annotate tests/test-evolve-content-divergent-stack.t @ 5572:d7d954b6d518

evolve: remove swapping nodes logic while resolving divergence

Before this patch, while solving content-divergence if one of the
divergent cset need to relocate to resolution parent we used to set that
cset to "other" side; so it was like we are always going to relocate "other"
side which made us to swap the two if "divergent" cset need to relocate.

Above mentioned solution for relocating cset was not good and led us to incorrect
output in some cases.

So this patch, simplify the logic and remove the swapping thing and clearly depend
on resolution parent to check if any of the divergent cset needs to relocate.
This also means that now in some cases if both the divergent csets needs
to relocate, both will be relocated. Even before this patch, there are some cases
where both the divergent csets relocated but not in every case where it should
have.

Coming to the changes in test files:
1) changes in order of merging the two divergent csets is due to fact that
   now "divergent" and "other" are not swapped and hence "divergent" will be at
   local side and "other" will be at "other", which also results in change in
   the hash id for some cases.

2) extra changesets: which is the result of the fact that now we don't miss
   any case where both the divergent csets should be based on resolution parent
   before performing the merge -> which caught some cases and performed relocation,
   hence extra changesets. Although you can find that there is no changes in file
   content because of these relocation, but I remember loosing some data because
   of not relocating the "divergent", so why leave any risk out there by not
   relocating "other" to the resolution parent.

=================================================
Tests the resolution of content divergence: stack
=================================================

This file intend to cover case with stacks of divergent changesets

  $ cat >> $HGRCPATH <<EOF
  > [alias]
  > glog = log -GT "{rev}:{node|short} {desc|firstline}\n ({bookmarks}) [{branch}] {phase}"
  > [phases]
  > publish = False
  > [extensions]
  > strip =
  > rebase =
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

Resolving content-divergence of a stack with same parents
---------------------------------------------------------

  $ hg init stacktest
  $ cd stacktest
  $ echo ".*\.orig" > .hgignore
  $ hg add .hgignore
  $ hg ci -m "added hgignore"
  $ for ch in a b c d; do echo foo > $ch; hg add $ch; hg ci -qm "added "$ch; done;

  $ hg glog
  @  4:c41c793e0ef1 added d
  |   () [default] draft
  o  3:ca1b80f7960a added c
  |   () [default] draft
  o  2:b1661037fa25 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ cd ..
  $ hg init stack2
  $ cd stack2
  $ hg pull ../stacktest
  pulling from ../stacktest
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files
  new changesets 8fa14d15e168:c41c793e0ef1 (5 drafts)
  (run 'hg update' to get a working copy)
  $ hg glog
  o  4:c41c793e0ef1 added d
  |   () [default] draft
  o  3:ca1b80f7960a added c
  |   () [default] draft
  o  2:b1661037fa25 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg up c7586e2a9264
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo bar > a
  $ hg amend -m "watbar to a"
  3 new orphan changesets
  $ echo wat > a
  $ hg amend -m "watbar to a"
  $ hg evolve --all
  move:[2] added b
  atop:[6] watbar to a
  move:[3] added c
  move:[4] added d
  $ hg glog
  o  9:15c781f93cac added d
  |   () [default] draft
  o  8:9e5fb1d5b955 added c
  |   () [default] draft
  o  7:88516dccf68a added b
  |   () [default] draft
  @  6:82b74d5dc678 watbar to a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ cd ../stacktest
  $ hg up .^^^
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ echo wat > a
  $ hg amend -m "watbar to a"
  3 new orphan changesets
  $ hg evolve --all
  move:[2] added b
  atop:[5] watbar to a
  move:[3] added c
  move:[4] added d
  $ hg glog
  o  8:c72d2885eb51 added d
  |   () [default] draft
  o  7:3ce4be6d8e5e added c
  |   () [default] draft
  o  6:d5f148423c16 added b
  |   () [default] draft
  @  5:8e222f257bbf watbar to a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg pull ../stack2
  pulling from ../stack2
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 0 changes to 4 files (+1 heads)
  5 new obsolescence markers
  8 new content-divergent changesets
  new changesets 82b74d5dc678:15c781f93cac (4 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)

