branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#require test-repo slow debhelper debdeps
$ . "$TESTDIR/helpers-testrepo.sh"
$ testrepohgenv
Ensure debuild doesn't run the testsuite, as that could get silly.
$ DEB_BUILD_OPTIONS=nocheck
$ export DEB_BUILD_OPTIONS
$ OUTPUTDIR=`pwd`
$ export OUTPUTDIR
$ cd "$TESTDIR"/..
$ make deb > $OUTPUTDIR/build.log 2>&1
$ cd $OUTPUTDIR
$ ls *.deb | grep -v 'dbg'
mercurial_*.deb (glob)
should have .so and .py
$ dpkg --contents mercurial_*.deb | grep -E '(localrepo|parsers)'
* ./usr/lib/python3/dist-packages/mercurial/cext/parsers*.so (glob)
* ./usr/lib/python3/dist-packages/mercurial/localrepo.py (glob)
* ./usr/lib/python3/dist-packages/mercurial/pure/parsers.py (glob)
should have zsh completions
$ dpkg --contents mercurial_*.deb | grep -E 'zsh.*[^/]$'
* ./usr/share/zsh/vendor-completions/_hg (glob)
should have chg
$ dpkg --contents mercurial_*.deb | grep -E 'chg$'
* ./usr/bin/chg (glob)
chg should come with a man page
$ dpkg --contents mercurial_*.deb | grep -E 'man.*chg'
* ./usr/share/man/man1/chg.1.gz (glob)