tests/test-mq-caches

make mq play nicely with the branch cache

- if no patches are applied, don't do anything different

- if the cache includes valid data from one of the patch revisions,
  use the cache, but don't save anything new

- if the cache has data from before the patch revisions only,
  save what the list of branches would be without the patch revisions

#!/bin/sh

echo '[extensions]' >> $HGRCPATH
echo 'hgext.mq=' >> $HGRCPATH

show_branch_cache()
{
    branches=.hg/branches.cache
    hg log -r tip --template 'tip: #rev#\n'
    if [ -f $branches ]; then
	sort $branches
    else
	echo No $branches
    fi
    if [ "$1" = 1 ]; then
	for b in foo bar; do
	    hg log -r $b --template "branch $b: "'#rev#\n'
	done
    fi
}

hg init a
cd a
hg qinit -c

echo '# mq patch on an empty repo'
hg qnew p1
show_branch_cache

echo > pfile
hg add pfile
hg qrefresh -m 'patch 1'
show_branch_cache

echo
echo '# some regular revisions'
hg qpop
echo foo > foo
hg add foo
echo foo > .hg/branch
hg ci -m 'branch foo' -d '1000000 0'

echo bar > bar
hg add bar
echo bar > .hg/branch
hg ci -m 'branch bar' -d '1000000 0'
show_branch_cache

echo
echo '# add some mq patches'
hg qpush
show_branch_cache

hg qnew p2
echo foo > .hg/branch
echo foo2 >> foo
hg qrefresh -m 'patch 2'
show_branch_cache 1

echo
echo '# removing the cache'
rm -f .hg/branches.cache
show_branch_cache 1

echo
echo '# importing rev 1 (the cache now ends in one of the patches)'
hg qimport -r 1 -n p0
show_branch_cache 1
hg log -r qbase --template 'qbase: #rev#\n'

echo
echo '# detect an invalid cache'
hg qpop -a
hg qpush -a
show_branch_cache