evolve: add logic to handle a particular case in divergence resolution
Case is: In content divergence, to check if the two csets are on different
parent or same parent what we do is find gca of the two csets and then
compare it with the singlesuccessors of two csets's parents.
Now, if gca is same as singlesuccessors of both the csets then we conclude
that both are on the same parent which is not totally correct as it is
possible that both the parents of two csets are obsolete with a single
successor.
This patch adds the logic to cover the above metioned case correctly,
deciding the part when we need to relocate a cset to other side while
resolving the stack of divergent csets.
Changes in test file demonstrate that before this patch we were not
doing it right because it should have relocated every node to other side
instead of just relocating the first one from the stack.
Tests for the --abort flag for `hg evolve` command while phase-divergence resolution
====================================================================================
The `--abort` flag aborts the interuppted evolve by undoing all the work which
was done during resolution i.e. stripping new changesets created, moving
bookmarks back, moving working directory back.
This test contains cases when `hg evolve` is doing phase-divergence resolution.
Setup
=====
$ cat >> $HGRCPATH <<EOF
> [phases]
> publish = False
> [alias]
> glog = log -GT "{rev}:{node|short} {desc}\n ({bookmarks}) {phase}"
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
$ hg init abortrepo
$ cd abortrepo
$ echo ".*\.orig" > .hgignore
$ hg add .hgignore
$ hg ci -m "added hgignore"
$ for ch in a b c d; do echo foo > $ch; hg add $ch; hg ci -qm "added "$ch; done;
$ hg glog
@ 4:c41c793e0ef1 added d
| () draft
o 3:ca1b80f7960a added c
| () draft
o 2:b1661037fa25 added b
| () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
Creating phase divergence, resolution of which will lead to conflicts
----------------------------------------------------------------------
$ hg up .^^^
0 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg pick -r .~-3
picking 4:c41c793e0ef1 "added d"
$ echo foobar > c
$ hg add c
$ hg amend
$ hg glog --hidden
@ 6:ddba58020bc0 added d
| () draft
| x 5:cfe30edc6125 added d
|/ () draft
| x 4:c41c793e0ef1 added d
| | () draft
| o 3:ca1b80f7960a added c
| | () draft
| o 2:b1661037fa25 added b
|/ () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg phase -r c41c793e0ef1 --public --hidden
1 new phase-divergent changesets
$ hg glog
@ 6:ddba58020bc0 added d
| () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public
$ hg evolve --phase-divergent
recreate:[6] added d
atop:[4] added d
rebasing to destination parent: ca1b80f7960a
merging c
warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
fix conflicts and see `hg help evolve.interrupted`
[1]
