branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
============================================
Testing obsolescence markers push: Cases B.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 B: pruning case
TestCase 3: Pruned changeset on non-pushed part of the history
B.3 Pruned changeset on non-pushed part of the history
======================================================
.. {{{
.. ⊗ C
.. |
.. ○ B
.. | ◔ A
.. |/
.. ● O
.. }}}
..
.. Marker exists from:
..
.. * C (prune)
..
.. Commands run:
..
.. * hg push -r A
..
.. Expected exchange:
..
.. * ø
..
.. Expected exclude:
..
.. * chain from B
Setup
-----
$ . $TESTDIR/testlib/exchange-obsmarker-util.sh
initial
$ setuprepos B.3
creating test repo for test case B.3
- pulldest
- main
- pushdest
cd into `main` and proceed with env setup
$ cd main
$ mkcommit A
$ hg up --quiet 0
$ mkcommit B
created new head
$ mkcommit C
$ hg prune -qd '0 0' .
$ hg log -G --hidden
x e56289ab6378 (draft): C
|
@ 35b183996678 (draft): B
|
| o f5bc6836db60 (draft): A
|/
o a9bdc8b26820 (public): O
$ inspect_obsmarkers
obsstore content
================
e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
$ cd ..
$ cd ..
Actual Test
-----------------------------------
$ dotest B.3 A
## Running testcase B.3
# testing echange of "A" (f5bc6836db60)
## initial state
# obstore: main
e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
# obstore: pushdest
# obstore: pulldest
## pushing "A" 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
## post push state
# obstore: main
e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
# obstore: pushdest
# obstore: pulldest
## pulling "f5bc6836db60" 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
new changesets f5bc6836db60 (1 drafts)
(run 'hg update' to get a working copy)
## post pull state
# obstore: main
e56289ab6378dc752fd7965f8bf66b58bda740bd 0 {35b1839966785d5703a01607229eea932db42f87} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
# obstore: pushdest
# obstore: pulldest