view tests/test-evolve-interrupted.t @ 5619:5673730db8d5 stable

evolve: clean merge state when content divergence resolution has no changes

This patch backs out b723805d7fe1, which only hid the problem.

Usually mergestate is cleared (or should be cleared) when creating a new
changeset, but sometimes there are situations when there's nothing to commit.

When solving content divergence resulted in no changes and no new changesets
were created, mergestate was left untouched. That's a problem because sometimes
mergestate contains files with conflicts that were already resolved by user,
and such mergestate only applies to the current wdir parent. Since evolve has
already dealt with the current wdir parent successfully when it reached this
code, this is a good place to clean the mergestate.

Quitting an evolve in the middle (via ctrl-c or something) can leave things in a
weird intermediate state where hg thinks we're in the middle of an update
operation (or even just leave the 'merge' directory around without actually
indicating we're in the middle of *any* operation).

  $ . $TESTDIR/testlib/common.sh

  $ cat << EOF >> $HGRCPATH
  > [extensions]
  > rebase =
  > evolve =
  > [alias]
  > l = log -G -T'{rev} {desc}'
  > EOF

  $ hg init interrupted-orphan
  $ cd interrupted-orphan

  $ echo apricot > a
  $ hg ci -qAm apricot

  $ echo banana > b
  $ hg ci -qAm banana

Let's go back to amend 0 and make an orphan out of 1 (and a merge conflict to
test with)

  $ hg up -q 0
  $ echo blueberry > b
  $ hg l
  o  1 banana
  |
  @  0 apricot
  
  $ hg ci --amend -qAm 'apricot and blueberry'
  1 new orphan changesets
  $ hg l
  @  2 apricot and blueberry
  
  *  1 banana
  |
  x  0 apricot
  

  $ hg evolve --update --config hooks.precommit=false --config ui.merge=:other
  move:[1] banana
  atop:[2] apricot and blueberry
  transaction abort!
  rollback completed
  abort: precommit hook exited with status 1
  [255]
  $ hg l
  @  2 apricot and blueberry
  
  *  1 banana
  |
  x  0 apricot
  
  $ cat b
  banana

  $ hg status --config commands.status.verbose=True
  M b
  # The repository is in an unfinished *evolve* state.
  
  # No unresolved merge conflicts.
  
  # To continue:    hg evolve --continue
  # To abort:       hg evolve --abort
  # To stop:        hg evolve --stop
  # (also see `hg help evolve.interrupted`)
  

  $ ls .hg/evolvestate
  .hg/evolvestate

  $ cat b
  banana

  $ hg l
  @  2 apricot and blueberry
  
  *  1 banana
  |
  x  0 apricot
  

Test various methods of handling that unfinished state
  $ hg evolve --abort
  evolve aborted
  working directory is now at e1989e4b1526
  $ test -f .hg/evolvestate
  [1]
  $ cat b
  blueberry
  $ hg l
  @  2 apricot and blueberry
  
  *  1 banana
  |
  x  0 apricot
  

  $ hg evolve --update --config hooks.precommit=false --config ui.merge=:other
  move:[1] banana
  atop:[2] apricot and blueberry
  transaction abort!
  rollback completed
  abort: precommit hook exited with status 1
  [255]
  $ cat b
  banana
  $ hg evolve --stop
  stopped the interrupted evolve
  working directory is now at e1989e4b1526
  $ cat .hg/evolvestate
  cat: .hg/evolvestate: No such file or directory
  [1]
  $ cat b
  blueberry
  $ hg l
  @  2 apricot and blueberry
  
  *  1 banana
  |
  x  0 apricot
  

  $ hg evolve --update --config hooks.precommit=false --config ui.merge=:other
  move:[1] banana
  atop:[2] apricot and blueberry
  transaction abort!
  rollback completed
  abort: precommit hook exited with status 1
  [255]
  $ hg evolve --continue
  evolving 1:e0486f65907d "banana"
  working directory is now at bd5ec7dfc2af
  $ cat .hg/evolvestate
  cat: .hg/evolvestate: No such file or directory
  [1]
  $ cat b
  banana
  $ hg l
  @  3 banana
  |
  o  2 apricot and blueberry