view tests/test-rebase-transaction.t @ 40417:49c7b701fdc2 stable

phase: add an archived phase

This phase allows for hidden changesets in the "user space". It differs from
the "internal" phase which is intended for internal by-product only. There
have been discussions at the 4.8 sprint to use such phase to speedup cleanup
after history rewriting operation.

Shipping it in the same release as the 'internal-phase' groups the associated
`requires` entry. The important bit is to have support for this phase in the
earliest version of mercurial possible. Adding the UI to manipulate this new
phase later seems fine.

The current plan for archived usage and user interface are as follow. On a
repository with internal-phase on and evolution off:

* history rewriting command set rewritten changeset in the archived phase.
  (This mean updating the cleanupnodes method).
* keep `hg unbundle .hg/strip-backup/X.hg` as a way to restore changeset for
  now
  (backup bundle need to contains phase data)
* [maybe] add a `hg strip --soft` advance flag
  (a light way to expose the feature without getting in the way of a better
  UI)

Mercurial 4.8 freeze is too close to get the above in by then.

We don't introduce a new repository `requirement` as we reuse the one
introduced with the 'archived' phase during the 4.8 cycle.

Rebasing using a single transaction

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > drawdag=$TESTDIR/drawdag.py
  > 
  > [rebase]
  > singletransaction=True
  > 
  > [phases]
  > publish=False
  > 
  > [alias]
  > tglog = log -G --template "{rev}: {desc}"
  > EOF

Check that a simple rebase works

  $ hg init simple && cd simple
  $ hg debugdrawdag <<'EOF'
  >   Z
  >   |
  >   | D
  >   | |
  >   | C
  >   | |
  >   Y B
  >   |/
  >   A
  > EOF
- We should only see one status stored message. It comes from the start.
  $ hg rebase --debug -b D -d Z | grep 'status stored'
  rebase status stored
  $ hg tglog
  o  5: D
  |
  o  4: C
  |
  o  3: B
  |
  o  2: Z
  |
  o  1: Y
  |
  o  0: A
  
  $ cd ..

Check that --collapse works

  $ hg init collapse && cd collapse
  $ hg debugdrawdag <<'EOF'
  >   Z
  >   |
  >   | D
  >   | |
  >   | C
  >   | |
  >   Y B
  >   |/
  >   A
  > EOF
- We should only see two status stored messages. One from the start, one from
- cmdutil.commitforceeditor() which forces tr.writepending()
  $ hg rebase --collapse --debug -b D -d Z | grep 'status stored'
  rebase status stored
  rebase status stored
  $ hg tglog
  o  3: Collapsed revision
  |  * B
  |  * C
  |  * D
  o  2: Z
  |
  o  1: Y
  |
  o  0: A
  
  $ cd ..

With --collapse, check that conflicts can be resolved and rebase can then be
continued

  $ hg init collapse-conflict && cd collapse-conflict
  $ hg debugdrawdag <<'EOF'
  >   Z   # Z/conflict=Z
  >   |
  >   | D
  >   | |
  >   | C # C/conflict=C
  >   | |
  >   Y B
  >   |/
  >   A
  > EOF
  $ hg rebase --collapse -b D -d Z
  rebasing 1:112478962961 "B" (B)
  rebasing 3:c26739dbe603 "C" (C)
  merging conflict
  warning: conflicts while merging conflict! (edit, then use 'hg resolve --mark')
  unresolved conflicts (see hg resolve, then hg rebase --continue)
  [1]
  $ hg tglog
  o  5: D
  |
  | @  4: Z
  | |
  @ |  3: C
  | |
  | o  2: Y
  | |
  o |  1: B
  |/
  o  0: A
  
  $ hg st
  M C
  M conflict
  A B
  ? conflict.orig
  $ echo resolved > conflict
  $ hg resolve -m
  (no more unresolved files)
  continue: hg rebase --continue
  $ hg rebase --continue
  already rebased 1:112478962961 "B" (B) as 79bc8f4973ce
  rebasing 3:c26739dbe603 "C" (C)
  rebasing 5:d24bb333861c "D" (D tip)
  saved backup bundle to $TESTTMP/collapse-conflict/.hg/strip-backup/112478962961-b5b34645-rebase.hg
  $ hg tglog
  o  3: Collapsed revision
  |  * B
  |  * C
  |  * D
  o  2: Z
  |
  o  1: Y
  |
  o  0: A
  
  $ cd ..

With --collapse, check that the commit message editing can be canceled and
rebase can then be continued

  $ hg init collapse-cancel-editor && cd collapse-cancel-editor
  $ hg debugdrawdag <<'EOF'
  >   Z
  >   |
  >   | D
  >   | |
  >   | C
  >   | |
  >   Y B
  >   |/
  >   A
  > EOF
  $ HGEDITOR=false hg --config ui.interactive=1 rebase --collapse -b D -d Z
  rebasing 1:112478962961 "B" (B)
  rebasing 3:26805aba1e60 "C" (C)
  rebasing 5:f585351a92f8 "D" (D tip)
  transaction abort!
  rollback completed
  abort: edit failed: false exited with status 1
  [255]
  $ hg tglog
  o  5: D
  |
  | o  4: Z
  | |
  o |  3: C
  | |
  | o  2: Y
  | |
  o |  1: B
  |/
  o  0: A
  
  $ hg rebase --continue
  rebasing 1:112478962961 "B" (B)
  rebasing 3:26805aba1e60 "C" (C)
  rebasing 5:f585351a92f8 "D" (D tip)
  saved backup bundle to $TESTTMP/collapse-cancel-editor/.hg/strip-backup/112478962961-cb2a9b47-rebase.hg
  $ hg tglog
  o  3: Collapsed revision
  |  * B
  |  * C
  |  * D
  o  2: Z
  |
  o  1: Y
  |
  o  0: A
  
  $ cd ..