$ 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

Introduce some changes and revert them

--------------------------------------

  $ echo 123 > b

  $ hg status

  ? b

  $ echo 12 > c

  $ hg status

  M c

  ? b

  $ hg add b

  $ hg status

  M c

  A b

  $ hg rm a

  $ hg status

  M c

  A b

  R a

revert removal of a file

  $ hg revert a

  $ hg status

  M c

  A b

revert addition of a file

  $ hg revert b

  $ hg status

  M c

  ? b

revert modification of a file (--no-backup)

  $ hg revert --no-backup c

  $ hg status

  ? b

revert deletion (! status) of a added file

------------------------------------------

  $ hg add b

  $ hg status b

  A b

  $ rm b

  $ hg status b

  ! b

  $ hg revert -v b

  forgetting b

  $ hg status b

  b: * (glob)

  $ ls

  a

  c

  e

Test creation of backup (.orig) files

-------------------------------------

  $ echo z > e

  $ hg revert --all -v

  saving current version of e as e.orig

  reverting e

revert on clean file (no change)

--------------------------------

  $ hg revert a

  no changes needed to a

revert on an untracked file

---------------------------

  $ echo q > q

  $ hg revert q

  file not managed: q

  $ rm q

revert on file that does not exists

-----------------------------------

  $ 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

revert to another revision (--rev)

----------------------------------

  $ hg revert --all -r0

  adding a

  removing d

  forgetting z

revert explicitly to parent (--rev)

-----------------------------------

  $ hg revert --all -rtip

  forgetting a

  undeleting d

  $ rm a *.orig

revert to another revision (--rev) and exact match

--------------------------------------------------

exact match are more silent

  $ hg revert -r0 a

  $ hg st a

  A a

  $ hg rm d

  $ hg st d

  R d

  $ hg revert -r0 d

  $ hg st d

  R d

  $ hg update -C

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

revert of exec bit

------------------

#if execbit

  $ chmod +x c

  $ hg revert --all

  reverting c

  $ test -x c || echo non-executable

  non-executable

  $ chmod +x c

  $ hg commit -m exe

  $ chmod -x c

  $ hg revert --all

  reverting c

  $ 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

call `hg revert` with no file specified

---------------------------------------

  $ hg revert -rtip

  abort: no files or directories specified

  (use --all to revert all files, or 'hg update 1' to update)

  [255]

call `hg revert` with --all

---------------------------

  $ 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

Reverting copy (issue3920)

--------------------------

someone set up us the copies

  $ rm .hgignore

  $ hg update -C

  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg mv ignored allyour

  $ hg copy removed base

  $ hg commit -m rename

copies and renames, you have no chance to survive make your time (issue3920)

  $ hg update '.^'

  1 files updated, 0 files merged, 2 files removed, 0 files unresolved

  $ hg revert -rtip -a

  adding allyour

  adding base

  removing ignored

  $ hg status -C

  A allyour

    ignored

  A base

    removed

  R ignored

Test revert of a file added by one side of the merge

====================================================

remove any pending change

  $ hg revert --all

  forgetting allyour

  forgetting base

  undeleting ignored

  $ hg purge --all --config extensions.purge=

Adds a new commit

  $ echo foo > newadd

  $ hg add newadd

  $ hg commit -m 'other adds'

  created new head

merge it with the other head

  $ hg merge # merge 1 into 2

  2 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg summary

  parent: 2:b8ec310b2d4e tip

   other adds

  parent: 1:f6180deb8fbe 

   rename

  branch: default

  commit: 2 modified, 1 removed (merge)

  update: (current)

clarifies who added what

  $ hg status

  M allyour

  M base

  R ignored

  $ hg status --change 'p1()'

  A newadd

  $ hg status --change 'p2()'

  A allyour

  A base

  R ignored

revert file added by p1() to p1() state

-----------------------------------------

  $ hg revert -r 'p1()' 'glob:newad?'

  $ hg status

  M allyour

  M base

  R ignored

revert file added by p1() to p2() state

------------------------------------------

  $ hg revert -r 'p2()' 'glob:newad?'

  removing newadd

  $ hg status

  M allyour

  M base

  R ignored

  R newadd

revert file added by p2() to p2() state

------------------------------------------

  $ hg revert -r 'p2()' 'glob:allyou?'

  $ hg status

  M allyour

  M base

  R ignored

  R newadd

revert file added by p2() to p1() state

------------------------------------------

  $ hg revert -r 'p1()' 'glob:allyou?'

  removing allyour

  $ hg status

  M base

  R allyour

  R ignored

  R newadd

Systematic behavior validation of most possible cases

=====================================================

This section tests most of the possible combinations of working directory

changes and inter-revision changes. The number of possible cases is significant

but they all have a slighly different handling. So this section commits to

generating and testing all of them to allow safe refactoring of the revert code.

A python script is used to generate a file history for each combination of

changes between, on one side the working directory and its parent and on

the other side, changes between a revert target (--rev) and working directory