stream-clone: add a explicit test for format change during stream clone
They are different kind of requirements, the one which impact the data storage
and are relevant to the files being streamed and the one which does not. For
example some requirements are only relevant to the working copy, like sparse, or
dirstate-v2.
Since they are irrelevant to the content being streamed, they do not prevent the
receiving side to use streaming clone and mercurial skip adverting them over
the wire and, ideally, within the bundle.
In addition, this let the client decide to use whichever format it desire for
the part that does not affect the store itself. So the configuration related to
these format are used as normal when doing a streaming clone.
In practice, the feature was not really tested and is badly broken with bundle-2,
since the requirements are not filtered out from the stream bundle.
So we start with adding simple tests as a good base before the fix and adjust
the feature.
Differential Revision: https://phab.mercurial-scm.org/D12029
#require serve
$ hg init server
$ hg serve -R server -p $HGPORT -d --pid-file=hg1.pid -E ../error.log
$ cat hg1.pid >> $DAEMON_PIDS
Check basic fetching
$ hg debugdownload "http://localhost:$HGPORT/?cmd=lookup&key=tip"
1 0000000000000000000000000000000000000000
$ hg debugdownload -o null.txt "http://localhost:$HGPORT/?cmd=lookup&key=null"
$ cat null.txt
1 0000000000000000000000000000000000000000
Check the request is made from the usual Mercurial logic
(rev details, give different content if the request has a Mercurial user agent)
$ get-with-headers.py --headeronly "localhost:$HGPORT" "rev/tip" content-type
200 Script output follows
content-type: text/html; charset=ascii
$ hg debugdownload "http://localhost:$HGPORT/rev/tip"
# HG changeset patch
# User
# Date 0 0
# Node ID 0000000000000000000000000000000000000000
Check other kind of compatible url
$ hg debugdownload ./null.txt
1 0000000000000000000000000000000000000000
$ cat ../error.log
Test largefile URL
------------------
$ cat << EOF >> $HGRCPATH
> [extensions]
> largefiles=
> EOF
$ killdaemons.py
$ rm -f error.log hg1.pid
$ hg serve -R server -p $HGPORT -d --pid-file=hg1.pid -E error.log
$ cat hg1.pid >> $DAEMON_PIDS
$ hg -R server debuglfput null.txt
a57b57b39ee4dc3da1e03526596007f480ecdbe8
$ hg --traceback debugdownload "largefile://a57b57b39ee4dc3da1e03526596007f480ecdbe8" --config paths.default=http://localhost:$HGPORT/
1 0000000000000000000000000000000000000000
from within a repository
$ hg clone http://localhost:$HGPORT/ client
no changes found
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd client
$ hg path
default = http://localhost:$HGPORT/
$ hg debugdownload "largefile://a57b57b39ee4dc3da1e03526596007f480ecdbe8"
1 0000000000000000000000000000000000000000
$ cd ..
$ cat error.log