view tests/test-evolve-issue5958.t @ 6935:954d7ea5cd67 stable tip

stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one
successor for it to use in stack. In such a case, let's pick the "latest"
successor from the first set.

We're assuming that obsutil.successorssets() returns data in the same order (it
should, since it makes sure to sort data internally). Keeping that in mind,
while the successor picked for s0 by this code is not based on any sort of
sophisticated logic, it should nonetheless be the same every time.

This patch is probably not going to completely break anything that was
previously working fine, because the previous behavior was to just abort with
an exception.

Content divergence and trying to relocate a node on top of itself (issue5958)
https://bz.mercurial-scm.org/show_bug.cgi?id=5958

  $ . $TESTDIR/testlib/common.sh

  $ cat << EOF >> $HGRCPATH
  > [extensions]
  > rebase =
  > evolve =
  > EOF

  $ hg init issue5958
  $ cd issue5958

  $ echo hi > r0
  $ hg ci -qAm 'add r0'
  $ echo hi > foo.txt
  $ hg ci -qAm 'add foo.txt'
  $ hg metaedit -r . -d '0 2'
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

(Make changes in unrelated files so that we don't have any merge conflicts
during the rebase, but the two touched revisions aren't identical)

  $ echo hi > bar.txt
  $ hg add -q bar.txt
  $ hg amend -q
  $ hg metaedit -r 1 -d '0 1' --hidden
  2 new content-divergent changesets
  $ hg log -r tip
  changeset:   4:c17bf400a278
  tag:         tip
  parent:      0:a24ed8ad918c
  user:        test
  date:        Wed Dec 31 23:59:59 1969 -0000
  instability: content-divergent
  summary:     add foo.txt
  
  $ echo hi > baz.txt
  $ hg add -q baz.txt
  $ hg amend -q
  $ hg rebase -qr tip -d 4
  $ hg log -G
  @  changeset:   6:08bc7ba82799
  |  tag:         tip
  |  parent:      4:c17bf400a278
  |  user:        test
  |  date:        Wed Dec 31 23:59:58 1969 -0000
  |  instability: content-divergent
  |  summary:     add foo.txt
  |
  *  changeset:   4:c17bf400a278
  |  parent:      0:a24ed8ad918c
  |  user:        test
  |  date:        Wed Dec 31 23:59:59 1969 -0000
  |  instability: content-divergent
  |  summary:     add foo.txt
  |
  o  changeset:   0:a24ed8ad918c
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     add r0
  
  $ hg debugobsolete
  cc71ffbc7c002d7b45fb694f9c060bf2e6920672 0065551bd38fe59ea4a069a4db378550c60122d3 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '32', 'operation': 'metaedit', 'user': 'test'}
  0065551bd38fe59ea4a069a4db378550c60122d3 a25dd7af6cf6731ff93708abb2b1b889eae848a0 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  cc71ffbc7c002d7b45fb694f9c060bf2e6920672 c17bf400a2782394b1ca5fbbe59e30494f16dfdc 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '32', 'operation': 'metaedit', 'user': 'test'}
  a25dd7af6cf6731ff93708abb2b1b889eae848a0 1d1fc409af989f5c0843507e202d69a1ad16c5ef 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  1d1fc409af989f5c0843507e202d69a1ad16c5ef 08bc7ba82799f1e419190b0dac1b0e1c4b1355f9 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '12', 'operation': 'rebase', 'user': 'test'}
  $ hg obslog -a -r .
  @  08bc7ba82799 (6) add foo.txt
  |    rewritten(parent, content) from 1d1fc409af98 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  | *  c17bf400a278 (4) add foo.txt
  | |    date-changed(date) from cc71ffbc7c00 using metaedit by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  1d1fc409af98 (5) add foo.txt
  | |    amended(content) from a25dd7af6cf6 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  a25dd7af6cf6 (3) add foo.txt
  | |    amended(content) from 0065551bd38f using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  | |
  x |  0065551bd38f (2) add foo.txt
  |/     date-changed(date) from cc71ffbc7c00 using metaedit by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  cc71ffbc7c00 (1) add foo.txt
  
  $ hg evolve --content-divergent
  merge:[4] add foo.txt
  with: [6] add foo.txt
  base: [1] add foo.txt
  rebasing "other" content-divergent changeset 08bc7ba82799 on a24ed8ad918c
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory is now at d519bd54a945

  $ hg log -G
  @  changeset:   8:d519bd54a945
  |  tag:         tip
  |  parent:      0:a24ed8ad918c
  |  user:        test
  |  date:        Wed Dec 31 23:59:58 1969 -0000
  |  summary:     add foo.txt
  |
  o  changeset:   0:a24ed8ad918c
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     add r0
  
test that resolution is consistent and independent of divergent changeset we initiate the resolution from

  $ hg strip . --config extensions.strip=
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/issue5958/.hg/strip-backup/d519bd54a945-5f6b2f65-backup.hg
  2 new content-divergent changesets
  $ hg up 4
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg evolve --content-divergent
  merge:[4] add foo.txt
  with: [7] add foo.txt
  base: [1] add foo.txt
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory is now at d519bd54a945
  $ hg log -G
  @  changeset:   8:d519bd54a945
  |  tag:         tip
  |  parent:      0:a24ed8ad918c
  |  user:        test
  |  date:        Wed Dec 31 23:59:58 1969 -0000
  |  summary:     add foo.txt
  |
  o  changeset:   0:a24ed8ad918c
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     add r0