evolve: fix divergence resolution when not merging a descendant
In divergence resolution, when we merge other cset with divergent one
we pass a `mergeancestor` arg to merge.update() and before this patch
we were passing `mergeancestor` as True in every case.
But it should be True only when we are merging a descendant onto an
ancestor.
When mergeancestor is True it does two things:
1) allows the merge if the destination is the same as the parent
of the ctx (so we can use graft to copy commits)
2) informs update that the incoming changes are newer than the
destination so it doesn't prompt about "remote changed foo
which local deleted".
So this patch change it to pass `mergeancestor` as True only when
it is required.
And changes in test file shows that it wasn't prompting either in
those cases when it should (acc. to 2nd point)
Test written by Pierre-Yves David, based the one updated in 5dbaabfe2c59.
==================================
Test for "orphan" type instability
==================================
This file gather test case around the "orphan" changeset instability. This
instability happens when a changesets has obsolete ancestors.
$ cat >> $HGRCPATH <<EOF
> [defaults]
> amend=-d "0 0"
> fold=-d "0 0"
> [web]
> push_ssl = false
> allow_push = *
> [phases]
> publish = False
> [diff]
> git = 1
> unified = 0
> [ui]
> logtemplate = {rev}:{node|short}@{branch}({phase}) {desc|firstline}\n
> [extensions]
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
$ mkcommit() {
> echo "$1" > "$1"
> hg add "$1"
> hg ci -m "add $1"
> }
$ mkstack() {
> # Creates a stack of commit based on $1 with messages from $2, $3 ..
> hg update "$1" -C
> shift
> mkcommits $*
> }
$ mkcommits() {
> for i in $@; do mkcommit $i ; done
> }
orphan parent is obsolete with a single successor
=================================================
Test orphan resolution for a changeset orphan because its parent is obsolete
with one successor.
$ hg init test1
$ cd test1
$ mkcommits _a _b _c
$ hg up "desc(_b)"
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg amend -m "bprime"
1 new orphan changesets
$ hg log -G
@ 3:36050226a9b9@default(draft) bprime
|
| * 2:102002290587@default(draft) add _c
| |
| x 1:37445b16603b@default(draft) add _b
|/
o 0:135f39f4bd78@default(draft) add _a
$ hg evo --all --any --orphan
move:[2] add _c
atop:[3] bprime
working directory is now at fdcf3523a74d
$ hg log -G
@ 4:fdcf3523a74d@default(draft) add _c
|
o 3:36050226a9b9@default(draft) bprime
|
o 0:135f39f4bd78@default(draft) add _a
$ cd ..
orphan parent is obsolete with a multiple successors (reversed order)
=====================================================================
Test orphan resolution for a changeset orphan because its parent is obsolete
with multiple successors on the same branch but in reverse order (cross-split).
$ hg init test5
$ cd test5
$ mkcommits _a _b _c
$ hg up "desc(_a)"
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ mkcommits bprimesplit1 bprimesplit2
created new head
$ hg prune "desc(_b)" -s "desc(bprimesplit1) + desc(bprimesplit2)" --split
1 changesets pruned
1 new orphan changesets
$ hg up "desc(_a)"
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ mkcommits bsecondsplit1 bsecondsplit2
created new head
$ hg prune "desc(bprimesplit1)" -s "desc(bsecondsplit2)"
1 changesets pruned
1 new orphan changesets
$ hg prune "desc(bprimesplit2)" -s "desc(bsecondsplit1)"
1 changesets pruned
$ hg log -G
@ 6:59b942dbda14@default(draft) add bsecondsplit2
|
o 5:8ffdae67d696@default(draft) add bsecondsplit1
|
| * 2:102002290587@default(draft) add _c
| |
| x 1:37445b16603b@default(draft) add _b
|/
o 0:135f39f4bd78@default(draft) add _a
$ hg evo --all --any --orphan
move:[2] add _c
atop:[6] add bsecondsplit2
working directory is now at 98e3f21461ff
$ hg log -G
@ 7:98e3f21461ff@default(draft) add _c
|
o 6:59b942dbda14@default(draft) add bsecondsplit2
|
o 5:8ffdae67d696@default(draft) add bsecondsplit1
|
o 0:135f39f4bd78@default(draft) add _a
$ cd ..