tests/test-convert-baz

filectx: fix cmp() of file starting with '\1\n'

If file data starts with '\1\n', it will be escaped in the revlog to
create an empty metadata block, thus adding four bytes to the size in
the revlog size index. There's no way to detect that this has happened
in filelog.size() faster than decompressing each revision [1].

For filectx.cmp(), we have the size of the file in the working directory
available. If it differs by exactly four bytes, it may be this case, so
do a full comparison.

 [1]: http://markmail.org/message/5akdbmmqx7vq2fsg

#!/bin/sh

"$TESTDIR/hghave" baz || exit 80

baz my-id "mercurial <[e-mail]>"

echo "[extensions]" >> $HGRCPATH
echo "convert=" >> $HGRCPATH
echo 'graphlog =' >> $HGRCPATH

echo % create baz archive
baz make-archive baz@mercurial--convert hg-test-convert-baz

echo % initialize baz repo
mkdir baz-repo
cd baz-repo/
baz init-tree baz@mercurial--convert/baz--test--0
baz import

echo % create initial files
echo 'this is a file' > a
baz add a
mkdir src
baz add src
cd src
dd count=1 if=/dev/zero of=b > /dev/null 2> /dev/null
baz add b
# HACK: hide GNU tar-1.22 "tar: The --preserve option is deprecated, use --preserve-permissions --preserve-order instead"
baz commit -s "added a file, src and src/b (binary)" 2>&1 | grep -v '^tar'

echo % create link file and modify a
ln -s ../a a-link
baz add a-link
echo 'this a modification to a' >> ../a
baz commit -s "added link to a and modify a"

echo % create second link and modify b
ln -s ../a a-link-2
baz add a-link-2
dd count=1 seek=1 if=/dev/zero of=b > /dev/null 2> /dev/null
baz commit -s "added second link and modify b"

echo % b file to link and a-link-2 to regular file
rm -f a-link-2
echo 'this is now a regular file' > a-link-2
ln -sf ../a b
baz commit -s "file to link and link to file test"

echo % move a-link-2 file and src directory
cd ..
baz mv src/a-link-2 c
baz mv src test
baz commit -s "move and rename a-link-2 file and src directory"

echo % move and add the moved file again
echo e > e
baz add e
baz commit -s "add e"
baz mv e f
echo ee > e
baz add e
baz commit -s "move e and recreate it again"
cd ..

echo % converting baz repo to Mercurial
hg convert baz-repo baz-repo-hg

baz register-archive -d baz@mercurial--convert

glog()
{
    hg glog --template '{rev} "{desc|firstline}" files: {files}\n' "$@"
}

echo % show graph log
glog -R baz-repo-hg
hg up -q -R baz-repo-hg
hg -R baz-repo-hg manifest --debug
hg -R baz-repo-hg log -r 5 -r 7 -C --debug | grep copies