  $ hg glog
  *  12:15c781f93cac added d
  |   () [default] draft
  *  11:9e5fb1d5b955 added c
  |   () [default] draft
  *  10:88516dccf68a added b
  |   () [default] draft
  *  9:82b74d5dc678 watbar to a
  |   () [default] draft
  | *  8:c72d2885eb51 added d
  | |   () [default] draft
  | *  7:3ce4be6d8e5e added c
  | |   () [default] draft
  | *  6:d5f148423c16 added b
  | |   () [default] draft
  | @  5:8e222f257bbf watbar to a
  |/    () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --all --content-divergent
  merge:[5] watbar to a
  with: [9] watbar to a
  base: [1] added a
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[6] added b
  with: [10] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset d5f148423c16 on df93a529fa42
  rebasing "other" content-divergent changeset 88516dccf68a on df93a529fa42
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[7] added c
  with: [11] added c
  base: [3] added c
  rebasing "divergent" content-divergent changeset 3ce4be6d8e5e on aca5a88a1692
  rebasing "other" content-divergent changeset 9e5fb1d5b955 on aca5a88a1692
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[8] added d
  with: [12] added d
  base: [4] added d
  rebasing "divergent" content-divergent changeset c72d2885eb51 on 67e04919c9a4
  rebasing "other" content-divergent changeset 15c781f93cac on 67e04919c9a4
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at df93a529fa42

  $ hg glog
  o  22:e72164a86fb4 added d
  |   () [default] draft
  o  19:67e04919c9a4 added c
  |   () [default] draft
  o  16:aca5a88a1692 added b
  |   () [default] draft
  @  13:df93a529fa42 watbar to a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

Testing --continue case when relocating "divergent"
---------------------------------------------------
When no relocation is required for "other", but "divergent"
hit merge conflict in relocation. This test makes sure that
content of two divergent csets merged correctly after the
merge conflict.

  $ hg log -r "desc('added c')" -p
  changeset:   19:67e04919c9a4
  parent:      16:aca5a88a1692
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     added c
  
  diff -r aca5a88a1692 -r 67e04919c9a4 c
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +foo
  
  $ hg strip -r 17: --hidden
  saved backup bundle to $TESTTMP/stacktest/.hg/strip-backup/f1cd8f167491-3817ebd7-backup.hg
  4 new orphan changesets
  4 new content-divergent changesets
  $ hg glog
  o  16:aca5a88a1692 added b
  |   () [default] draft
  @  13:df93a529fa42 watbar to a
  |   () [default] draft
  | *  12:15c781f93cac added d
  | |   () [default] draft
  | *  11:9e5fb1d5b955 added c
  | |   () [default] draft
  | x  10:88516dccf68a added b
  | |   () [default] draft
  | x  9:82b74d5dc678 watbar to a
  |/    () [default] draft
  | *  8:c72d2885eb51 added d
  | |   () [default] draft
  | *  7:3ce4be6d8e5e added c
  | |   () [default] draft
  | x  6:d5f148423c16 added b
  | |   () [default] draft
  | x  5:8e222f257bbf watbar to a
  |/    () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft
  $ hg next
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [16] added b
  $ echo conflict > c
  $ hg amend -A
  adding c

add some changes on "other" side, to check later that merging performed correctly
  $ hg up -r 11
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo new_file > newfile
  $ hg amend -Am "added c and newfile"
  adding newfile
  $ hg glog
  @  18:2ecfb60af48a added c and newfile
  |   () [default] draft
  | o  17:5907cbc074a0 added b
  | |   () [default] draft
  | o  13:df93a529fa42 watbar to a
  | |   () [default] draft
  | | *  12:15c781f93cac added d
  | | |   () [default] draft
  +---x  11:9e5fb1d5b955 added c
  | |     () [default] draft
  x |  10:88516dccf68a added b
  | |   () [default] draft
  x |  9:82b74d5dc678 watbar to a
  |/    () [default] draft
  | *  8:c72d2885eb51 added d
  | |   () [default] draft
  | *  7:3ce4be6d8e5e added c
  | |   () [default] draft
  | x  6:d5f148423c16 added b
  | |   () [default] draft
  | x  5:8e222f257bbf watbar to a
  |/    () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent -r 7
  merge:[7] added c
  with: [18] added c and newfile
  base: [3] added c
  rebasing "divergent" content-divergent changeset 3ce4be6d8e5e on 5907cbc074a0
  merging c
  warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]
  $ echo c > c
  $ hg res -m
  (no more unresolved files)
  continue: hg evolve --continue

