view tests/test-evolve-list.t @ 4848:535ab2609e45

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).

Set up some configs
  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

Test listing orphan changesets
  $ hg init r2
  $ cd r2
  $ echo a > a && hg ci -Am a
  adding a
  $ echo b > b && hg ci -Am b
  adding b
  $ echo c > c && hg ci -Am c
  adding c
  $ hg up 0
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo a >> a && hg ci --amend -m a
  2 new orphan changesets
  $ hg evolve --list
  d2ae7f538514: b
    orphan: cb9a9f314b8b (obsolete parent)
  
  177f92b77385: c
    orphan: d2ae7f538514 (orphan parent)
  
  $ cd ..

Test listing phase-divergent changesets
  $ hg init r3
  $ cd r3
  $ echo a > a && hg ci -Am a
  adding a
  $ echo b > b && hg ci --amend -m ab
  $ hg phase --public --rev 0 --hidden
  1 new phase-divergent changesets
  $ hg evolve --list
  88cc282e27fc: ab
    phase-divergent: cb9a9f314b8b (immutable precursor)
  
  $ cd ..

Test listing content-divergent changesets
  $ hg init r1
  $ cd r1
  $ echo a > a && hg ci -Am a
  adding a
  $ hg up 0
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo b > b && hg ci -Am b
  adding b
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo c > c && hg ci -Am c
  adding c
  created new head
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo d > d && hg ci -Am d
  adding d
  created new head
  $ hg rebase -s 1 -d 2
  rebasing 1:d2ae7f538514 "b"
  $ hg rebase -s 1 -d 3 --hidden --config experimental.allowdivergence=True
  rebasing 1:d2ae7f538514 "b"
  2 new content-divergent changesets
  $ hg evolve --list
  c882616e9d84: b
    content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
  
  a922b3733e98: b
    content-divergent: c882616e9d84 (draft) (precursor d2ae7f538514)
  
  $ hg evolve --list --rev c882616e9d84
  c882616e9d84: b
    content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
  
  $ hg phase -p a922b3733e98
  $ hg evolve --list
  c882616e9d84: b
    content-divergent: a922b3733e98 (public) (precursor d2ae7f538514)
  
  $ cd ..