view tests/test-evolve-content-divergent-relocation.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: relocation
======================================================

This file intend to cover case where changesets need to be moved to different parents

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


Testing resolution of content-divergent changesets when they are on different
parents and resolution and relocation wont result in conflicts
------------------------------------------------------------------------------

  $ hg init multiparents
  $ cd multiparents
  $ 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

  $ hg up .^^
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo bar > b
  $ hg amend
  2 new orphan changesets

  $ hg rebase -r b1661037fa25 -d 8fa14d15e168 --hidden --config experimental.evolution.allowdivergence=True
  rebasing 2:b1661037fa25 "added b"
  2 new content-divergent changesets

  $ hg glog
  *  6:da4b96f4a8d6 added b
  |   () [default] draft
  | @  5:7ed0642d644b added b
  | |   () [default] draft
  | | *  4:c41c793e0ef1 added d
  | | |   () [default] draft
  | | *  3:ca1b80f7960a added c
  | | |   () [default] draft
  | | x  2:b1661037fa25 added b
  | |/    () [default] draft
  | o  1:c7586e2a9264 added a
  |/    () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent
  merge:[5] added b
  with: [6] added b
  base: [2] added b
  rebasing "other" content-divergent changeset da4b96f4a8d6 on c7586e2a9264
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at e7fdc662d630

  $ hg glog
  @  8:e7fdc662d630 added b
  |   () [default] draft
  | *  4:c41c793e0ef1 added d
  | |   () [default] draft
  | *  3:ca1b80f7960a added c
  | |   () [default] draft
  | x  2:b1661037fa25 added b
  |/    () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg exp
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Node ID e7fdc662d6305fee2908c3f1630e0b20d6f4689a
  # Parent  c7586e2a92645e473645847a7b69a6dc52be4276
  added b
  
  diff -r c7586e2a9264 -r e7fdc662d630 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 @@
  +bar

  $ hg debugobsolete
  b1661037fa25511d0b7ccddf405e336f9d7d3424 7ed0642d644bb9ad93d252dd9ffe7b4729febe48 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  b1661037fa25511d0b7ccddf405e336f9d7d3424 da4b96f4a8d610a85b225583138f681d67e275dd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  da4b96f4a8d610a85b225583138f681d67e275dd 11f849d7159fa30a63dbbc1a6d251a8d996baeb5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7ed0642d644bb9ad93d252dd9ffe7b4729febe48 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  11f849d7159fa30a63dbbc1a6d251a8d996baeb5 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  $ hg obslog --all
  @    e7fdc662d630 (8) added b
  |\     amended(content) from 11f849d7159f using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    rewritten from 7ed0642d644b using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  11f849d7159f (7) added b
  | |    rebased(parent) from da4b96f4a8d6 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  7ed0642d644b (5) added b
  | |    amended(content) from b1661037fa25 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  da4b96f4a8d6 (6) added b
  |/     rebased(parent) from b1661037fa25 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  b1661037fa25 (2) added b
  

Resolving orphans to get back to a normal graph

  $ hg evolve --all
  move:[3] added c
  atop:[8] added b
  move:[4] added d
  $ hg glog
  o  10:be5a8b9faa8a added d
  |   () [default] draft
  o  9:e2ce33033e42 added c
  |   () [default] draft
  @  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

More testing!

  $ echo x > x
  $ hg ci -Aqm "added x"
  $ hg glog -r .
  @  11:801b5920c7ea added x
  |   () [default] draft
  ~

  $ echo foo > x
  $ hg branch bar
  marked working directory as branch bar
  (branches are permanent and global, did you want a bookmark?)
  $ hg amend -m "added foo to x"

  $ hg up 'predecessors(.)' --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset 801b5920c7ea
  (hidden revision '801b5920c7ea' was rewritten as: 5cf74a13db18)
  working directory parent is obsolete! (801b5920c7ea)
  (use 'hg evolve' to update to its successor: 5cf74a13db18)
  $ hg rebase -r . -d 'desc("added d")' --config experimental.evolution.allowdivergence=True
  rebasing 11:801b5920c7ea "added x"
  2 new content-divergent changesets