  $ hg evolve --continue
  evolving 7:3ce4be6d8e5e "added c"
  rebasing "other" content-divergent changeset 2ecfb60af48a on 5907cbc074a0
  merging c
  warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]
  $ hg diff
  diff -r 5907cbc074a0 c
  --- a/c	Thu Jan 01 00:00:00 1970 +0000
  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,5 @@
  +<<<<<<< destination: 5907cbc074a0 - test: added b
   conflict
  +=======
  +foo
  +>>>>>>> evolving:    2ecfb60af48a - test: added c and newfile
  diff -r 5907cbc074a0 newfile
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/newfile	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +new_file

  $ echo c > c
  $ hg res -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve -c
  evolving 18:2ecfb60af48a "added c and newfile"
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 7e8d59a0286a

  $ hg log -p -l1
  changeset:   21:7e8d59a0286a
  tag:         tip
  parent:      17:5907cbc074a0
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     added c and newfile
  
  diff -r 5907cbc074a0 -r 7e8d59a0286a c
  --- a/c	Thu Jan 01 00:00:00 1970 +0000
  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,1 @@
  -conflict
  +c
  diff -r 5907cbc074a0 -r 7e8d59a0286a newfile
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/newfile	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +new_file
  

Resolving content-divergence of a stack with different parents
---------------------------------------------------------

  $ cd ..
  $ hg init stackrepo1
  $ cd stackrepo1
  $ echo ".*\.orig" > .hgignore
  $ hg add .hgignore
  $ hg ci -m "added hgignore"

  $ for ch in a b c d;
  > do echo foo > $ch;
  > hg add $ch;
  > hg ci -qm "added "$ch;
  > done;

  $ hg glog
  @  4:c41c793e0ef1 added d
  |   () [default] draft
  o  3:ca1b80f7960a added c
  |   () [default] draft
  o  2:b1661037fa25 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ cd ..
  $ hg init stackrepo2
  $ cd stackrepo2
  $ hg pull ../stackrepo1
  pulling from ../stackrepo1
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files
  new changesets 8fa14d15e168:c41c793e0ef1 (5 drafts)
  (run 'hg update' to get a working copy)

  $ hg glog
  o  4:c41c793e0ef1 added d
  |   () [default] draft
  o  3:ca1b80f7960a added c
  |   () [default] draft
  o  2:b1661037fa25 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg up 8fa14d15e168
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo newfile > newfile
  $ hg ci -Am "add newfile"
  adding newfile
  created new head
  $ hg rebase -s c7586e2a9264 -d .
  rebasing 1:c7586e2a9264 "added a"
  rebasing 2:b1661037fa25 "added b"
  rebasing 3:ca1b80f7960a "added c"
  rebasing 4:c41c793e0ef1 "added d"

  $ hg glog
  o  9:d45f050514c2 added d
  |   () [default] draft
  o  8:8ed612937375 added c
  |   () [default] draft
  o  7:6eb54b5af3fb added b
  |   () [default] draft
  o  6:c04ff147ef79 added a
  |   () [default] draft
  @  5:2228e3b74514 add newfile
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ cd ../stackrepo1
  $ hg up .^^^
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ echo wat > a
  $ hg amend -m "watbar to a"
  3 new orphan changesets
  $ hg evolve --all
  move:[2] added b
  atop:[5] watbar to a
  move:[3] added c
  move:[4] added d

