view tests/test-symlink-basic @ 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" symlink || exit 80

hg init a
cd a
ln -s nothing dangling
hg commit -m 'commit symlink without adding' dangling
hg add dangling
hg commit -m 'add symlink'

hg tip -v
hg manifest --debug
echo '% rev 0:'
$TESTDIR/readlink.py dangling

rm dangling
ln -s void dangling
hg commit -m 'change symlink'
echo '% rev 1:'
$TESTDIR/readlink.py dangling

echo '% modifying link'
rm dangling
ln -s empty dangling
$TESTDIR/readlink.py dangling

echo '% reverting to rev 0:'
hg revert -r 0 -a
$TESTDIR/readlink.py dangling

echo '% backups:'
$TESTDIR/readlink.py *.orig

rm *.orig
hg up -C
echo '% copies'
hg cp -v dangling dangling2
hg st -Cmard
$TESTDIR/readlink.py dangling dangling2

echo '% issue995'
hg up -C
mkdir dir
ln -s dir dirlink
hg ci -qAm 'add dirlink'
mkdir newdir
mv dir newdir/dir
mv dirlink newdir/dirlink
hg mv -A dirlink newdir/dirlink