  $ hg glog
  @  13:45e15d6e88f5 added x
  |   () [default] draft
  | *  12:5cf74a13db18 added foo to x
  | |   () [bar] draft
  o |  10:be5a8b9faa8a added d
  | |   () [default] draft
  o |  9:e2ce33033e42 added c
  |/    () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent
  merge:[12] added foo to x
  with: [13] added x
  base: [11] added x
  rebasing "divergent" content-divergent changeset 5cf74a13db18 on be5a8b9faa8a
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 618f8bd245a8

  $ hg exp
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Branch bar
  # Node ID 618f8bd245a8d1892954eb49a88a6ec5e500a5b5
  # Parent  be5a8b9faa8af54f115aa168a2c8564acb40c37d
  added foo to x
  
  diff -r be5a8b9faa8a -r 618f8bd245a8 x
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/x	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +foo

The above `hg exp` and the following log call demonstrates that message, content
and branch change is preserved in case of relocation
  $ hg glog
  @  15:618f8bd245a8 added foo to x
  |   () [bar] draft
  o  10:be5a8b9faa8a added d
  |   () [default] draft
  o  9:e2ce33033e42 added c
  |   () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg debugobsolete
  b1661037fa25511d0b7ccddf405e336f9d7d3424 7ed0642d644bb9ad93d252dd9ffe7b4729febe48 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  b1661037fa25511d0b7ccddf405e336f9d7d3424 da4b96f4a8d610a85b225583138f681d67e275dd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  da4b96f4a8d610a85b225583138f681d67e275dd 11f849d7159fa30a63dbbc1a6d251a8d996baeb5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7ed0642d644bb9ad93d252dd9ffe7b4729febe48 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  11f849d7159fa30a63dbbc1a6d251a8d996baeb5 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  ca1b80f7960aae2306287bab52b4090c59af8c29 e2ce33033e42db2e61a5f71c6dfb52a33efeaf6a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  c41c793e0ef1ddb463e85ea9491e377d01127ba2 be5a8b9faa8af54f115aa168a2c8564acb40c37d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 5cf74a13db180e33dc2df8cd2aa70b21252a2a64 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'amend', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 45e15d6e88f5bd23ba360dff0c7591eca2d99f43 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  5cf74a13db180e33dc2df8cd2aa70b21252a2a64 911c21adca136894a2b35f0a58fae7ee94fa5e61 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  911c21adca136894a2b35f0a58fae7ee94fa5e61 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  45e15d6e88f5bd23ba360dff0c7591eca2d99f43 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'evolve', 'user': 'test'}
  $ hg obslog --all
  @    618f8bd245a8 (15) added foo to x
  |\     rewritten(description, branch, content) from 45e15d6e88f5 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    rewritten from 911c21adca13 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  45e15d6e88f5 (13) added x
  | |    rebased(parent) from 801b5920c7ea using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  911c21adca13 (14) added foo to x
  | |    rebased(parent) from 5cf74a13db18 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  5cf74a13db18 (12) added foo to x
  |/     rewritten(description, branch, content) from 801b5920c7ea using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  801b5920c7ea (11) added x
  

Testing when both the content-divergence are on different parents and resolution
will lead to conflicts
---------------------------------------------------------------------------------

  $ hg up .^^^
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved

  $ echo y > y
  $ hg ci -Aqm "added y"
  $ hg glog -r .
  @  16:ecf1d3992eb4 added y
  |   () [default] draft
  ~

  $ echo bar > y
  $ hg amend

  $ hg up 'predecessors(.)' --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset ecf1d3992eb4
  (hidden revision 'ecf1d3992eb4' was rewritten as: 9c32d35206fb)
  working directory parent is obsolete! (ecf1d3992eb4)
  (use 'hg evolve' to update to its successor: 9c32d35206fb)
  $ hg rebase -r . -d 'desc("added foo to x")' --config experimental.evolution.allowdivergence=True
  rebasing 16:ecf1d3992eb4 "added y"
  2 new content-divergent changesets
  $ echo wat > y
  $ hg amend