  $ hg glog
  o  8:c72d2885eb51 added d
  |   () [default] draft
  o  7:3ce4be6d8e5e added c
  |   () [default] draft
  o  6:d5f148423c16 added b
  |   () [default] draft
  @  5:8e222f257bbf watbar to a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg pull ../stackrepo2
  pulling from ../stackrepo2
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 1 changes to 5 files (+1 heads)
  4 new obsolescence markers
  8 new content-divergent changesets
  new changesets 2228e3b74514:d45f050514c2 (5 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)

  $ hg glog
  *  13:d45f050514c2 added d
  |   () [default] draft
  *  12:8ed612937375 added c
  |   () [default] draft
  *  11:6eb54b5af3fb added b
  |   () [default] draft
  *  10:c04ff147ef79 added a
  |   () [default] draft
  o  9:2228e3b74514 add newfile
  |   () [default] draft
  | *  8:c72d2885eb51 added d
  | |   () [default] draft
  | *  7:3ce4be6d8e5e added c
  | |   () [default] draft
  | *  6:d5f148423c16 added b
  | |   () [default] draft
  | @  5:8e222f257bbf watbar to a
  |/    () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --all --content-divergent
  merge:[5] watbar to a
  with: [10] added a
  base: [1] added a
  rebasing "divergent" content-divergent changeset 8e222f257bbf on 2228e3b74514
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[6] added b
  with: [11] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset d5f148423c16 on 7e67dfb7ee31
  rebasing "other" content-divergent changeset 6eb54b5af3fb on 7e67dfb7ee31
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[7] added c
  with: [12] added c
  base: [3] added c
  rebasing "divergent" content-divergent changeset 3ce4be6d8e5e on 80cec1b1c90f
  rebasing "other" content-divergent changeset 8ed612937375 on 80cec1b1c90f
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[8] added d
  with: [13] added d
  base: [4] added d
  rebasing "divergent" content-divergent changeset c72d2885eb51 on 7e370616fb2b
  rebasing "other" content-divergent changeset d45f050514c2 on 7e370616fb2b
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 7e67dfb7ee31

  $ hg glog
  o  24:469255caf534 added d
  |   () [default] draft
  o  21:7e370616fb2b added c
  |   () [default] draft
  o  18:80cec1b1c90f added b
  |   () [default] draft
  @  15:7e67dfb7ee31 watbar to a
  |   () [default] draft
  o  9:2228e3b74514 add newfile
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

when "divergent" and "other" both hit merge conflict in relocating
------------------------------------------------------------------

  $ hg strip 14: --hidden
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/stackrepo1/.hg/strip-backup/7e67dfb7ee31-ff5c6a6d-backup.hg
  8 new content-divergent changesets

Prepare repo to have merge conflicts
  $ hg up -r "max(desc('added a'))"
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg evolve -r . --content-divergent
  merge:[5] watbar to a
  with: [10] added a
  base: [1] added a
  rebasing "divergent" content-divergent changeset 8e222f257bbf on 2228e3b74514
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  6 new orphan changesets
  working directory is now at 7e67dfb7ee31
  $ echo b_conflict > b
  $ hg amend -A
  adding b

Let's try to evolve stack
  $ hg evolve --content-divergent
  merge:[6] added b
  with: [11] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset d5f148423c16 on c758af982013
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ echo b > b
  $ hg res -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 6:d5f148423c16 "added b"
  rebasing "other" content-divergent changeset 6eb54b5af3fb on c758af982013
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ echo b > b
  $ hg res -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 11:6eb54b5af3fb "added b"
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[7] added c
  with: [12] added c
  base: [3] added c
  rebasing "divergent" content-divergent changeset 3ce4be6d8e5e on 1a79fc84e761
  rebasing "other" content-divergent changeset 8ed612937375 on 1a79fc84e761
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[8] added d
  with: [13] added d
  base: [4] added d
  rebasing "divergent" content-divergent changeset c72d2885eb51 on 6c228f1e5409
  rebasing "other" content-divergent changeset d45f050514c2 on 6c228f1e5409
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at c758af982013
  $ hg glog
  o  25:957008d45543 added d
  |   () [default] draft
  o  22:6c228f1e5409 added c
  |   () [default] draft
  o  19:1a79fc84e761 added b
  |   () [default] draft
  @  16:c758af982013 watbar to a
  |   () [default] draft
  o  9:2228e3b74514 add newfile
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

when relocating "other" hit merge conflict but not "divergent"
--------------------------------------------------------------
  $ hg strip 14: --hidden
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/stackrepo1/.hg/strip-backup/c758af982013-0af4fee9-backup.hg
  8 new content-divergent changesets

