tests/test-revert.t

branchmap: allow to use cache of subset

Filtered repository are *subset* of unfiltered repository. This means that a
filtered branchmap could be use to compute the unfiltered version.

And filtered version happen to be subset of each other:
- "all() - unserved()" is a subset of "all() - hidden()"
- "all() - hidden()" is a subset of "all()"

This means that branchmap with "unfiltered" filter can be used as a base for
"hidden" branchmap that itself could be used as a base for unfiltered
branchmap.

   unserved < hidden < None

This changeset implements this mechanism. If the on disk branchcache is not valid
we use the branchcache of the nearest subset as base instead of computing it from
scratch. Such fallback can be cascaded multiple time is necessary.

Note that both "hidden" and "unserved" set are a bit volatile. We will add more
stable filtering in next changesets.

This changeset enables collaboration between no filtering and "unserved"
filtering. Fixing performance regression introduced by 47f00b0de337

  $ hg init repo
  $ cd repo
  $ echo 123 > a
  $ echo 123 > c
  $ echo 123 > e
  $ hg add a c e
  $ hg commit -m "first" a c e

nothing changed

  $ hg revert
  abort: no files or directories specified
  (use --all to revert all files)
  [255]
  $ hg revert --all

  $ echo 123 > b

should show b unknown

  $ hg status
  ? b
  $ echo 12 > c

should show b unknown and c modified

  $ hg status
  M c
  ? b
  $ hg add b

should show b added and c modified

  $ hg status
  M c
  A b
  $ hg rm a

should show a removed, b added and c modified

  $ hg status
  M c
  A b
  R a
  $ hg revert a

should show b added, copy saved, and c modified

  $ hg status
  M c
  A b
  $ hg revert b

should show b unknown, and c modified

  $ hg status
  M c
  ? b
  $ hg revert --no-backup c

should show unknown: b

  $ hg status
  ? b
  $ hg add b

should show b added

  $ hg status b
  A b
  $ rm b

should show b deleted

  $ hg status b
  ! b
  $ hg revert -v b
  forgetting b

should not find b

  $ hg status b
  b: * (glob)

should show a c e

  $ ls
  a
  c
  e

should verbosely save backup to e.orig

  $ echo z > e
  $ hg revert --all -v
  saving current version of e as e.orig
  reverting e

should say no changes needed

  $ hg revert a
  no changes needed to a

should say file not managed

  $ echo q > q
  $ hg revert q
  file not managed: q
  $ rm q

should say file not found

  $ hg revert notfound
  notfound: no such file in rev 334a9e57682c
  $ touch d
  $ hg add d
  $ hg rm a
  $ hg commit -m "second"
  $ echo z > z
  $ hg add z
  $ hg st
  A z
  ? e.orig

should add a, remove d, forget z

  $ hg revert --all -r0
  adding a
  removing d
  forgetting z

should forget a, undelete d

  $ hg revert --all -rtip
  forgetting a
  undeleting d
  $ rm a *.orig

should silently add a

  $ hg revert -r0 a
  $ hg st a
  A a
  $ hg rm d
  $ hg st d
  R d

should silently keep d removed

  $ hg revert -r0 d
  $ hg st d
  R d

  $ hg update -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
#if execbit
  $ chmod +x c
  $ hg revert --all
  reverting c

should print non-executable

  $ test -x c || echo non-executable
  non-executable

  $ chmod +x c
  $ hg commit -m exe

  $ chmod -x c
  $ hg revert --all
  reverting c

should print executable

  $ test -x c && echo executable
  executable
#endif

  $ cd ..


Issue241: update and revert produces inconsistent repositories

  $ hg init a
  $ cd a
  $ echo a >> a
  $ hg commit -A -d '1 0' -m a
  adding a
  $ echo a >> a
  $ hg commit -d '2 0' -m a
  $ hg update 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ mkdir b
  $ echo b > b/b

should fail - no arguments

  $ hg revert -rtip
  abort: no files or directories specified
  (use --all to revert all files, or 'hg update 1' to update)
  [255]

should succeed

  $ hg revert --all -rtip
  reverting a


Issue332: confusing message when reverting directory

  $ hg ci -A -m b
  adding b/b
  created new head
  $ echo foobar > b/b
  $ mkdir newdir
  $ echo foo > newdir/newfile
  $ hg add newdir/newfile
  $ hg revert b newdir
  reverting b/b (glob)
  forgetting newdir/newfile (glob)
  $ echo foobar > b/b
  $ hg revert .
  reverting b/b (glob)


reverting a rename target should revert the source

  $ hg mv a newa
  $ hg revert newa
  $ hg st a newa
  ? newa

  $ cd ..

  $ hg init ignored
  $ cd ignored
  $ echo '^ignored$' > .hgignore
  $ echo '^ignoreddir$' >> .hgignore
  $ echo '^removed$' >> .hgignore

  $ mkdir ignoreddir
  $ touch ignoreddir/file
  $ touch ignoreddir/removed
  $ touch ignored
  $ touch removed

4 ignored files (we will add/commit everything)

  $ hg st -A -X .hgignore
  I ignored
  I ignoreddir/file
  I ignoreddir/removed
  I removed
  $ hg ci -qAm 'add files' ignored ignoreddir/file ignoreddir/removed removed

  $ echo >> ignored
  $ echo >> ignoreddir/file
  $ hg rm removed ignoreddir/removed

should revert ignored* and undelete *removed

  $ hg revert -a --no-backup
  reverting ignored
  reverting ignoreddir/file (glob)
  undeleting ignoreddir/removed (glob)
  undeleting removed
  $ hg st -mardi

  $ hg up -qC
  $ echo >> ignored
  $ hg rm removed

should silently revert the named files

  $ hg revert --no-backup ignored removed
  $ hg st -mardi

  $ cd ..