view tests/test-convert-bzr-ghosts @ 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

. "$TESTDIR/bzr-definitions"

cat > ghostcreator.py <<EOF
import sys
from bzrlib import workingtree
wt = workingtree.WorkingTree.open('.')

message, ghostrev = sys.argv[1:]
wt.set_parent_ids(wt.get_parent_ids() + [ghostrev])
wt.commit(message)
EOF

echo % ghost revisions
mkdir test-ghost-revisions
cd test-ghost-revisions
bzr init -q source
cd source
echo content > somefile
bzr add -q somefile
bzr commit -q -m 'Initial layout setup'
echo morecontent >> somefile
python ../../ghostcreator.py 'Commit with ghost revision' ghostrev
cd ..
hg convert source source-hg
glog -R source-hg