evolve: make sure divergence resolution doesn't undo changes (issue6203)
Before this patch, in content-divergence resolution logic if resolution
parent is not the parent of any of the two divergent changesets then
it could undo some changes introduced by previous revs (while resolving
stack of content-divergent changesets) as demonstrated by the test added in
previous patch.
To solve this, what this patch doing is: if divergent cset has obsolete
parent with a successor then first resolve the "orphan" instability of
divergent cset by relocating, then perform the content-divergence resolution.
After this change in logic, I found that it's kind of more correct as
reflected by the changes in tests/test-evolve-content-divergent-corner-cases.t
where it prevented creating conflicts while merging.
Changes in tests/test-evolve-content-divergent-stack.t demonstrate the fixed
behaviour.
Next patches will be covering the `evolve --continue` case for the relocation
of "divergent" cset.
Testing the continue functionality of `hg evolve`
$ cat >> $HGRCPATH <<EOF
> [ui]
> interactive = True
> [alias]
> glog = log -GT "{rev}:{node|short} {desc}\n ({bookmarks}) {phase}"
> [extensions]
> rebase =
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Setting up the repo
$ hg init repo
$ cd repo
$ 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
Simple case of evolve --continue
$ hg up ca1b80f7960a
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo bar > d
$ hg add d
$ hg amend
1 new orphan changesets
$ hg glog
@ 5:cb6a2ab625bb added c
| () draft
| * 4:c41c793e0ef1 added d
| | () draft
| x 3:ca1b80f7960a added c
|/ () draft
o 2:b1661037fa25 added b
| () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg evolve --all
move:[4] added d
atop:[5] added c
merging d
warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > d
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 4:c41c793e0ef1 "added d"
working directory is now at cb6a2ab625bb
$ hg glog
o 6:2a4e03d422e2 added d
| () draft
@ 5:cb6a2ab625bb added c
| () draft
o 2:b1661037fa25 added b
| () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg up
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Case when conflicts resolution lead to empty wdir in evolve --continue
$ echo foo > e
$ hg ci -Aqm "added e"
$ hg prev
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
[6] added d
$ echo bar > e
$ hg add e
$ hg amend
1 new orphan changesets
$ hg glog
@ 8:00a5c774cc37 added d
| () draft
| * 7:ad0a59d83efe added e
| | () draft
| x 6:2a4e03d422e2 added d
|/ () draft
o 5:cb6a2ab625bb added c
| () draft
o 2:b1661037fa25 added b
| () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg evolve --update
move:[7] added e
atop:[8] added d
merging e
warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo bar > e
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg diff
$ hg evolve --continue
evolving 7:ad0a59d83efe "added e"
evolution of 7:ad0a59d83efe created no changes to commit
working directory is now at 00a5c774cc37
$ hg glog
@ 8:00a5c774cc37 added d
| () draft
o 5:cb6a2ab625bb added c
| () draft
o 2:b1661037fa25 added b
| () draft
o 1:c7586e2a9264 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
Case when there are a lot of revision to continue
$ hg up c7586e2a9264
0 files updated, 0 files merged, 4 files removed, 0 files unresolved
$ echo bar > b
$ hg add b
$ hg amend
3 new orphan changesets
$ hg evolve --all --update
move:[2] added b
atop:[9] added a
merging b
warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > b
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 2:b1661037fa25 "added b"
move:[5] added c
atop:[10] added b
move:[8] added d
working directory is now at 6642d2c9176e
$ hg glog
@ 12:6642d2c9176e added d
| () draft
o 11:95665a2de664 added c
| () draft
o 10:87f748868183 added b
| () draft
o 9:53b632d203d8 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
Conlicts -> resolve -> continue -> conflicts -> resolve -> continue
Test multiple conflicts in one evolve
$ for ch in f g h; do echo foo > $ch; hg add $ch; hg ci -m "added "$ch; done;
$ hg glog
@ 15:09becba8f97d added h
| () draft
