tests/test-hup.t

backout: avoid redundant message examination

Before this patch, "hg backout" examines "--message" and "--logfile"
options explicitly.

But this examination is redundant, because "commitfunc()" can receive
the result of same examination by "cmdutil.logmessage()" in
"cmdutil.commit()" through "message" argument.

This patch avoids redundant message examination by "message"
examination in "commitfunc()".

Test hangup signal in the middle of transaction

  $ "$TESTDIR/hghave" serve fifo || exit 80
  $ hg init
  $ mkfifo p
  $ hg serve --stdio < p 1>out 2>&1 &
  $ P=$!

Do test while holding fifo open

  $ (
  > echo lock
  > echo addchangegroup
  > start=`date +%s`
  > # 10 second seems much enough to let the server catch up
  > deadline=`expr $start + 10`
  > while [ ! -s .hg/store/journal ]; do
  >     sleep 0;
  >     if [ `date +%s` -gt $deadline ]; then
  >         echo "transaction did not start after 10 seconds" >&2;
  >         exit 1;
  >     fi
  > done
  > kill -HUP $P
  > ) > p

  $ wait
  $ cat out
  0
  0
  adding changesets
  transaction abort!
  rollback completed
  killed!

  $ echo .hg/* .hg/store/*
  .hg/00changelog.i .hg/journal.bookmarks .hg/journal.branch .hg/journal.desc .hg/journal.dirstate .hg/requires .hg/store .hg/store/00changelog.i .hg/store/00changelog.i.a .hg/store/journal.phaseroots