resolve -m A
hg rebase --continue
hg glog  --template '{rev}: {desc}\n'

echo
echo
echo "% Changes during an interruption - abort"
createrepo > /dev/null 2>&1
hg glog  --template '{rev}: {desc}\n'

echo
echo "% Rebasing B onto E"
hg rebase -s 1 -d 4 2>&1 | sed 's/\(saving bundle to \).*/\1/'

echo
echo "% Force a commit on B' during the interruption"
hg update -C 5
addcommit "Extra" 6
hg glog  --template '{rev}: {desc}\n'

echo
echo "% Abort the rebasing"
hg rebase --abort
hg glog  --template '{rev}: {desc}\n'

exit 0