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tests/test-evolve-content-divergent-relocation.t
author Sushil khanchi <sushilkhanchi97@gmail.com>
Sat, 23 Nov 2019 16:17:04 +0530
branchstable
changeset 4991 2928f35023a1
parent 4676 b6c819facbe8
child 4784 ecf0f3bc7468
child 5123 900668a93629
permissions -rw-r--r--
evolve: make sure divergence resolution doesn't undo changes (issue6203) Before this patch, in content-divergence resolution logic if resolution parent is not the parent of any of the two divergent changesets then it could undo some changes introduced by previous revs (while resolving stack of content-divergent changesets) as demonstrated by the test added in previous patch. To solve this, what this patch doing is: if divergent cset has obsolete parent with a successor then first resolve the "orphan" instability of divergent cset by relocating, then perform the content-divergence resolution. After this change in logic, I found that it's kind of more correct as reflected by the changes in tests/test-evolve-content-divergent-corner-cases.t where it prevented creating conflicts while merging. Changes in tests/test-evolve-content-divergent-stack.t demonstrate the fixed behaviour. Next patches will be covering the `evolve --continue` case for the relocation of "divergent" cset.

======================================================
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 171614c9a791

  $ hg glog
  @  8:171614c9a791 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 171614c9a7914c53f531373b95632323fdbbac8d
  # Parent  c7586e2a92645e473645847a7b69a6dc52be4276
  added b
  
  diff -r c7586e2a9264 -r 171614c9a791 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

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  10:4ae4427ee9f8 added d
  |   () [default] draft
  o  9:917281f93fcb added c
  |   () [default] draft
  @  8:171614c9a791 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 .
  @  11:71a392c714b5 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 71a392c714b5 --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset 71a392c714b5
  (hidden revision '71a392c714b5' was rewritten as: 1e1a50385a7d)
  working directory parent is obsolete! (71a392c714b5)
  (use 'hg evolve' to update to its successor: 1e1a50385a7d)
  $ hg rebase -r . -d 4ae4427ee9f8 --config experimental.evolution.allowdivergence=True
  rebasing 11:71a392c714b5 "added x"
  2 new content-divergent changesets

  $ hg glog
  @  13:1e4f6b3bb39b added x
  |   () [default] draft
  | *  12:1e1a50385a7d added foo to x
  | |   () [bar] draft
  o |  10:4ae4427ee9f8 added d
  | |   () [default] draft
  o |  9:917281f93fcb added c
  |/    () [default] draft
  o  8:171614c9a791 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent
  merge:[13] added x
  with: [12] added foo to x
  base: [11] added x
  rebasing "other" content-divergent changeset 1e1a50385a7d on 4ae4427ee9f8
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at b006cf317e0e

  $ hg exp
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Branch bar
  # Node ID b006cf317e0ed16dbe786c439577475580f645f1
  # Parent  4ae4427ee9f8f0935211fd66360948b77ab5aee9
  added foo to x
  
  diff -r 4ae4427ee9f8 -r b006cf317e0e 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:b006cf317e0e added foo to x
  |   () [bar] draft
  o  10:4ae4427ee9f8 added d
  |   () [default] draft
  o  9:917281f93fcb added c
  |   () [default] draft
  o  8:171614c9a791 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

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:fc6ad2bac162 added y
  |   () [default] draft
  ~

  $ echo bar > y
  $ hg amend

  $ hg up fc6ad2bac162 --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset fc6ad2bac162
  (hidden revision 'fc6ad2bac162' was rewritten as: 2a9f6ccbdeba)
  working directory parent is obsolete! (fc6ad2bac162)
  (use 'hg evolve' to update to its successor: 2a9f6ccbdeba)
  $ hg rebase -r . -d b006cf317e0e --config experimental.evolution.allowdivergence=True
  rebasing 16:fc6ad2bac162 "added y"
  2 new content-divergent changesets
  $ echo wat > y
  $ hg amend

  $ hg glog
  @  19:b4575ed6fcfc added y
  |   () [bar] draft
  | *  17:2a9f6ccbdeba added y
  | |   () [default] draft
  o |  15:b006cf317e0e added foo to x
  | |   () [bar] draft
  o |  10:4ae4427ee9f8 added d
  | |   () [default] draft
  o |  9:917281f93fcb added c
  |/    () [default] draft
  o  8:171614c9a791 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent
  merge:[19] added y
  with: [17] added y
  base: [16] added y
  rebasing "other" content-divergent changeset 2a9f6ccbdeba on b006cf317e0e
  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 7bbcf24ddecf