  $ hg glog
  @  19:bfe170c9c964 added y
  |   () [bar] draft
  | *  17:9c32d35206fb added y
  | |   () [default] draft
  o |  15:618f8bd245a8 added foo to x
  | |   () [bar] draft
  o |  10:be5a8b9faa8a added d
  | |   () [default] draft
  o |  9:e2ce33033e42 added c
  |/    () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent
  merge:[17] added y
  with: [19] added y
  base: [16] added y
  rebasing "divergent" content-divergent changeset 9c32d35206fb on 618f8bd245a8
  merging y
  warning: conflicts while merging y! (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 watbar > y
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  working directory is now at 7411ed2cf7cf

  $ hg glog
  @  21:7411ed2cf7cf added y
  |   () [bar] draft
  o  15:618f8bd245a8 added foo to x
  |   () [bar] draft
  o  10:be5a8b9faa8a added d
  |   () [default] draft
  o  9:e2ce33033e42 added c
  |   () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg debugobsolete
  b1661037fa25511d0b7ccddf405e336f9d7d3424 7ed0642d644bb9ad93d252dd9ffe7b4729febe48 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  b1661037fa25511d0b7ccddf405e336f9d7d3424 da4b96f4a8d610a85b225583138f681d67e275dd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  da4b96f4a8d610a85b225583138f681d67e275dd 11f849d7159fa30a63dbbc1a6d251a8d996baeb5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7ed0642d644bb9ad93d252dd9ffe7b4729febe48 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  11f849d7159fa30a63dbbc1a6d251a8d996baeb5 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  ca1b80f7960aae2306287bab52b4090c59af8c29 e2ce33033e42db2e61a5f71c6dfb52a33efeaf6a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  c41c793e0ef1ddb463e85ea9491e377d01127ba2 be5a8b9faa8af54f115aa168a2c8564acb40c37d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 5cf74a13db180e33dc2df8cd2aa70b21252a2a64 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'amend', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 45e15d6e88f5bd23ba360dff0c7591eca2d99f43 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  5cf74a13db180e33dc2df8cd2aa70b21252a2a64 911c21adca136894a2b35f0a58fae7ee94fa5e61 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  911c21adca136894a2b35f0a58fae7ee94fa5e61 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  45e15d6e88f5bd23ba360dff0c7591eca2d99f43 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'evolve', 'user': 'test'}
  ecf1d3992eb4d9700d441013fc4e89014692b461 9c32d35206fb5c3bf0ac814d410914d54a959a87 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  ecf1d3992eb4d9700d441013fc4e89014692b461 491e9c6e22a4f265fad54d2060b9c2fa45f4301d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '68', 'operation': 'rebase', 'user': 'test'}
  491e9c6e22a4f265fad54d2060b9c2fa45f4301d bfe170c9c96484157a071cd74e400426376c5e0e 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  9c32d35206fb5c3bf0ac814d410914d54a959a87 7c47d5c3b6f5fb934723cdeb45c5819760988e1d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7c47d5c3b6f5fb934723cdeb45c5819760988e1d 7411ed2cf7cfbc23f17711a72570787569177d69 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '72', 'operation': 'evolve', 'user': 'test'}
  bfe170c9c96484157a071cd74e400426376c5e0e 7411ed2cf7cfbc23f17711a72570787569177d69 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  $ hg obslog -r . --all
  @    7411ed2cf7cf (21) added y
  |\     rewritten(branch, content) from 7c47d5c3b6f5 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    amended(content) from bfe170c9c964 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  7c47d5c3b6f5 (20) added y
  | |    rebased(parent) from 9c32d35206fb using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  bfe170c9c964 (19) added y
  | |    amended(content) from 491e9c6e22a4 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  491e9c6e22a4 (18) added y
  | |    rewritten(branch, parent) from ecf1d3992eb4 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  9c32d35206fb (17) added y
  |/     amended(content) from ecf1d3992eb4 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  ecf1d3992eb4 (16) added y
  

checking that relocated commit is there
  $ hg exp 20 --hidden
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Node ID 7c47d5c3b6f5fb934723cdeb45c5819760988e1d
  # Parent  618f8bd245a8d1892954eb49a88a6ec5e500a5b5
  added y
  
  diff -r 618f8bd245a8 -r 7c47d5c3b6f5 y
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/y	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +bar

Testing when the relocation will result in conflicts and merging also:
----------------------------------------------------------------------