Insert conflicting changes in between the stack of content-div csets
  $ hg up -r "max(desc('added b'))"
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo b_diverging_local > b
  $ hg amend
  2 new orphan changesets
  $ hg evolve
  move:[12] added c
  atop:[14] added b
  move:[13] added d
  $ hg up -r d5f148423c16
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo b_diverging_other > b
  $ hg amend
  2 new orphan changesets
  $ hg evolve
  move:[7] added c
  atop:[17] added b
  move:[8] added d

  $ hg log -r tip
  changeset:   19:c351be27f199
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  instability: content-divergent
  summary:     added d
  
Now let's try to evolve stack
  $ hg evolve --content-divergent
  merge:[5] watbar to a
  with: [10] added a
  base: [1] added a
  rebasing "divergent" content-divergent changeset 8e222f257bbf on 2228e3b74514
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[14] added b
  with: [17] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset 2a955e808c53 on 7e67dfb7ee31
  rebasing "other" content-divergent changeset 509103439e5e on 7e67dfb7ee31
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  4 new orphan changesets
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

As now we have interrupted evolution of stack of content-divergent cset (when
relocation of "divergent" also included) let's test --abort and --stop 
test --abort:
  $ hg evolve --abort
  2 new content-divergent changesets
  evolve aborted
  working directory is now at 509103439e5e

confirm that tip is same as it was before we started --content-div resolution
  $ hg log -r tip
  changeset:   19:c351be27f199
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  instability: content-divergent
  summary:     added d
  
test --stop:
  $ hg log -G
  *  changeset:   19:c351be27f199
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  instability: content-divergent
  |  summary:     added d
  |
  *  changeset:   18:eaf34afe4df3
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  instability: content-divergent
  |  summary:     added c
  |
  @  changeset:   17:509103439e5e
  |  parent:      5:8e222f257bbf
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  instability: content-divergent
  |  summary:     added b
  |
  | *  changeset:   16:91c8ccb9c241
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: content-divergent
  | |  summary:     added d
  | |
  | *  changeset:   15:48b0f803817a
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: content-divergent
  | |  summary:     added c
  | |
  | *  changeset:   14:2a955e808c53
  | |  parent:      10:c04ff147ef79
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: content-divergent
  | |  summary:     added b
  | |
  | *  changeset:   10:c04ff147ef79
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: content-divergent
  | |  summary:     added a
  | |
  | o  changeset:   9:2228e3b74514
  | |  parent:      0:8fa14d15e168
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     add newfile
  | |
  * |  changeset:   5:8e222f257bbf
  |/   parent:      0:8fa14d15e168
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    instability: content-divergent
  |    summary:     watbar to a
  |
  o  changeset:   0:8fa14d15e168
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     added hgignore
  
