annotate tests/test-evolve-content-divergent-case-A3.t @ 5695:8c7de8f8bb42

evolve: respect command-templates.oneline-summary if configured

Mercurial has a new `command-templates.oneline-summary` config that is
respected by `hg rebase`, `hg phabsend`, and the bundled version of
`hg split`. This patch makes `hg evolve` also respect it. Unlike the
upstream commands, I let `hg evolve` use the existing template by
default. The reason I didn't change the default is that we have a
different template when topics are enabled and it's unclear how that
should work with the default from upstream. So at least for now, the
user will have to explicitly set the new config if they want it to
apply to `hg evolve`.

===============================================
Testing content-divergence resolution: Case A.3
===============================================

Independent rewrites of same changeset can lead to content-divergence. In most
common cases, it can occur when multiple users rewrite the same changeset
independently and push it.

This test belongs to a series of tests checking the resolution of content-divergent
changesets.

Category A: no parents are obsolete
Testcase 3: one side relocated forward and other amended content changes
Variants:
# a: "local" is rebased forward
# b: "other" is rebased forward

A.3 Relocated forward; other side amended content changes
=========================================================

.. (Divergence reason):
..    local: relocated the changeset forward in the graph
..    other: amended some content changes
.. Where we show that since one side amended some changes and other just relocated,
.. the most reasonable behaviour is to relocate the amended one to the same parent as
.. relocated one and perform 3-way merge.
..
.. (local):
..
..    C ø⇠○ C'
..      | |
..      | ○ B
..      \ |
..        ○ A
..        |
..        ● O
..
.. (other):
..
..      C ø⇠○ C''
..        | |
..   B ○  | |
..      \ | /
..      A ○
..        |
..        ● O
..
.. (Resolution):
..
..     ○ C'''
..     |
..     ○ B
..     |
..     ○ A
..     |
..     ● O
..

Setup
-----
  $ . $TESTDIR/testlib/content-divergence-util.sh
  $ setuprepos A.3
  creating test repo for test case A.3
  - upstream
  - local
  - other
  cd into `local` and proceed with env setup

initial

  $ cd upstream
  $ mkcommit A
  $ mkcommit B
  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [1] A
  $ mkcommit C
  created new head
  $ cd ../local
  $ hg pull -qu
  $ hg rebase -r 'desc(C)' -d 'desc(B)'
  rebasing 3:928c8849ec01 tip "C"

  $ cd ../other
  $ hg pull -qu
  $ echo newC > C
  $ hg amend
  $ hg push -q

  $ cd ../local
  $ hg push -fq
  2 new content-divergent changesets
  $ hg pull -q
  2 new content-divergent changesets

Actual test of resolution
-------------------------

Variant_a: when "local" is rebased forward
------------------------------------------
  $ hg evolve -l
  384129981c4b: C
    content-divergent: 710d96992b40 (draft) (precursor 928c8849ec01)
  
  710d96992b40: C
    content-divergent: 384129981c4b (draft) (precursor 928c8849ec01)
  
  $ hg log -G --hidden
  *  5:710d96992b40 (draft): C [content-divergent]
  |
  | @  4:384129981c4b (draft): C [content-divergent]
  | |
  +---x  3:928c8849ec01 (draft): C
  | |
  | o  2:f6fbb35d8ac9 (draft): B
  |/
  o  1:f5bc6836db60 (draft): A
  |
  o  0:a9bdc8b26820 (public): O
  

  $ hg evolve --content-divergent
  merge:[4] C
  with: [5] C
  base: [3] C
  rebasing "other" content-divergent changeset 710d96992b40 on f6fbb35d8ac9
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 3ad062d48137

  $ hg log -G
  @  7:3ad062d48137 (draft): C
  |
  o  2:f6fbb35d8ac9 (draft): B
  |
  o  1:f5bc6836db60 (draft): A
  |
  o  0:a9bdc8b26820 (public): O
  
  $ hg log -pl 1
  7:3ad062d48137 (draft): C 
  diff -r f6fbb35d8ac9 -r 3ad062d48137 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 @@
  +newC
  
  $ hg evolve -l

Variant_b: when "other" is rebased forward
------------------------------------------

  $ cd ../other
  $ hg pull -q
  2 new content-divergent changesets
  $ hg evolve -l
  710d96992b40: C
    content-divergent: 384129981c4b (draft) (precursor 928c8849ec01)
  
  384129981c4b: C
    content-divergent: 710d96992b40 (draft) (precursor 928c8849ec01)
  
  $ hg log -G --hidden
  *  5:384129981c4b (draft): C [content-divergent]
  |
  | @  4:710d96992b40 (draft): C [content-divergent]
  | |
  | | x  3:928c8849ec01 (draft): C
  | |/
  o |  2:f6fbb35d8ac9 (draft): B
  |/
  o  1:f5bc6836db60 (draft): A
  |
  o  0:a9bdc8b26820 (public): O
  
  $ hg evolve --content-divergent
  merge:[4] C
  with: [5] C
  base: [3] C
  rebasing "divergent" content-divergent changeset 710d96992b40 on f6fbb35d8ac9
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 8f91b97f6f9a

  $ hg log -G
  @  7:8f91b97f6f9a (draft): C
  |
  o  2:f6fbb35d8ac9 (draft): B
  |
  o  1:f5bc6836db60 (draft): A
  |
  o  0:a9bdc8b26820 (public): O
  
  $ hg evolve -l

  $ hg log -pl1
  7:8f91b97f6f9a (draft): C 
  diff -r f6fbb35d8ac9 -r 8f91b97f6f9a 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 @@
  +newC