Mercurial > hg
view tests/test-transaction-rollback-on-sigpipe.t @ 47017:da4e6d7a8fdd
help: add topic about evolution, based on text from evolve extension
I've taken the text produced by `hg help evolution` when the evolve
extension is enabled and made that available by the same command with
just hg core. Changes I've made:
* Added "(EXPERIMENTAL)" to the title. (That doesn't hide the topic
from `hg help`, though.)
* Replaced old-style `experimental.evolution=<names>` config by
new-style `experimental.evolution.<name>=true`.
* Replaces a "obsolete markers" by "obsolescence markers".
* Removed most content from "Current feature status".
When the evolve extension is enabled, its help text takes precedence.
Differential Revision: https://phab.mercurial-scm.org/D10516
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Tue, 27 Apr 2021 14:59:45 -0700 |
parents | b713e4cae2d7 |
children | 77e73827a02d |
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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 > #!/bin/bash > echo \$\$ >> $pidfile > exec cat > EOF $ remotecmd=`pwd`/remotecmd.sh $ script $remotecmd <<EOF > #!/bin/bash > hg "\$@" 1> >($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 > #!/bin/bash > 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]