  $ hg evolve --content-divergent
  merge:[5] watbar to a
  with: [10] added a
  base: [1] added a
  rebasing "divergent" content-divergent changeset 8e222f257bbf on 2228e3b74514
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[14] added b
  with: [17] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset 2a955e808c53 on 7e67dfb7ee31
  rebasing "other" content-divergent changeset 509103439e5e on 7e67dfb7ee31
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  4 new orphan changesets
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ hg evolve --stop
  2 new orphan changesets
  stopped the interrupted evolve
  working directory is now at 2a955e808c53
  $ hg log -G
  o  changeset:   21:7e67dfb7ee31
  |  tag:         tip
  |  parent:      9:2228e3b74514
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     watbar to a
  |
  | *  changeset:   19:c351be27f199
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: orphan, content-divergent
  | |  summary:     added d
  | |
  | *  changeset:   18:eaf34afe4df3
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: orphan, content-divergent
  | |  summary:     added c
  | |
  | *  changeset:   17:509103439e5e
  | |  parent:      5:8e222f257bbf
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: orphan, content-divergent
  | |  summary:     added b
  | |
  | | *  changeset:   16:91c8ccb9c241
  | | |  user:        test
  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | | |  instability: orphan, content-divergent
  | | |  summary:     added d
  | | |
  | | *  changeset:   15:48b0f803817a
  | | |  user:        test
  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | | |  instability: orphan, content-divergent
  | | |  summary:     added c
  | | |
  | | @  changeset:   14:2a955e808c53
  | | |  parent:      10:c04ff147ef79
  | | |  user:        test
  | | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | | |  instability: orphan, content-divergent
  | | |  summary:     added b
  | | |
  +---x  changeset:   10:c04ff147ef79
  | |    user:        test
  | |    date:        Thu Jan 01 00:00:00 1970 +0000
  | |    obsolete:    rewritten using evolve as 21:7e67dfb7ee31
  | |    summary:     added a
  | |
  o |  changeset:   9:2228e3b74514
  | |  parent:      0:8fa14d15e168
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     add newfile
  | |
  | x  changeset:   5:8e222f257bbf
  |/   parent:      0:8fa14d15e168
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    obsolete:    rebased using evolve as 21:7e67dfb7ee31
  |    summary:     watbar to a
  |
  o  changeset:   0:8fa14d15e168
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     added hgignore
  
  $ hg obslog -r 'desc("watbar to a")' --all
  o    7e67dfb7ee31 (21) watbar to a
  |\     rewritten from 186bdc2cdfa2 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    rewritten(description, content) from c04ff147ef79 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  186bdc2cdfa2 (20) watbar to a
  | |    rebased(parent) from 8e222f257bbf using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  c04ff147ef79 (10) added a
  | |    rebased(parent) from c7586e2a9264 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  8e222f257bbf (5) watbar to a
  |/     rewritten(description, content) from c7586e2a9264 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  c7586e2a9264 (1) added a
  
  $ hg obslog -r 'desc("added b")' --all
  @  2a955e808c53 (14) added b
  |    amended(content) from 6eb54b5af3fb using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  | *  509103439e5e (17) added b
  | |    amended(content) from d5f148423c16 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  6eb54b5af3fb (11) added b
  | |    rebased(parent) from b1661037fa25 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  d5f148423c16 (6) added b
  |/     rebased(parent) from b1661037fa25 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  b1661037fa25 (2) added b
  

Again, let's evolve the stack
  $ hg evolve --content-divergent
  merge:[14] added b
  with: [17] added b
  base: [2] added b
  rebasing "divergent" content-divergent changeset 2a955e808c53 on 7e67dfb7ee31
  rebasing "other" content-divergent changeset 509103439e5e on 7e67dfb7ee31
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ echo foo > b
  $ hg res -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  merge:[15] added c
  with: [18] added c
  base: [3] added c
  rebasing "divergent" content-divergent changeset 48b0f803817a on ddfcba2aac91
  rebasing "other" content-divergent changeset eaf34afe4df3 on ddfcba2aac91
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[16] added d
  with: [19] added d
  base: [4] added d
  rebasing "divergent" content-divergent changeset 91c8ccb9c241 on bb396302d792
  rebasing "other" content-divergent changeset c351be27f199 on bb396302d792
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at ddfcba2aac91

  $ hg evolve -l

  $ cd ..

