view tests/test-pending.t @ 13857:ba1f98f877ec

subrepo: process merge substate in sorted order in submerge()

This ensures that subrepositories are pulled in a well defined
order when cloning the parent repository.

BEFORE:

  $ hg clone http://hg.gerg.ca/allextensions
  destination directory: allextensions
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 10 changesets with 20 changes to 6 files
  updating to branch default
  pulling subrepo caseguard from http://bitbucket.org/alexandru/caseguard
  real URL is https://bitbucket.org/alexandru/caseguard
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 81 changesets with 100 changes to 13 files
  pulling subrepo hg-prompt from http://bitbucket.org/sjl/hg-prompt
  real URL is https://bitbucket.org/sjl/hg-prompt
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 114 changesets with 176 changes to 35 files
  pulling subrepo hgpaste from http://bitbucket.org/birkenfeld/hgpaste
  real URL is https://bitbucket.org/birkenfeld/hgpaste
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 18 changesets with 18 changes to 2 files
  ...

AFTER:

  $ hg clone http://hg.gerg.ca/allextensions
  destination directory: allextensions
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 10 changesets with 20 changes to 6 files
  updating to branch default
  pulling subrepo Artemis from http://hg.mrzv.org/Artemis
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 55 changesets with 108 changes to 47 files
  ...

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
  > #! /bin/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
  $ chmod +x reject.sh

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 = $d/reject.sh
  > EOF

  $ dotest
  push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
  hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
  transaction abort!
  rollback completed
  abort: pretxnchangegroup hook exited with status 1
  pull 0000000000000000000000000000000000000000