Mercurial > hg
view tests/test-pending.t @ 25881:9de443515f1d stable
help: scripting help topic
There are a lot of non-human consumers of Mercurial. And the challenges
and considerations for machines consuming Mercurial is significantly
different from what humans face.
I think there are enough special considerations around how machines
consume Mercurial that a dedicated help topic is warranted. I concede
the audience for this topic is probably small compared to the general
audience. However, lots of normal Mercurial users do things like create
one-off shell scripts for common workflows that I think this is useful
enough to be in the install (as opposed to, say, a wiki page - which
most users will likely never find).
This text is by no means perfect. But you have to start somewhere. I
think I did cover the important parts, though.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sat, 18 Jul 2015 17:10:28 -0700 |
parents | b2c1ff96c1e1 |
children | f14879f61cd8 |
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Verify that pending changesets are seen by pretxn* hooks but not by other processes that access the destination repo while the hooks are running. The hooks (python and external) both reject changesets after some think time, during which another process runs pull. Each hook creates a file ('notify') to indicate to the controlling process that it is running; the process removes the file to indicate the hook can terminate. init env vars $ d=`pwd` $ maxwait=20 utility to run the test - start a push in the background and run pull $ dotest() { > rm -f notify > printf 'push '; hg -R child-push tip --template '{node}\n' > hg -R child-push -q push > push.out 2>&1 & > > # wait for hook to create the notify file > i=$maxwait > while [ ! -f notify -a $i != 0 ]; do > sleep 1 > i=`expr $i - 1` > done > > # run pull > hg -R child-pull -q pull > rc=$? > > # tell hook to finish; notify should exist. > rm notify > wait > > cat push.out > printf 'pull '; hg -R child-pull tip --template '{node}\n' > return $rc > } python hook $ cat <<EOF > reject.py > import os, time > from mercurial import ui, localrepo > def rejecthook(ui, repo, hooktype, node, **opts): > ui.write('hook %s\\n' % repo['tip'].hex()) > # create the notify file so caller knows we're running > fpath = os.path.join('$d', 'notify') > f = open(fpath, 'w') > f.close() > # wait for ack - caller should delete the notify file > i = $maxwait > while os.path.exists(fpath) and i > 0: > time.sleep(1) > i -= 1 > return True # reject the changesets > EOF external hook $ cat <<EOF > reject.sh > printf 'hook '; hg tip --template '{node}\\n' > # create the notify file so caller knows we're running > fpath=$d/notify > touch \$fpath > # wait for ack - caller should delete the notify file > i=$maxwait > while [ -f \$fpath -a \$i != 0 ]; do > sleep 1 > i=\`expr \$i - 1\` > done > exit 1 # reject the changesets > EOF create repos $ hg init parent $ hg clone -q parent child-push $ hg clone -q parent child-pull $ echo a > child-push/a $ hg -R child-push add child-push/a $ hg -R child-push commit -m a -d '1000000 0' test python hook $ cat <<EOF > parent/.hg/hgrc > [extensions] > reject = $d/reject.py > [hooks] > pretxnchangegroup = python:reject.rejecthook > EOF $ dotest push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b transaction abort! rollback completed abort: pretxnchangegroup hook failed pull 0000000000000000000000000000000000000000 test external hook $ cat <<EOF > parent/.hg/hgrc > [hooks] > pretxnchangegroup = sh $d/reject.sh > EOF $ dotest push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b transaction abort! rollback completed abort: pretxnchangegroup hook exited with status 1 pull 0000000000000000000000000000000000000000 Test that pending on transaction without changegroup see the normal changegroup( (issue4609) $ cat <<EOF > parent/.hg/hgrc > [hooks] > pretxnchangegroup= > pretxnclose = hg tip -T "tip: {node|short}\n" > [phases] > publishing=False > EOF setup $ cd parent $ echo a > a $ hg add a $ hg commit -m a tip: cb9a9f314b8b actual test $ hg phase --public . tip: cb9a9f314b8b