  $ hg glog
  @  21:7411ed2cf7cf added y
  |   () [bar] draft
  o  15:618f8bd245a8 added foo to x
  |   () [bar] draft
  o  10:be5a8b9faa8a added d
  |   () [default] draft
  o  9:e2ce33033e42 added c
  |   () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg up .^^^^
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved

  $ echo z > z
  $ hg ci -Aqm "added z"
  $ hg glog -r .
  @  22:2048a66e8834 added z
  |   () [default] draft
  ~

  $ echo foo > y
  $ hg add y
  $ hg amend

  $ hg up 'predecessors(.)' --hidden
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to hidden changeset 2048a66e8834
  (hidden revision '2048a66e8834' was rewritten as: 9bc2ace42175)
  working directory parent is obsolete! (2048a66e8834)
  (use 'hg evolve' to update to its successor: 9bc2ace42175)
  $ hg rebase -r . -d 'desc("added y")' --config experimental.evolution.allowdivergence=True
  rebasing 22:2048a66e8834 "added z"
  2 new content-divergent changesets
  $ echo bar > z
  $ hg amend

  $ hg glog
  @  25:40a21b3496bc added z
  |   () [bar] draft
  | *  23:9bc2ace42175 added z
  | |   () [default] draft
  o |  21:7411ed2cf7cf added y
  | |   () [bar] draft
  o |  15:618f8bd245a8 added foo to x
  | |   () [bar] draft
  o |  10:be5a8b9faa8a added d
  | |   () [default] draft
  o |  9:e2ce33033e42 added c
  |/    () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent --any
  merge:[23] added z
  with: [25] added z
  base: [22] added z
  rebasing "divergent" content-divergent changeset 9bc2ace42175 on 7411ed2cf7cf
  merging y
  warning: conflicts while merging y! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ hg diff
  diff -r 7411ed2cf7cf y
  --- a/y	Thu Jan 01 00:00:00 1970 +0000
  +++ b/y	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,5 @@
  +<<<<<<< destination: 7411ed2cf7cf bar - test: added y
   watbar
  +=======
  +foo
  +>>>>>>> evolving:    9bc2ace42175 - test: added z
  diff -r 7411ed2cf7cf z
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/z	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +z

  $ echo foo > y
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue

  $ hg evolve --continue
  evolving 23:9bc2ace42175 "added z"
  merging y
  warning: conflicts while merging y! (edit, then use 'hg resolve --mark')
  1 files updated, 0 files merged, 0 files removed, 1 files unresolved
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

  $ hg diff
  diff -r 635c0edd2e45 y
  --- a/y	Thu Jan 01 00:00:00 1970 +0000
  +++ b/y	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,5 @@
  +<<<<<<< local: 635c0edd2e45 - test: added z
   foo
  +=======
  +watbar
  +>>>>>>> other: 40a21b3496bc bar - test: added z
  diff -r 635c0edd2e45 z
  --- a/z	Thu Jan 01 00:00:00 1970 +0000
  +++ b/z	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,1 @@
  -z
  +bar

  $ echo foo > y
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  working directory is now at 664febd074c2

  $ hg glog
  @  27:664febd074c2 added z
  |   () [bar] draft
  o  21:7411ed2cf7cf added y
  |   () [bar] draft
  o  15:618f8bd245a8 added foo to x
  |   () [bar] draft
  o  10:be5a8b9faa8a added d
  |   () [default] draft
  o  9:e2ce33033e42 added c
  |   () [default] draft
  o  8:e7fdc662d630 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg exp
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Branch bar
  # Node ID 664febd074c2f9c5c4e03045dd688e93360f297c
  # Parent  7411ed2cf7cfbc23f17711a72570787569177d69
  added z
  
  diff -r 7411ed2cf7cf -r 664febd074c2 y
  --- a/y	Thu Jan 01 00:00:00 1970 +0000
  +++ b/y	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,1 +1,1 @@
  -watbar
  +foo
  diff -r 7411ed2cf7cf -r 664febd074c2 z
  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  +++ b/z	Thu Jan 01 00:00:00 1970 +0000
  @@ -0,0 +1,1 @@
  +bar