Make sure that content-divergent resolution doesn't undo a change (issue6203)
-----------------------------------------------------------------------------

  $ hg init issue6203
  $ cd issue6203
  $ echo a > a; hg add a; hg ci -m a
  $ echo 'b with typo' > b; hg add b; hg ci -m b
  $ echo c > c; hg add c; hg ci -m c

  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [1] b
  $ echo 'b without typo' > b
  $ hg amend
  1 new orphan changesets
  $ hg evolve
  move:[2] c
  atop:[3] b

  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo d > d; hg add d; hg ci -m d
  created new head
  $ hg rebase --hidden --config experimental.evolution.allowdivergence=True -s 1 -d 5
  rebasing 1:d420a663b65e "b"
  rebasing 2:49f182e7a6cc "c"
  4 new content-divergent changesets
  $ hg log -G -v --patch
  *  changeset:   7:ef4885dea3da
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  instability: content-divergent
  |  files:       c
  |  description:
  |  c
  |
  |
  |  diff -r fe788ccf5416 -r ef4885dea3da c
  |  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  |  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  |  @@ -0,0 +1,1 @@
  |  +c
  |
  *  changeset:   6:fe788ccf5416
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  instability: content-divergent
  |  files:       b
  |  description:
  |  b
  |
  |
  |  diff -r 980f7dc84c29 -r fe788ccf5416 b
  |  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  |  +++ b/b	Thu Jan 01 00:00:00 1970 +0000
  |  @@ -0,0 +1,1 @@
  |  +b with typo
  |
  @  changeset:   5:980f7dc84c29
  |  parent:      0:cb9a9f314b8b
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  files:       d
  |  description:
  |  d
  |
  |
  |  diff -r cb9a9f314b8b -r 980f7dc84c29 d
  |  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  |  +++ b/d	Thu Jan 01 00:00:00 1970 +0000
  |  @@ -0,0 +1,1 @@
  |  +d
  |
  | *  changeset:   4:fef59171875e
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: content-divergent
  | |  files:       c
  | |  description:
  | |  c
  | |
  | |
  | |  diff -r 5b2d00df9c4e -r fef59171875e c
  | |  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  | |  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  | |  @@ -0,0 +1,1 @@
  | |  +c
  | |
  | *  changeset:   3:5b2d00df9c4e
  |/   parent:      0:cb9a9f314b8b
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    instability: content-divergent
  |    files:       b
  |    description:
  |    b
  |
  |
  |    diff -r cb9a9f314b8b -r 5b2d00df9c4e b
  |    --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  |    +++ b/b	Thu Jan 01 00:00:00 1970 +0000
  |    @@ -0,0 +1,1 @@
  |    +b without typo
  |
  o  changeset:   0:cb9a9f314b8b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     files:       a
     description:
     a
  
  
     diff -r 000000000000 -r cb9a9f314b8b a
     --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     +++ b/a	Thu Jan 01 00:00:00 1970 +0000
     @@ -0,0 +1,1 @@
     +a
  

  $ hg evolve --content-divergent
  merge:[3] b
  with: [6] b
  base: [1] b
  rebasing "divergent" content-divergent changeset 5b2d00df9c4e on 980f7dc84c29
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[4] c
  with: [7] c
  base: [2] c
  rebasing "divergent" content-divergent changeset fef59171875e on bfba946a2829
  rebasing "other" content-divergent changeset ef4885dea3da on bfba946a2829
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

Expected result:
Changeset with description "b" only adds file "b" with content "b without typo".
Changeset with description "c" only adds file "c" with content "c".

  $ hg glog -l2 -p
  o  12:a5abd6c7f9d8 c
  |   () [default] draftdiff -r bfba946a2829 -r a5abd6c7f9d8 c
  |  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  |  +++ b/c	Thu Jan 01 00:00:00 1970 +0000
  |  @@ -0,0 +1,1 @@
  |  +c
  |
  o  9:bfba946a2829 b
  |   () [default] draftdiff -r 980f7dc84c29 -r bfba946a2829 b
  ~  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     +++ b/b	Thu Jan 01 00:00:00 1970 +0000
     @@ -0,0 +1,1 @@
     +b without typo
  
  $ cd ..