  $ hg glog
  @  21:7bbcf24ddecf added y
  |   () [bar] draft
  o  15:b006cf317e0e added foo to x
  |   () [bar] draft
  o  10:4ae4427ee9f8 added d
  |   () [default] draft
  o  9:917281f93fcb added c
  |   () [default] draft
  o  8:171614c9a791 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg obslog -r . --all
  @    7bbcf24ddecf (21) added y
  |\
  x |  48f745db3f53 (20) added y
  | |    rewritten(branch, content) as 7bbcf24ddecf using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  b4575ed6fcfc (19) added y
  | |    rewritten(content) as 7bbcf24ddecf using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  2a9f6ccbdeba (17) added y
  | |    rewritten(parent) as 48f745db3f53 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  | x  96b677f01b81 (18) added y
  |/     rewritten(content) as b4575ed6fcfc using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  fc6ad2bac162 (16) added y
       rewritten(content) as 2a9f6ccbdeba using amend by test (Thu Jan 01 00:00:00 1970 +0000)
       rewritten(branch, parent) as 96b677f01b81 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  

checking that relocated commit is there
  $ hg exp 48f745db3f53 --hidden
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Node ID 48f745db3f5300363ca248b9aeab20ff2a55fbb3
  # Parent  b006cf317e0ed16dbe786c439577475580f645f1
  added y
  
  diff -r b006cf317e0e -r 48f745db3f53 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
  @  21:7bbcf24ddecf added y
  |   () [bar] draft
  o  15:b006cf317e0e added foo to x
  |   () [bar] draft
  o  10:4ae4427ee9f8 added d
  |   () [default] draft
  o  9:917281f93fcb added c
  |   () [default] draft
  o  8:171614c9a791 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:daf1de08f3b0 added z
  |   () [default] draft
  ~

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

  $ hg up daf1de08f3b0 --hidden
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to hidden changeset daf1de08f3b0
  (hidden revision 'daf1de08f3b0' was rewritten as: 3f7a1f693080)
  working directory parent is obsolete! (daf1de08f3b0)
  (use 'hg evolve' to update to its successor: 3f7a1f693080)
  $ hg rebase -r . -d 7bbcf24ddecf --config experimental.evolution.allowdivergence=True
  rebasing 22:daf1de08f3b0 "added z"
  2 new content-divergent changesets
  $ echo bar > z
  $ hg amend

  $ hg glog
  @  25:53242575ffa9 added z
  |   () [bar] draft
  | *  23:3f7a1f693080 added z
  | |   () [default] draft
  o |  21:7bbcf24ddecf added y
  | |   () [bar] draft
  o |  15:b006cf317e0e added foo to x
  | |   () [bar] draft
  o |  10:4ae4427ee9f8 added d
  | |   () [default] draft
  o |  9:917281f93fcb added c
  |/    () [default] draft
  o  8:171614c9a791 added b
  |   () [default] draft
  o  1:c7586e2a9264 added a
  |   () [default] draft
  o  0:8fa14d15e168 added hgignore
      () [default] draft

  $ hg evolve --content-divergent --any
  merge:[25] added z
  with: [23] added z
  base: [22] added z
  rebasing "other" content-divergent changeset 3f7a1f693080 on 7bbcf24ddecf
  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 7bbcf24ddecf 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: 7bbcf24ddecf bar - test: added y
   watbar
  +=======
  +foo
  +>>>>>>> evolving:    3f7a1f693080 - test: added z
  diff -r 7bbcf24ddecf 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 23:3f7a1f693080 "added z"
  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]

  $ hg diff
  diff -r 53242575ffa9 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: 53242575ffa9 bar - test: added z
   watbar
  +=======
  +foo
  +>>>>>>> other: cdb0643c69fc - test: added z

  $ echo foo > y
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  working directory is now at 6fc7d9682de6

  $ hg glog
  @  27:6fc7d9682de6 added z
  |   () [bar] draft
  o  21:7bbcf24ddecf added y
  |   () [bar] draft
  o  15:b006cf317e0e added foo to x
  |   () [bar] draft
  o  10:4ae4427ee9f8 added d
  |   () [default] draft
  o  9:917281f93fcb added c
  |   () [default] draft
  o  8:171614c9a791 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 6fc7d9682de6e3bee6c8b1266b756ed7d522b7e4
  # Parent  7bbcf24ddecfe97d7c2ac6fa8c07c155c8fda47b
  added z
  
  diff -r 7bbcf24ddecf -r 6fc7d9682de6 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 7bbcf24ddecf -r 6fc7d9682de6 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

  $ cd ..
evolve