view tests/test-subrepo-svn @ 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/hghave" svn || exit 80

escapedwd=$(pwd | \
            python -c \
            "import sys,urllib; print urllib.pathname2url(sys.stdin.read().strip())"
           )
filterpath="sed s+$escapedwd+/root+"

echo % create subversion repo

SVNREPO="file://$escapedwd/svn-repo"
WCROOT="$(pwd)/svn-wc"
svnadmin create svn-repo
svn co $SVNREPO svn-wc
cd svn-wc
echo alpha > alpha
svn add alpha
svn ci -m 'Add alpha'
cd ..

echo % create hg repo

rm -rf sub
mkdir sub
cd sub
hg init t
cd t

echo % first revision, no sub
echo a > a
hg ci -Am0

echo % add first svn sub
echo "s = [svn]$SVNREPO" >> .hgsub
svn co --quiet $SVNREPO s
hg add .hgsub
hg ci -m1
echo % debugsub
hg debugsub | $filterpath

echo
echo % change file in svn and hg, commit
echo a >> a
echo alpha >> s/alpha
hg commit -m 'Message!'
hg debugsub | $filterpath

echo
echo a > s/a
echo % should be empty despite change to s/a
hg st

echo
echo % add a commit from svn
pushd "$WCROOT" > /dev/null
svn up
echo xyz >> alpha
svn ci -m 'amend a from svn'
popd > /dev/null
echo % this commit from hg will fail
echo zzz >> s/alpha
hg ci -m 'amend alpha from hg'

echo
echo % clone
cd ..
hg clone t tc
cd tc
echo % debugsub in clone
hg debugsub | $filterpath