tests/test-empty.t

commit: move sorting of added and removed files list to lower level

localrepo.commitctx() has lists of all changed files, as well as lists
of added and removed files. The list of all files is unsorted and
changelog.add() will sort it. Let's also sort the lists of added and
removed files at a lower level (manifestrevlog.add()) for
consistency. It also seems safer to do it there, just before we write
them to the store. That way other callers won't be able to create
invalid commits (or whatever the consequence is) by passing in
unsorted lists. Also, alternative storages may not care that the lists
are sorted. I don't think this will be a performance problem (someone
should have fixed the sorting in changelog.add() if it were).

Differential Revision: https://phab.mercurial-scm.org/D6390

Create an empty repo:

  $ hg init a
  $ cd a

Try some commands:

  $ hg log
  $ hg grep wah
  [1]
  $ hg manifest
  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
  checked 0 changesets with 0 changes to 0 files

Check the basic files created:

  $ ls .hg
  00changelog.i
  cache
  requires
  store
  wcache

Should be empty:

  $ ls .hg/store

Poke at a clone:

  $ cd ..
  $ hg clone a b
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd b
  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
  checked 0 changesets with 0 changes to 0 files
  $ ls .hg
  00changelog.i
  hgrc
  requires
  store

Should be empty:

  $ ls .hg/store

  $ cd ..