  $ hg debugobsolete
  b1661037fa25511d0b7ccddf405e336f9d7d3424 7ed0642d644bb9ad93d252dd9ffe7b4729febe48 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  b1661037fa25511d0b7ccddf405e336f9d7d3424 da4b96f4a8d610a85b225583138f681d67e275dd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  da4b96f4a8d610a85b225583138f681d67e275dd 11f849d7159fa30a63dbbc1a6d251a8d996baeb5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7ed0642d644bb9ad93d252dd9ffe7b4729febe48 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  11f849d7159fa30a63dbbc1a6d251a8d996baeb5 e7fdc662d6305fee2908c3f1630e0b20d6f4689a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  ca1b80f7960aae2306287bab52b4090c59af8c29 e2ce33033e42db2e61a5f71c6dfb52a33efeaf6a 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  c41c793e0ef1ddb463e85ea9491e377d01127ba2 be5a8b9faa8af54f115aa168a2c8564acb40c37d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 5cf74a13db180e33dc2df8cd2aa70b21252a2a64 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'amend', 'user': 'test'}
  801b5920c7ea8d4ebdbc9cfc1e79e665dea2f211 45e15d6e88f5bd23ba360dff0c7591eca2d99f43 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  5cf74a13db180e33dc2df8cd2aa70b21252a2a64 911c21adca136894a2b35f0a58fae7ee94fa5e61 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  911c21adca136894a2b35f0a58fae7ee94fa5e61 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  45e15d6e88f5bd23ba360dff0c7591eca2d99f43 618f8bd245a8d1892954eb49a88a6ec5e500a5b5 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '73', 'operation': 'evolve', 'user': 'test'}
  ecf1d3992eb4d9700d441013fc4e89014692b461 9c32d35206fb5c3bf0ac814d410914d54a959a87 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  ecf1d3992eb4d9700d441013fc4e89014692b461 491e9c6e22a4f265fad54d2060b9c2fa45f4301d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '68', 'operation': 'rebase', 'user': 'test'}
  491e9c6e22a4f265fad54d2060b9c2fa45f4301d bfe170c9c96484157a071cd74e400426376c5e0e 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  9c32d35206fb5c3bf0ac814d410914d54a959a87 7c47d5c3b6f5fb934723cdeb45c5819760988e1d 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  7c47d5c3b6f5fb934723cdeb45c5819760988e1d 7411ed2cf7cfbc23f17711a72570787569177d69 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '72', 'operation': 'evolve', 'user': 'test'}
  bfe170c9c96484157a071cd74e400426376c5e0e 7411ed2cf7cfbc23f17711a72570787569177d69 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  2048a66e8834bda866dcc8c479f091897816833e 9bc2ace42175da7380251fca97730f62ff5b9185 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  2048a66e8834bda866dcc8c479f091897816833e 8bf0130be95ef72377e39232335531426c2abcf9 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '68', 'operation': 'rebase', 'user': 'test'}
  8bf0130be95ef72377e39232335531426c2abcf9 40a21b3496bc55fd0c0ac92d81b2930cfa4d4bef 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  9bc2ace42175da7380251fca97730f62ff5b9185 635c0edd2e45de215b2061b30aae5168708238d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '12', 'operation': 'evolve', 'user': 'test'}
  635c0edd2e45de215b2061b30aae5168708238d3 664febd074c2f9c5c4e03045dd688e93360f297c 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '72', 'operation': 'evolve', 'user': 'test'}
  40a21b3496bc55fd0c0ac92d81b2930cfa4d4bef 664febd074c2f9c5c4e03045dd688e93360f297c 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  $ hg obslog --all
  @    664febd074c2 (27) added z
  |\     amended(content) from 40a21b3496bc using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    rewritten(branch, content) from 635c0edd2e45 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  40a21b3496bc (25) added z
  | |    amended(content) from 8bf0130be95e using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  635c0edd2e45 (26) added z
  | |    rewritten(parent, content) from 9bc2ace42175 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  8bf0130be95e (24) added z
  | |    rewritten(branch, parent) from 2048a66e8834 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  9bc2ace42175 (23) added z
  |/     amended(content) from 2048a66e8834 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  2048a66e8834 (22) added z
  

  $ cd ..

Testing when relocation results in nothing to commit
----------------------------------------------------

Set up a repo where relocation results in no changes to commit because the
changes from the relocated node are already in the destination.

