cmdstate: introduce a "saver" contextmanager and use it in place of save()
Previously, the state was only saved in some paths out of these functions. This
can be problematic, if the user ctrl-c's (or `kill -9`'s) the process, or we
exit out of `relocate` for anything besides the "expected" reason, we won't
record that we were in the middle of an evolve.
One of our users has discovered that this leaves hg in a weird state; the user
did something like this:
```
$ hg evolve
<something goes wrong with the merge tool, hits ctrl-c>
<deals with the merge conflicts>
$ hg evolve --continue
abort: no interrupted evolve to continue
$ hg evolve
abort: uncommitted changes
# Note: commands.status.verbose=True is set.
$ hg status
M foo
# The repository is in an unfinished *update* state.
# No unresolved merge conflicts
# To continue: hg update
```
The user did an `hg update`, but it didn't actually do anything besides take it
out of the unfinished update state (the files were still dirty in the working
directory).
+====================================================
+Tests the resolution of content divergence: metadata
+====================================================
This file intend to cover cases focused around meta data merging.
Setup
-----
$ cat >> $HGRCPATH <<EOF
> [alias]
> glog = log -GT "{rev}:{node|short} {desc|firstline}\n {phase} {instabilities}\n\n"
> [phases]
> publish = False
> [extensions]
> rebase =
> EOF
$ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
Check we preserve the author properly
-------------------------------------
Testing issue6113 to make sure that content-divergence resolution don't
replace initial author with the user running the resolution command:
$ hg init userfoo
$ cd userfoo
$ unset HGUSER
$ echo "[ui]" >> ./.hg/hgrc
$ echo "username = foo <foo@test.com>" >> ./.hg/hgrc
$ for ch in a b c; do
> echo $ch > $ch;
> hg add $ch;
> hg ci -m "added "$ch;
> done;
$ cd ..
$ hg init userbar
$ cd userbar
$ unset HGUSER
$ echo "[ui]" >> ./.hg/hgrc
$ echo "username = bar <bar@test.com>" >> ./.hg/hgrc
$ hg pull ./../userfoo -q
$ cd ../userfoo
$ hg up -r "desc('added b')"
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo c > c
$ echo e > e
$ hg add c e
$ hg ci -m "added c e"
created new head
$ hg up -r "desc('added b')"
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo cc > c
$ hg add c
$ hg ci -m "added c"
created new head
$ hg prune -r "min(desc('added c'))" -s "desc('added c e')"
1 changesets pruned
$ hg prune -r "min(desc('added c'))" -s "max(desc('added c'))" --hidden
1 changesets pruned
2 new content-divergent changesets
$ hg glog
@ 4:6c06cda6dc99 added c
| draft content-divergent
|
| * 3:0c9267e23c9d added c e
|/ draft content-divergent
|
o 1:1740ad2a1eda added b
| draft
|
o 0:f863f39764c4 added a
draft
$ cd ../userbar
$ hg pull ./../userfoo -q
2 new content-divergent changesets
$ hg evolve --content-divergent --any
merge:[3] added c e
with: [4] added c
base: [2] added c
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Make sure resultant cset don't replace the initial user with user running the command:
$ hg log -r tip
changeset: 5:443bd2972210
tag: tip
parent: 1:1740ad2a1eda
user: foo <foo@test.com>
date: Thu Jan 01 00:00:00 1970 +0000
summary: added c e
$ cd ..
Testing the three way merge logic for user of content divergent changesets
--------------------------------------------------------------------------
$ hg init mergeusers
$ cd mergeusers
$ for ch in a b c; do
> touch $ch
> hg add $ch
> hg ci -m "added "$ch
> done;
$ hg amend -m "updated c"
$ hg up -r 'desc("added c")' --hidden -q
updated to hidden changeset 2b3c31fe982d
(hidden revision '2b3c31fe982d' was rewritten as: 464e35020fd0)
working directory parent is obsolete! (2b3c31fe982d)
$ echo coco > c
1) when one user is different wrt base
--------------------------------------
Insert a diverging author name:
$ hg amend -u 'foouser'
2 new content-divergent changesets
Run automatic evolution:
$ hg evolve --content-divergent
merge:[3] updated c
with: [4] added c
base: [2] added c
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
working directory is now at 932d6ceb7672
$ hg log -r tip | grep "^user"
user: foouser
$ hg strip . -q --config extensions.strip=
2 new content-divergent changesets
2) when both the user are different wrt base
--------------------------------------------
$ hg up -r 'max(desc("updated c"))'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg amend -u 'baruser'
Run automatic evolution:
$ hg evolve --content-divergent
merge:[4] added c
with: [5] updated c
base: [2] added c
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
working directory is now at 202a770d8c1f
$ hg log -r tip | grep "^user"
user: baruser, foouser
$ cd ..