Test that, when an hg push is interrupted and the remote side recieves SIGPIPE,

the remote hg is able to successfully roll back the transaction.

  $ hg init -q remote

  $ hg clone -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" -q ssh://user@dummy/`pwd`/remote local

  $ check_for_abandoned_transaction() {

  >     [ -f $TESTTMP/remote/.hg/store/journal ] && echo "Abandoned transaction!"

  > }

  $ pidfile=`pwd`/pidfile

  $ >$pidfile

  $ script() {

  >     cat >"$1"

  >     chmod +x "$1"

  > }

On the remote end, run hg, piping stdout and stderr through processes that we

know the PIDs of. We will later kill these to simulate an ssh client

disconnecting.

  $ killable_pipe=`pwd`/killable_pipe.sh

  $ script $killable_pipe <<EOF

  > echo \$\$ >> $pidfile

  > exec cat

  > EOF

  $ remotecmd=`pwd`/remotecmd.sh

  $ script $remotecmd <<EOF

  > hg "\$@" 1> >($killable_pipe) 2> >($killable_pipe >&2)

  > EOF

In the pretxnchangegroup hook, kill the PIDs recorded above to simulate ssh

disconnecting. Then exit nonzero, to force a transaction rollback.

  $ hook_script=`pwd`/pretxnchangegroup.sh

  $ script $hook_script <<EOF

  > for pid in \$(cat $pidfile) ; do

  >   kill \$pid

  >   while kill -0 \$pid 2>/dev/null ; do

  >     sleep 0.1

  >   done

  > done

  > exit 1

  > EOF

  $ cat >remote/.hg/hgrc <<EOF

  > [hooks]

  > pretxnchangegroup.break-things=$hook_script

  > EOF

  $ cd local

  $ echo foo > foo ; hg commit -qAm "commit"

  $ hg push -q -e "\"$PYTHON\" \"$TESTDIR/dummyssh\"" --remotecmd $remotecmd 2>&1 | grep -v $killable_pipe

  abort: stream ended unexpectedly (got 0 bytes, expected 4)

  $ check_for_abandoned_transaction

  [1]