view tests/test-evolve-content-divergent-case-A1.t @ 6934:dd518437d4e0 stable

tests: introduce a compat-branches blacklist file

The idea behind this file is to have an easy and obvious mechanism for skipping
some tests on compatibility branches without modifying the test files
themselves or touching .gitlab-ci.yml.

Obviously, each compatibility branch can have different set of tests, and so
the contents of this file can be different on different branches.

This concept had actually existed in core for a long time, see
tests/blacklists/ directory.

===============================================
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