tests/test-merge-halt.t

dirstate-guard: remove the feature

The dirstate guard duplicated some of the logic already implemented in the
transaction (and now the changing_* context).

However the feature was incomplete, for example, living only in memory meant we
could not recover from the hardest crash. In addition this duplicated with the
transaction logic meant things could go out of sync or step on each other.

Removing the feature now that we no longer needs it seems the safest.

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > [phases]
  > publish=False
  > [merge]
  > EOF

  $ hg init repo
  $ cd repo
  $ echo a > a
  $ echo b > b
  $ hg commit -qAm ab
  $ echo c >> a
  $ echo c >> b
  $ hg commit -qAm c
  $ hg up -q ".^"
  $ echo d >> a
  $ echo d >> b
  $ hg commit -qAm d

Testing on-failure=continue
  $ echo on-failure=continue >> $HGRCPATH
  $ hg rebase -s 1 -d 2 --tool false
  rebasing 1:1f28a51c3c9b "c"
  merging a
  merging a failed!
  merging b
  merging b failed!
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  U a
  U b

  $ hg rebase --abort
  rebase aborted

Testing on-failure=halt
  $ echo on-failure=halt >> $HGRCPATH
  $ hg rebase -s 1 -d 2 --tool false
  rebasing 1:1f28a51c3c9b "c"
  merging a
  merging a failed!
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  U a
  U b

  $ hg rebase --abort
  rebase aborted

Testing on-failure=prompt
  $ cat <<EOS >> $HGRCPATH
  > [merge]
  > on-failure=prompt
  > [ui]
  > interactive=1
  > EOS
  $ cat <<EOS | hg rebase -s 1 -d 2 --tool false
  > y
  > n
  > EOS
  rebasing 1:1f28a51c3c9b "c"
  merging a
  merging a failed!
  continue merge operation (yn)? y
  merging b
  merging b failed!
  continue merge operation (yn)? n
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  U a
  U b

  $ hg rebase --abort
  rebase aborted

Check that successful tool with failed post-check halts the merge
  $ cat <<EOS >> $HGRCPATH
  > [merge-tools]
  > true.check=changed
  > EOS
  $ cat <<EOS | hg rebase -s 1 -d 2 --tool true
  > y
  > n
  > n
  > EOS
  rebasing 1:1f28a51c3c9b "c"
  merging a
   output file a appears unchanged
  was merge successful (yn)? y
  merging b
   output file b appears unchanged
  was merge successful (yn)? n
  merging b failed!
  continue merge operation (yn)? n
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  R a
  U b

  $ hg rebase --abort
  rebase aborted

Check that conflicts with conflict check also halts the merge
  $ cat <<EOS >> $HGRCPATH
  > [merge-tools]
  > true.check=conflicts
  > true.premerge=keep
  > [merge]
  > on-failure=halt
  > EOS
  $ hg rebase -s 1 -d 2 --tool true
  rebasing 1:1f28a51c3c9b "c"
  merging a
  merging a failed!
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  U a
  U b

  $ hg rebase --abort
  rebase aborted

Check that always-prompt also can halt the merge
  $ cat <<EOS | hg rebase -s 1 -d 2 --tool true --config merge-tools.true.check=prompt
  > y
  > n
  > EOS
  rebasing 1:1f28a51c3c9b "c"
  merging a
  was merge of 'a' successful (yn)? y
  merging b
  was merge of 'b' successful (yn)? n
  merging b failed!
  unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
  [240]

  $ hg resolve --list
  R a
  U b

  $ hg rebase --abort
  rebase aborted

Check that successful tool otherwise allows the merge to continue
  $ hg rebase -s 1 -d 2 --tool echo --keep --config merge-tools.echo.premerge=keep
  rebasing 1:1f28a51c3c9b "c"
  merging a
  $TESTTMP/repo/a *a~base* *a~other* (glob)
  merging b
  $TESTTMP/repo/b *b~base* *b~other* (glob)

Check that unshelve isn't broken by halting the merge
  $ cat <<EOS >> $HGRCPATH
  > [extensions]
  > shelve =
  > [merge-tools]
  > false.check=conflicts
  > false.premerge=false
  > EOS
  $ echo foo > shelve_file1
  $ echo foo > shelve_file2
  $ hg ci -qAm foo
  $ echo bar >> shelve_file1
  $ echo bar >> shelve_file2
  $ hg shelve --list
  $ hg shelve
  shelved as default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo baz >> shelve_file1
  $ echo baz >> shelve_file2
  $ hg ci -m baz
  $ hg unshelve --tool false --config merge-tools.false.premerge=keep
  unshelving change 'default'
  rebasing shelved changes
  merging shelve_file1
  merging shelve_file1 failed!
  unresolved conflicts (see 'hg resolve', then 'hg unshelve --continue')
  [240]
  $ hg status --config commands.status.verbose=True
  M shelve_file1
  M shelve_file2
  ? shelve_file1.orig
  # The repository is in an unfinished *unshelve* state.
  
  # Unresolved merge conflicts:
  # 
  #     shelve_file1
  #     shelve_file2
  # 
  # To mark files as resolved:  hg resolve --mark FILE
  
  # To continue:    hg unshelve --continue
  # To abort:       hg unshelve --abort
  
  $ hg resolve --tool false --all --re-merge
  merging shelve_file1
  merging shelve_file1 failed!
  merge halted after failed merge (see hg resolve)
  [240]
  $ hg shelve --list
  default         (*s ago) * changes to: foo (glob)
  $ hg unshelve --abort
  unshelve of 'default' aborted