view tests/test-evolve-content-divergent-case-A1.t @ 6889:a66cf9008781

obslog: also display patch for rebased changesets

This applies the same logic that is used for "merge-diff" to rebased
changesets. The successors' content is compared to the content of the
predecessors rebased in-memory on the new parents.

This highlights the changes that were actually introduced while rebasing (like
conflict resolution or API adjustment).

As a side effect, obslog now also outputs slightly more diffs for splits,
showing what parts of the original big changeset were moved to the smaller
split components (but for now it only works for the first few changesets).

===============================================
Testing content-divergence resolution: Case A.1
===============================================

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 1: no conflict: independent metadata changes only

A.1 No content changes on any side
==================================

.. (Divergence reason):
..    local: changed the description of changeset
..    other: changed the date of changeset
.. Where we show that since there is no content change in divergent changesets
.. we should only merge the metadata of changesets in a 3-way merge
..
.. (local):
..
..   A ø⇠○ A'
..     |/
..     ● O
..
.. (other):
..
..   A ø⇠○ A''
..     |/
..     ● O
..
.. (Resolution):
..
..     ○ A'''
..     |
..     ● O
..

Setup
-----
  $ . $TESTDIR/testlib/content-divergence-util.sh
  $ setuprepos A.1
  creating test repo for test case A.1
  - upstream
  - local
  - other
  cd into `local` and proceed with env setup

initial

  $ cd local
  $ mkcommit A0
  $ hg push -q
  $ hg amend -m "A1"
  $ hg log -G --hidden
  @  2:0d8c87cec5fc (draft): A1
  |
  | x  1:28b51eb45704 (draft): A0
  |/
  o  0:a9bdc8b26820 (public): O
  
  $ cd ../other
  $ hg pull -uq
  $ hg amend -d '0 1'
  $ hg push -q

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

Actual test of resolution
-------------------------
  $ hg evolve -l
  0d8c87cec5fc: A1
    content-divergent: ece7459c388a (draft) (precursor 28b51eb45704)
  
  ece7459c388a: A0
    content-divergent: 0d8c87cec5fc (draft) (precursor 28b51eb45704)
  
  $ hg log -G --hidden
  *  3:ece7459c388a (draft): A0 [content-divergent]
  |
  | @  2:0d8c87cec5fc (draft): A1 [content-divergent]
  |/
  | x  1:28b51eb45704 (draft): A0
  |/
  o  0:a9bdc8b26820 (public): O
  

  $ hg evolve --content-divergent
  merge:[2] A1
  with: [3] A0
  base: [1] A0
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 36c6c1f70ad9

  $ hg log -G
  @  4:36c6c1f70ad9 (draft): A1
  |
  o  0:a9bdc8b26820 (public): O
  
  $ hg evolve -l