test: add a push race case where each client replaces a different head
We check case where the raced push replace one head while the racing push
replaces another unrelated one.
That second test also make sure we synchronise all repositories to the same
state between tests. That will help us when allowing some sort of concurrent
pushes.
# Blacklist for a full testsuite run with fsmonitor enabled.
# Use with
# run-tests --blacklist=blacklists/fsmonitor \
# --extra-config="extensions.fsmonitor="
# The following tests all fail because they either use extensions that conflict
# with fsmonitor, use subrepositories, or don't anticipate the extra file in
# the .hg directory that fsmonitor adds.
test-basic.t
test-blackbox.t
test-check-commit.t
test-commandserver.t
test-copy.t
test-debugextensions.t
test-eol-add.t
test-eol-clone.t
test-eol-hook.t
test-eol-patch.t
test-eol-tag.t
test-eol-update.t
test-eol.t
test-eolfilename.t
test-extension.t
test-fncache.t
test-hardlinks.t
test-help.t
test-inherit-mode.t
test-issue3084.t
test-largefiles-cache.t
test-largefiles-misc.t
test-largefiles-small-disk.t
test-largefiles-update.t
test-largefiles-wireproto.t
test-largefiles.t
test-lfconvert.t
test-merge-tools.t
test-nested-repo.t
test-permissions.t
test-push-warn.t
test-subrepo-deep-nested-change.t
test-subrepo-recursion.t
test-subrepo.t
test-tags.t
# The following tests remain enabled; they fail *too*, but only because they
# occasionally use blacklisted extensions and don't anticipate the warning
# generated.
#test-log.t
#test-hook.t
#test-rename.t
#test-histedit-fold.t
#test-fileset-generated.t
#test-init.t