view tests/test-exchange-obsmarkers-case-A3.t @ 5572:d7d954b6d518

evolve: remove swapping nodes logic while resolving divergence

Before this patch, while solving content-divergence if one of the
divergent cset need to relocate to resolution parent we used to set that
cset to "other" side; so it was like we are always going to relocate "other"
side which made us to swap the two if "divergent" cset need to relocate.

Above mentioned solution for relocating cset was not good and led us to incorrect
output in some cases.

So this patch, simplify the logic and remove the swapping thing and clearly depend
on resolution parent to check if any of the divergent cset needs to relocate.
This also means that now in some cases if both the divergent csets needs
to relocate, both will be relocated. Even before this patch, there are some cases
where both the divergent csets relocated but not in every case where it should
have.

Coming to the changes in test files:
1) changes in order of merging the two divergent csets is due to fact that
   now "divergent" and "other" are not swapped and hence "divergent" will be at
   local side and "other" will be at "other", which also results in change in
   the hash id for some cases.

2) extra changesets: which is the result of the fact that now we don't miss
   any case where both the divergent csets should be based on resolution parent
   before performing the merge -> which caught some cases and performed relocation,
   hence extra changesets. Although you can find that there is no changes in file
   content because of these relocation, but I remember loosing some data because
   of not relocating the "divergent", so why leave any risk out there by not
   relocating "other" to the resolution parent.

============================================
Testing obsolescence markers push: Cases A.3
============================================

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 A: simple cases
TestCase 3: old branch split in two, only one of the new one pushed
Variants:
# a: changesets are known on remote
# b: changesets are known on remote (push needs -f)

A.3 new branchs created, one pushed.
====================================

.. {{{
..   B' ○⇢ø B
..      | |
..      \Aø⇠◔ A'
..       \|/
..        ● O
.. }}}
..
.. Markers  exist from:
..
..  * `A ø⇠○ A'`
..  * `B ø⇠○ B'`
..
.. Command runs:
..
..  * hg push -r A
..
.. Expected exchange:
..
..  * chain from A
..
.. Expected exclude:
..
..  * chain from B
..
.. Extra note:
..
.. If A and B are remontly known, we should expect:
..
..  * `hg push` will complain about the new head
..  * `hg push` should complain about unstable history creation

Setup
-----

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

initial

  $ setuprepos A.3.a
  creating test repo for test case A.3.a
  - pulldest
  - main
  - pushdest
  cd into `main` and proceed with env setup
  $ cd main
  $ mkcommit A0
  $ mkcommit B0
  $ hg update -q 0
  $ mkcommit A1
  created new head
  $ hg update -q 0
  $ mkcommit B1
  created new head
  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
  1 new obsolescence markers
  obsoleted 1 changesets
  1 new orphan changesets
  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
  1 new obsolescence markers
  obsoleted 1 changesets
  $ hg log -G --hidden
  @  f6298a8ac3a4 (draft): B1
  |
  | o  e5ea8f9c7314 (draft): A1
  |/
  | 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'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  obshashtree
  ===========
  a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04 0000000000000000000000000000000000000000
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0000000000000000000000000000000000000000
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0000000000000000000000000000000000000000
  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 3bc2ee626e11a7cf8fee7a66d069271e17d5a597
  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 91716bfd671b5a5854a47ac5d392edfdd25e431a
  obshashrange
  ============
           rev         node        index         size        depth      obshash
             3 e5ea8f9c7314            0            2            2 3bc2ee626e11
             4 f6298a8ac3a4            0            2            2 91716bfd671b
             0 a9bdc8b26820            0            1            1 000000000000
             3 e5ea8f9c7314            1            1            2 3bc2ee626e11
             4 f6298a8ac3a4            1            1            2 91716bfd671b
  $ cd ..
  $ cd ..

Actual Test for first version (changeset unknown in remote)
-----------------------------------------------------------

  $ dotest A.3.a A1
  ## Running testcase A.3.a
  # testing echange of "A1" (e5ea8f9c7314)
  ## initial state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  # obstore: pulldest
  ## pushing "A1" from main to pushdest
  pushing to pushdest
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files
  remote: 1 new obsolescence markers
  ## post push state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  ## pulling "e5ea8f9c7314" from main into pulldest
  pulling from main
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  1 new obsolescence markers
  new changesets e5ea8f9c7314 (1 drafts)
  (run 'hg update' to get a working copy)
  ## post pull state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

other variant: changeset known in remote
----------------------------------------

  $ setuprepos A.3.b
  creating test repo for test case A.3.b
  - pulldest
  - main
  - pushdest
  cd into `main` and proceed with env setup
  $ cd main
  $ mkcommit A0
  $ mkcommit B0
  $ hg push -q ../pushdest
  $ hg push -q ../pulldest
  $ hg update -q 0
  $ mkcommit A1
  created new head
  $ hg update -q 0
  $ mkcommit B1
  created new head
  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
  1 new obsolescence markers
  obsoleted 1 changesets
  1 new orphan changesets
  $ hg debugobsolete `getid 'desc(B0)'` `getid 'desc(B1)'`
  1 new obsolescence markers
  obsoleted 1 changesets
  $ hg log -G --hidden
  @  f6298a8ac3a4 (draft): B1
  |
  | o  e5ea8f9c7314 (draft): A1
  |/
  | 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'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  obshashtree
  ===========
  a9bdc8b26820b1b87d585b82eb0ceb4a2ecdbc04 0000000000000000000000000000000000000000
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0000000000000000000000000000000000000000
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 0000000000000000000000000000000000000000
  e5ea8f9c73143125d36658e90ef70c6d2027a5b7 3bc2ee626e11a7cf8fee7a66d069271e17d5a597
  f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 91716bfd671b5a5854a47ac5d392edfdd25e431a
  obshashrange
  ============
           rev         node        index         size        depth      obshash
             3 e5ea8f9c7314            0            2            2 3bc2ee626e11
             4 f6298a8ac3a4            0            2            2 91716bfd671b
             0 a9bdc8b26820            0            1            1 000000000000
             3 e5ea8f9c7314            1            1            2 3bc2ee626e11
             4 f6298a8ac3a4            1            1            2 91716bfd671b
  $ cd ..
  $ cd ..

Actual Test for first version (changeset known in remote)
-----------------------------------------------------------

check it complains about multiple heads

  $ cd A.3.b
  $ hg push -R main -r 'desc(A1)' pushdest
  pushing to pushdest
  searching for changes
  abort: push creates new remote head e5ea8f9c7314!
  (merge or see 'hg help push' for details about pushing new heads)
  [255]
  $ cd ..

test obsmarkers exchange.

  $ dotest A.3.b A1 -f
  ## Running testcase A.3.b
  # testing echange of "A1" (e5ea8f9c7314)
  ## initial state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  # obstore: pulldest
  ## pushing "A1" from main to pushdest
  pushing to pushdest
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files (+1 heads)
  remote: 1 new obsolescence markers
  remote: obsoleted 1 changesets
  remote: 1 new orphan changesets
  ## post push state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  ## pulling "e5ea8f9c7314" from main into pulldest
  pulling from main
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  1 new obsolescence markers
  obsoleted 1 changesets
  1 new orphan changesets
  new changesets e5ea8f9c7314 (1 drafts)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  ## post pull state
  # obstore: main
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pushdest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  # obstore: pulldest
  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}