testing that interrupted evolve shows up in morestatus
$ hg status -v
M c
A d
# The repository is in an unfinished *evolve* state.
# Unresolved merge conflicts:
#
# c
#
# To mark files as resolved: hg resolve --mark FILE
# To continue: hg evolve --continue
# To abort: hg evolve --abort
# To stop: hg evolve --stop
# (also see `hg help evolve.interrupted`)
$ hg parents
changeset: 3:ca1b80f7960a
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: added c
changeset: 6:ddba58020bc0
tag: tip
parent: 1:c7586e2a9264
user: test
date: Thu Jan 01 00:00:00 1970 +0000
instability: phase-divergent
summary: added d
$ hg evolve --abort
evolve aborted
working directory is now at ddba58020bc0
$ hg glog
@ 6:ddba58020bc0 added d
| () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public
When there are multiple phase-divergent changes, resolution of last one resulted
in conflicts
---------------------------------------------------------------------------------
$ echo foo > c
$ hg amend
$ hg phase -r ca1b80f --draft --force
$ hg prev
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
[1] added a
$ hg pick -r ca1b80f
picking 3:ca1b80f7960a "added c"
$ echo foobar > b
$ hg add b
$ hg amend
$ hg phase -r c41c793e0ef1 --public --hidden
2 new phase-divergent changesets
$ hg evolve --list
e44ebefe4f54: added d
phase-divergent: c41c793e0ef1 (immutable precursor)
28cd06b3f801: added c
phase-divergent: ca1b80f7960a (immutable precursor)
$ hg evolve --dry-run --all --phase-divergent
recreate:[7] added d
atop:[4] added d
hg rebase --rev e44ebefe4f54 --dest ca1b80f7960a;
hg update c41c793e0ef1;
hg revert --all --rev e44ebefe4f54;
hg commit --msg "phase-divergent update to e44ebefe4f54"
recreate:[9] added c
atop:[3] added c
hg rebase --rev 28cd06b3f801 --dest b1661037fa25;
hg update ca1b80f7960a;
hg revert --all --rev 28cd06b3f801;
hg commit --msg "phase-divergent update to 28cd06b3f801"
$ hg glog --hidden
@ 9:28cd06b3f801 added c
| () draft
| x 8:9ff8adbe8a24 added c
|/ () draft
| * 7:e44ebefe4f54 added d
|/ () draft
| x 6:ddba58020bc0 added d
|/ () draft
| x 5:cfe30edc6125 added d
|/ () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public
$ hg evolve --phase-divergent --all
recreate:[7] added d
atop:[4] added d
rebasing to destination parent: ca1b80f7960a
computing new diff
committed as c41c793e0ef1
recreate:[9] added c
atop:[3] added c
rebasing to destination parent: b1661037fa25
merging b
warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
fix conflicts and see `hg help evolve.interrupted`
[1]
$ hg evolve --abort
1 new phase-divergent changesets
evolve aborted
working directory is now at 28cd06b3f801
$ hg glog --hidden
@ 9:28cd06b3f801 added c
| () draft
| x 8:9ff8adbe8a24 added c
|/ () draft
| * 7:e44ebefe4f54 added d
|/ () draft
| x 6:ddba58020bc0 added d
|/ () draft
| x 5:cfe30edc6125 added d
|/ () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public
When there are multiple conflicted phase-divergence resolution and we abort
after resolving one of them
----------------------------------------------------------------------------
$ hg up e44ebefe4f54
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo foobar > c
$ hg amend
$ hg glog --hidden
@ 10:ef9b72b9b42c added d
| () draft
| * 9:28cd06b3f801 added c
|/ () draft
| x 8:9ff8adbe8a24 added c
|/ () draft
| x 7:e44ebefe4f54 added d
|/ () draft
| x 6:ddba58020bc0 added d
|/ () draft
| x 5:cfe30edc6125 added d
|/ () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public
$ hg evolve --phase-divergent --all
recreate:[9] added c
atop:[3] added c
rebasing to destination parent: b1661037fa25
merging b
warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
fix conflicts and see `hg help evolve.interrupted`
[1]
$ echo watwat > c
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 9:28cd06b3f801 "added c"
computing new diff
committed as 95d746965290
recreate:[10] added d
atop:[4] added d
rebasing to destination parent: ca1b80f7960a
merging c
warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
fix conflicts and see `hg help evolve.interrupted`
[1]
$ hg evolve --abort
1 new phase-divergent changesets
evolve aborted
working directory is now at ef9b72b9b42c
$ hg glog --hidden
@ 10:ef9b72b9b42c added d
| () draft
| * 9:28cd06b3f801 added c
|/ () draft
| x 8:9ff8adbe8a24 added c
|/ () draft
| x 7:e44ebefe4f54 added d
|/ () draft
| x 6:ddba58020bc0 added d
|/ () draft
| x 5:cfe30edc6125 added d
|/ () draft
| o 4:c41c793e0ef1 added d
| | () public
| o 3:ca1b80f7960a added c
| | () public
| o 2:b1661037fa25 added b
|/ () public
o 1:c7586e2a9264 added a
| () public
o 0:8fa14d15e168 added hgignore
() public