tests/test-exchange-obsmarkers-case-B5.t

exchange: move simple narrow changegroup generation from extension

The narrow extension completely replaced the function generating the
changegroup part when a narrow changegroup was requested. Previous
commits have taught the in-core changegroup code how to filter files
based on a matcher. This commit teaches the in-core bundle2 part
generation code to construct a matcher based on arguments. It
will also emit a bundle2 part describing the narrow spec.

I believe the changegroup part generation code in the narrow extension
is now limited to ellipsis serving mode. i.e. core is now capable
of narrow changegroup generation when ellipsis mode is disabled.

Differential Revision: https://phab.mercurial-scm.org/D4014

============================================
Testing obsolescence markers push: Cases B.5
============================================

Mercurial pushes obsolescences markers relevant to the "pushed-set", the set of
all changesets that requested to be "in sync" after the push (even if they are
already on both side).

This test belongs to a series of tests checking such set is properly computed
and applied. This does not tests "obsmarkers" discovery capabilities.

Category B: pruning case
TestCase 5: Push of a children of changeset which successors is pruned

B.5 Push of a children of changeset which successors is pruned
==============================================================

.. This case Mirror A.4, with pruned changeset successors.
..
.. {{{
..   C ◔
..     |
..   B⇠ø⇠⊗ B'
..     | |
..   A ø⇠○ A'
..     |/
..     ●
.. }}}
..
.. Marker exist from:
..
..  * `A ø⇠○ A'`
..  * `B ø⇠○ B'`
..  * chain from B
..  * `B' is pruned`
..
.. Command run:
..
..  * hg push -r C
..
.. Expected exchange:
..
..  * chain from B
..
.. Expected exclude:
..
..  * `A ø⇠○ A'`
..  * `B ø⇠○ B'`
..  * `B' prune`

Setup
-----

  $ . $TESTDIR/testlib/exchange-obsmarker-util.sh

initial

  $ setuprepos B.5
  creating test repo for test case B.5
  - pulldest
  - main
  - pushdest
  cd into `main` and proceed with env setup
  $ cd main
  $ mkcommit A0
  $ mkcommit B0
  $ mkcommit C
  $ hg up --quiet 0
  $ mkcommit A1
  created new head
  $ mkcommit B1
  $ hg debugobsolete --hidden `getid 'desc(A0)'` `getid 'desc(A1)'`
  obsoleted 1 changesets
  2 new orphan changesets
  $ hg debugobsolete --hidden aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa `getid 'desc(B0)'`
  $ hg debugobsolete --hidden `getid 'desc(B0)'` `getid 'desc(B1)'`
  obsoleted 1 changesets
  $ hg prune -qd '0 0' 'desc(B1)'
  $ hg log -G --hidden
  x  069b05c3876d (draft): B1
  |
  @  e5ea8f9c7314 (draft): A1
  |
  | *  1d0f3cd25300 (draft): C
  | |
  | x  6e72f0a95b5e (draft): B0
  | |
  | x  28b51eb45704 (draft): A0
  |/
  o  a9bdc8b26820 (public): O
  
  $ inspect_obsmarkers
  obsstore content
  ================
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  069b05c3876d56f62895e853a501ea58ea85f68d 0 {e5ea8f9c73143125d36658e90ef70c6d2027a5b7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  $ cd ..
  $ cd ..

Actual Test (explicit push version)
-----------------------------------

  $ dotest B.5 C -f
  ## Running testcase B.5
  # testing echange of "C" (1d0f3cd25300)
  ## initial state
  # obstore: main
  069b05c3876d56f62895e853a501ea58ea85f68d 0 {e5ea8f9c73143125d36658e90ef70c6d2027a5b7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  # obstore: pulldest
  ## pushing "C" from main to pushdest
  pushing to pushdest
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 3 changesets with 3 changes to 3 files
  remote: 1 new obsolescence markers
  ## post push state
  # obstore: main
  069b05c3876d56f62895e853a501ea58ea85f68d 0 {e5ea8f9c73143125d36658e90ef70c6d2027a5b7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  ## pulling "1d0f3cd25300" from main into pulldest
  pulling from main
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  1 new obsolescence markers
  new changesets 28b51eb45704:1d0f3cd25300
  (run 'hg update' to get a working copy)
  ## post pull state
  # obstore: main
  069b05c3876d56f62895e853a501ea58ea85f68d 0 {e5ea8f9c73143125d36658e90ef70c6d2027a5b7} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 069b05c3876d56f62895e853a501ea58ea85f68d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}