view tests/test-strip-cross @ 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

# test stripping of filelogs where the linkrev doesn't always increase

echo '[extensions]' >> $HGRCPATH
echo 'hgext.mq =' >> $HGRCPATH

hg init orig
cd orig

hidefilename()
{
    sed -e 's/saving bundle to .*strip-backup/saving bundle to strip-backup/'
}

commit()
{
    hg up -qC null
    count=1
    for i in "$@"; do
	for f in $i; do
	    echo $count > $f
	done
	count=`expr $count + 1`
    done
    hg commit -qAm "$*"
}

# 2 1 0 2 0 1 2
commit '201 210'

commit '102 120' '210'

commit '021'

commit '201' '021 120'

commit '012 021' '102 201' '120 210'

commit 'manifest-file'

commit '102 120' '012 210' '021 201'

commit '201 210' '021 120' '012 102'

HGUSER=another-user; export HGUSER
commit 'manifest-file'

commit '012' 'manifest-file'

cd ..
hg clone -q -U -r -1 -r -2 -r -3 -r -4 -r -6 orig crossed

for i in crossed/.hg/store/00manifest.i crossed/.hg/store/data/*.i; do
    echo $i
    hg debugindex $i
    echo
done

for i in 0 1 2 3 4; do
    hg clone -q -U --pull crossed $i
    echo "% Trying to strip revision $i"
    hg --cwd $i strip $i 2>&1 | hidefilename
    echo "% Verifying"
    hg --cwd $i verify
    echo
done