o 14:5aa7b2bbd944 added g
| () draft
o 13:be88f889b6dc added f
| () draft
o 12:6642d2c9176e added d
| () draft
o 11:95665a2de664 added c
| () draft
o 10:87f748868183 added b
| () draft
o 9:53b632d203d8 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg up 95665a2de664
1 files updated, 0 files merged, 4 files removed, 0 files unresolved
$ echo bar > f
$ echo bar > h
$ hg add f h
$ hg amend
4 new orphan changesets
$ hg glog
@ 16:645135c5caa4 added c
| () draft
| * 15:09becba8f97d added h
| | () draft
| * 14:5aa7b2bbd944 added g
| | () draft
| * 13:be88f889b6dc added f
| | () draft
| * 12:6642d2c9176e added d
| | () draft
| x 11:95665a2de664 added c
|/ () draft
o 10:87f748868183 added b
| () draft
o 9:53b632d203d8 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg evolve --all --update
move:[12] added d
atop:[16] added c
move:[13] added f
merging f
warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > f
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 13:be88f889b6dc "added f"
move:[14] added g
atop:[18] added f
move:[15] added h
merging h
warning: conflicts while merging h! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > h
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 15:09becba8f97d "added h"
working directory is now at 3ba9d3d1b089
Make sure, confirmopt is respected while continue
$ hg glog
@ 20:3ba9d3d1b089 added h
| () draft
o 19:981e615b14ca added g
| () draft
o 18:5794f1a3cbb2 added f
| () draft
o 17:e47537da02b3 added d
| () draft
o 16:645135c5caa4 added c
| () draft
o 10:87f748868183 added b
| () draft
o 9:53b632d203d8 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
$ hg up 5794f1a3cbb2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo bar > g
$ hg add g
$ hg amend
2 new orphan changesets
$ hg evolve --all --update --confirm << EOF
> y
> EOF
move:[19] added g
atop:[21] added f
perform evolve? [Ny] y
merging g
warning: conflicts while merging g! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > g
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue << EOF
> y
> EOF
evolving 19:981e615b14ca "added g"
move:[20] added h
atop:[22] added g
perform evolve? [Ny] y
working directory is now at af6bd002a48d
$ hg glog
@ 23:af6bd002a48d added h
| () draft
o 22:d2c94a8f44bd added g
| () draft
o 21:9849fa96c885 added f
| () draft
o 17:e47537da02b3 added d
| () draft
o 16:645135c5caa4 added c
| () draft
o 10:87f748868183 added b
| () draft
o 9:53b632d203d8 added a
| () draft
o 0:8fa14d15e168 added hgignore
() draft
Testing `evolve --continue` after `hg next --evolve`
$ hg up .^^
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo foobar > g
$ hg amend
2 new orphan changesets
$ hg next --evolve
move:[22] added g
atop:[24] added f
merging g
warning: conflicts while merging g! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
$ echo foo > g
$ hg resolve -m
(no more unresolved files)
continue: hg evolve --continue
$ hg evolve --continue
evolving 22:d2c94a8f44bd "added g"
Testing that interrupted evolve don't get confused about copies (issue5930):
----------------------------------------------------------------------------
$ cd ..
$ hg init issue5930
$ cd issue5930
$ echo a > a
$ hg ci -Am "added a"
adding a
$ hg cp a b
$ hg ci -m "rename a to b"
$ hg up 0 -q
$ echo c > c
$ hg ci -Am "added c"
adding c
created new head
$ echo d > c
$ echo d > d
$ hg ci -Am "added d, modified c"
adding d
$ hg up .^
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg log -G -T "{rev} {desc}\n"
o 3 added d, modified c
|
@ 2 added c
|
| o 1 rename a to b
|/
o 0 added a
$ hg rebase -r . -d 1
rebasing 2:29edef26570b "added c"
1 new orphan changesets
$ echo conflict > c
$ hg amend
$ hg log -G -T "{rev} {desc}\n"
@ 5 added c
|
| * 3 added d, modified c
| |
| x 2 added c
| |
o | 1 rename a to b
|/
o 0 added a
$ hg evolve
move:[3] added d, modified c
atop:[5] added c
merging c
warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
unresolved merge conflicts
(see 'hg help evolve.interrupted')
[1]
Status mentions file 'b' (copied from 'a') here, even though it wasn't
affected by the evolved changeset (nor was 'a')
$ hg st -C
M c
A d
? c.orig