view tests/test-evolve-abort-contentdiv.t @ 3805:2410e7063692

evolve: implement resolution of content-divergence when on differet parents

This patch implements the basic version of resolution of content-divergence
changesets when they are on different parents but one of the parent is gca of
both the different parents.

The functionality first relocates the divergent changeset which was left behind
and then resolves the content-divergence like it resolves in normal cases.

This is a very basic implementation because it still does not work on
interrupted evolution. Test changes in this patch shows the basic functionality
working. The output of dry-run is also required to be tweaked in such cased.

Upcoming patches will add more tests and will improve the implementation to work
during conflicts too.

Tests for the --abort flag for `hg evolve` command while content-divergence resolution
======================================================================================

The `--abort` flag aborts the interuppted evolve by undoing all the work which
was done during resolution i.e. stripping new changesets created, moving
bookmarks back, moving working directory back.

This test contains cases when `hg evolve` is doing content-divergence resolution.

Setup
=====

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

  $ hg init abortrepo
  $ cd abortrepo
  $ 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
  |   () draft
  o  3:ca1b80f7960a added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Creating content divergence, resolution of which will lead to conflicts
-----------------------------------------------------------------------

  $ echo bar > d
  $ hg amend

  $ hg up c41c793e0ef1 --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset c41c793e0ef1
  (hidden revision 'c41c793e0ef1' was rewritten as: e49523854bc8)
  working directory parent is obsolete! (c41c793e0ef1)
  (use 'hg evolve' to update to its successor: e49523854bc8)

  $ echo foobar > d
  $ hg amend
  2 new content-divergent changesets
  $ hg glog --hidden
  @  6:9c1631e352d9 added d
  |   () draft
  | *  5:e49523854bc8 added d
  |/    () draft
  | x  4:c41c793e0ef1 added d
  |/    () draft
  o  3:ca1b80f7960a added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --content-divergent
  merge:[6] added d
  with: [5] added d
  base: [4] added d
  merging "other" content-divergent changeset 'e49523854bc8'
  merging d
  warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  abort: fix conflicts and run 'hg evolve --continue' or use 'hg update -C .' to abort
  [255]

  $ hg evolve --abort
  evolve aborted
  working directory is now at 9c1631e352d9

  $ hg glog --hidden
  @  6:9c1631e352d9 added d
  |   () draft
  | *  5:e49523854bc8 added d
  |/    () draft
  | x  4:c41c793e0ef1 added d
  |/    () draft
  o  3:ca1b80f7960a added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Creating multiple content-divergence where resolution of last one results in
conflicts and resolution of first one resulted in no new commit
-----------------------------------------------------------------------------

  $ echo watbar > d
  $ hg amend
  $ hg up .^
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo bar > c
  $ hg amend
  2 new orphan changesets
  $ hg up ca1b80f7960a --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory parent is obsolete! (ca1b80f7960a)
  (use 'hg evolve' to update to its successor: 2ba73e31f264)
  $ echo foobar > c
  $ hg amend
  2 new content-divergent changesets
  $ echo bar > c
  $ hg amend

  $ hg glog --hidden
  @  10:491e10505bae added c
  |   () draft
  | x  9:7398f702a162 added c
  |/    () draft
  | *  8:2ba73e31f264 added c
  |/    () draft
  | *  7:f0f1694f123e added d
  | |   () draft
  | | x  6:9c1631e352d9 added d
  | |/    () draft
  | | *  5:e49523854bc8 added d
  | |/    () draft
  | | x  4:c41c793e0ef1 added d
  | |/    () draft
  | x  3:ca1b80f7960a added c
  |/    () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --all --content-divergent
  merge:[8] added c
  with: [10] added c
  base: [3] added c
  updating to "local" side of the conflict: 2ba73e31f264
  merging "other" content-divergent changeset '491e10505bae'
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  nothing changed
  merge:[5] added d
  with: [7] added d
  base: [4] added d
  updating to "local" side of the conflict: e49523854bc8
  merging "other" content-divergent changeset 'f0f1694f123e'
  merging d
  warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  abort: fix conflicts and run 'hg evolve --continue' or use 'hg update -C .' to abort
  [255]

  $ hg evolve --abort
  evolve aborted
  working directory is now at 491e10505bae

  $ hg glog --hidden
  @  10:491e10505bae added c
  |   () draft
  | x  9:7398f702a162 added c
  |/    () draft
  | o  8:2ba73e31f264 added c
  |/    () draft
  | *  7:f0f1694f123e added d
  | |   () draft
  | | x  6:9c1631e352d9 added d
  | |/    () draft
  | | *  5:e49523854bc8 added d
  | |/    () draft
  | | x  4:c41c793e0ef1 added d
  | |/    () draft
  | x  3:ca1b80f7960a added c
  |/    () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

XXX: we need to strip off the obsmarker created 10 -> 8
  $ hg obslog -r . --all
  o    2ba73e31f264 (8) added c
  |\
  @ |  491e10505bae (10) added c
  | |    rewritten as 2ba73e31f264 using evolve by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  7398f702a162 (9) added c
  |/     rewritten(content) as 491e10505bae using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  ca1b80f7960a (3) added c
       rewritten(content) as 2ba73e31f264 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
       rewritten(content) as 7398f702a162 using amend by test (Thu Jan 01 00:00:00 1970 +0000)