Testing case when resolution parent is ambiguous (MultipleSuccessorsError)
--------------------------------------------------------------------------

  $ hg init multiplesuccs1
  $ cd multiplesuccs1
  $ echo base > base
  $ hg ci -Aqm "added base"
  $ echo foo > foo
  $ hg ci -Aqm "added foo"
  $ echo bar > bar; echo car > car
  $ hg ci -Aqm "added bar and car"
  $ echo dar > dar
  $ hg ci -Aqm "added dar"

  $ cd ..
  $ hg clone multiplesuccs1 multiplesuccs2
  updating to branch default
  5 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd multiplesuccs2
  $ hg up -r "desc('added foo')"
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ echo newfoo > foo
  $ hg amend
  2 new orphan changesets
  $ hg evolve
  move:[2] added bar and car
  atop:[4] added foo
  move:[3] added dar

  $ cd ../multiplesuccs1
  $ hg up -r "desc('added base')"
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ echo tuna > tuna
  $ hg ci -Aqm "added tuna"
  $ hg rebase -s "desc('added foo')" -d .
  rebasing 1:8da7bbaea4f7 "added foo"
  rebasing 2:7f4b97b13607 "added bar and car"
  rebasing 3:9f12b2fcb3de "added dar"

  $ cd ../multiplesuccs2
  $ hg pull
  pulling from $TESTTMP/multiplesuccs1
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 4 changesets with 1 changes to 5 files (+1 heads)
  3 new obsolescence markers
  6 new content-divergent changesets
  new changesets 9703820a7d5b:9a1f460df8b5 (4 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg glog
  *  10:9a1f460df8b5 added dar
  |   () [default] draft
  *  9:7dd5b9d42ef3 added bar and car
  |   () [default] draft
  *  8:afd8b2ea1b77 added foo
  |   () [default] draft
  o  7:9703820a7d5b added tuna
  |   () [default] draft
  | *  6:57a3f8edf065 added dar
  | |   () [default] draft
  | *  5:f4ed107810a7 added bar and car
  | |   () [default] draft
  | @  4:8a2d93492f59 added foo
  |/    () [default] draft
  o  0:bde1d2b6b5e5 added base
      () [default] draft

  $ hg evolve -r 4+5 --content-divergent
  merge:[4] added foo
  with: [8] added foo
  base: [1] added foo
  rebasing "divergent" content-divergent changeset 8a2d93492f59 on 9703820a7d5b
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  merge:[5] added bar and car
  with: [9] added bar and car
  base: [2] added bar and car
  rebasing "divergent" content-divergent changeset f4ed107810a7 on 3e0693d8f69b
  rebasing "other" content-divergent changeset 7dd5b9d42ef3 on 3e0693d8f69b
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  2 new orphan changesets
  working directory is now at 3e0693d8f69b

  $ hg glog
  o  15:5382795441b8 added bar and car
  |   () [default] draft
  @  12:3e0693d8f69b added foo
  |   () [default] draft
  | *  10:9a1f460df8b5 added dar
  | |   () [default] draft
  | x  9:7dd5b9d42ef3 added bar and car
  | |   () [default] draft
  | x  8:afd8b2ea1b77 added foo
  |/    () [default] draft
  o  7:9703820a7d5b added tuna
  |   () [default] draft
  | *  6:57a3f8edf065 added dar
  | |   () [default] draft
  | x  5:f4ed107810a7 added bar and car
  | |   () [default] draft
  | x  4:8a2d93492f59 added foo
  |/    () [default] draft
  o  0:bde1d2b6b5e5 added base
      () [default] draft

  $ echo bar > bar; hg ci -Aqm "added bar"
  $ echo car > car; hg ci -Aqm "added car"
  $ hg prune --split -s 16+17 -r 15
  1 changesets pruned

  $ hg evolve --content-divergent
  skipping 57a3f8edf065: have a different parent than 9a1f460df8b5 (not handled yet)
  | 57a3f8edf065, 9a1f460df8b5 are not based on the same changeset.
  | With the current state of its implementation, 
  | evolve does not work in that case.
  | rebase one of them next to the other and run 
  | this command again.
  | - either: hg rebase --dest 'p1(57a3f8edf065)' -r 9a1f460df8b5
  | - or:     hg rebase --dest 'p1(9a1f460df8b5)' -r 57a3f8edf065