test-mq-caches: look up a revision that does not exist to force cache creation

tests/test-mq-caches

@@ -1,76 +1,78
 #!/bin/sh
 
 echo '[extensions]' >> $HGRCPATH
 echo 'hgext.mq=' >> $HGRCPATH
 
 show_branch_cache()
 {
     branches=.hg/branches.cache
+    # force cache (re)generation
+    hg log -r does-not-exist 2> /dev/null
     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