  $ hg init nothing-to-commit
  $ cd nothing-to-commit
  $ echo 0 > a
  $ hg ci -Aqm initial
  $ echo 1 > a
  $ hg ci -Aqm upstream
  $ hg prev -q

Create the source of divergence.
  $ echo 0 > b
  $ hg ci -Aqm divergent

The first side of the divergence get rebased on top of upstream.
  $ hg rebase -r . -d 'desc("upstream")'
  rebasing 2:898ddd4443b3 "divergent" (tip)
  $ hg --hidden co 2 -q
  updated to hidden changeset 898ddd4443b3
  (hidden revision '898ddd4443b3' was rewritten as: befae6138569)
  working directory parent is obsolete! (898ddd4443b3)

The other side of the divergence gets amended so it matches upstream.
Relocation (onto upstream) will therefore result in no changes to commit.
  $ hg revert -r 'desc("upstream")' --all
  removing b
  reverting a
  $ hg amend --config experimental.evolution.allowdivergence=True
  2 new content-divergent changesets

Add a commit on top. This one should become an orphan. Evolving it later
should put it on top of the other divergent side (the one that's on top of
upstream)
  $ echo 0 > c
  $ hg ci -Aqm child
  $ hg co -q null
  $ hg glog
  o  5:88473f9137d1 child
  |   () [default] draft
  *  4:4cc21313ecee divergent
  |   () [default] draft
  | *  3:befae6138569 divergent
  | |   () [default] draft
  | o  1:33c576d20069 upstream
  |/    () [default] draft
  o  0:98a3f8f02ba7 initial
      () [default] draft
  $ hg evolve --content-divergent
  merge:[3] divergent
  with: [4] divergent
  base: [2] divergent
  rebasing "other" content-divergent changeset 4cc21313ecee on 33c576d20069
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  1 new orphan changesets
  $ hg glog
  o  7:cc3d0c6117c7 divergent
  |   () [default] draft
  | *  5:88473f9137d1 child
  | |   () [default] draft
  | x  4:4cc21313ecee divergent
  | |   () [default] draft
  o |  1:33c576d20069 upstream
  |/    () [default] draft
  o  0:98a3f8f02ba7 initial
      () [default] draft

  $ hg evolve --any
  move:[5] child
  atop:[7] divergent
  $ hg glog
  o  8:916b4ec3b91f child
  |   () [default] draft
  o  7:cc3d0c6117c7 divergent
  |   () [default] draft
  o  1:33c576d20069 upstream
  |   () [default] draft
  o  0:98a3f8f02ba7 initial
      () [default] draft
  $ hg debugobsolete
  898ddd4443b3d5520bf48f22f9411d5a0751cf2e befae61385695f1ae4b78b030ad91075b2b523ef 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  898ddd4443b3d5520bf48f22f9411d5a0751cf2e 4cc21313ecee97ce33265514a0596a192bfa6b3f 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  4cc21313ecee97ce33265514a0596a192bfa6b3f bf4fe3a3afeb14c338094f41a35863921856592f 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '12', 'operation': 'evolve', 'user': 'test'}
  befae61385695f1ae4b78b030ad91075b2b523ef cc3d0c6117c7400995107497370fa4c2138399cd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'evolve', 'user': 'test'}
  bf4fe3a3afeb14c338094f41a35863921856592f cc3d0c6117c7400995107497370fa4c2138399cd 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'evolve', 'user': 'test'}
  88473f9137d12e90055d30bbb9b78dd786520870 916b4ec3b91fd03826bd4b179051ae3cee633b56 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'evolve', 'user': 'test'}
  $ hg obslog -r 'desc("divergent")' --all
  o    cc3d0c6117c7 (7) divergent
  |\     amended(content) from befae6138569 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |    rewritten from bf4fe3a3afeb using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  befae6138569 (3) divergent
  | |    rebased(parent) from 898ddd4443b3 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  bf4fe3a3afeb (6) divergent
  | |    rewritten(parent, content) from 4cc21313ecee using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  4cc21313ecee (4) divergent
  |/     amended(content) from 898ddd4443b3 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  898ddd4443b3 (2) divergent
  
  $ cd ..