internals: document bundle2 format
It seems like a good idea to have thorough documentation of the bundle2
data format, including the format of each part and the capabilities.
The added documentation is far from complete. For example, we don't
fully capture the semantics of each capability and part. But a start
is better than nothing, which was pretty much where we were before.
Differential Revision: https://phab.mercurial-scm.org/D2298
====================================
Testing head checking code: Case A-8
====================================
Mercurial checks for the introduction of new heads on push. Evolution comes
into play to detect if existing branches on the server are being replaced by
some of the new one we push.
This case is part of a series of tests checking this behavior.
Category A: simple case involving a branch being superceeded by another.
TestCase 8: single-changeset branch indirect rewrite
.. old-state:
..
.. * 1-changeset branch
..
.. new-state:
..
.. * 1-changeset branch succeeding to A, through another unpushed changesets
..
.. expected-result:
..
.. * push allowed
..
.. graph-summary:
..
.. A'
.. A ø⇠ø⇠◔ A''
.. |/ /
.. | /
.. |/
.. ●
$ . $TESTDIR/testlib/push-checkheads-util.sh
Test setup
----------
$ mkdir A8
$ cd A8
$ setuprepos
creating basic server and client repo
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd client
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit A1
created new head
$ hg up 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit A2
created new head
$ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
obsoleted 1 changesets
$ hg debugobsolete `getid "desc(A1)" ` `getid "desc(A2)"`
obsoleted 1 changesets
$ hg log -G --hidden
@ c1f8d089020f (draft): A2
|
| x f6082bc4ffef (draft): A1
|/
| x 8aaa48160adc (draft): A0
|/
o 1e4be0697311 (public): root
Actual testing
--------------
$ hg push
pushing to $TESTTMP/A8/server
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files (+1 heads)
2 new obsolescence markers
obsoleted 1 changesets
$ cd ../..