view tests/test-evolve-continue.t @ 5777:c5dfbbe4363d

evolve: when relocating, optionally first try to do it using in-memory merge

This patch adds a config option to let run evolve's relocation step
using in-memory merge. It is disabled by default. When the option is
on, the relocation is first attempted in memory. If that fails because
of merge conflicts, it retries that commit in the working copy.

There are a few reasons that I made it configurable. The most
important one is that the precommit hook won't trigger when using
in-memory merge. Another reason is that it lets us roll out the
feature slowly to our users at Google.

For now, we also update the working copy after creating the commit (in the
successful case, when there are no merge conflicts). The next patch will make it
so we don't do that update.

Because of the unnecessary working-copy update, this patch doesn't
provide any benefit on its own. Evolving 29 commits that each change
one line in the hg slows down from ~4.5s to ~4.8s when the config
option is on.

I've added `#testcases inmemory ondisk` to select `.t` files. Almost
all differences are because of the new "hit merge conflicts" message
and retrying the merge. There's also one difference in
`test-stabilize-order.t` caused by the different order of working copy
updates (we now update the working copy at the end).

Testing the continue functionality of `hg evolve`

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = True
  > [alias]
  > glog = log -GT "{rev}:{node|short} {desc}\n ({bookmarks}) {phase}"
  > [extensions]
  > rebase =
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

#testcases inmemory ondisk
#if inmemory
  $ cat >> $HGRCPATH <<EOF
  > [experimental]
  > evolution.in-memory = yes
  > EOF
#endif

Setting up the repo

  $ hg init repo
  $ cd repo
  $ echo ".*\.orig" > .hgignore
  $ hg add .hgignore
  $ hg ci -m "added hgignore"
  $ for ch in a b c d; do echo foo>$ch; hg add $ch; hg ci -qm "added "$ch; done

  $ hg glog
  @  4:c41c793e0ef1 added d
  |   () draft
  o  3:ca1b80f7960a added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Simple case of evolve --continue

  $ hg up ca1b80f7960a
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo bar > d
  $ hg add d
  $ hg amend
  1 new orphan changesets
  $ hg glog
  @  5:cb6a2ab625bb added c
  |   () draft
  | *  4:c41c793e0ef1 added d
  | |   () draft
  | x  3:ca1b80f7960a added c
  |/    () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --all
  move:[4] added d
  atop:[5] added c
  merging d (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging d
  warning: conflicts while merging d! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo foo > d
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue

  $ hg evolve --continue
  evolving 4:c41c793e0ef1 "added d"

  $ hg glog
  o  6:2a4e03d422e2 added d
  |   () draft
  @  5:cb6a2ab625bb added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg up
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

Case when conflicts resolution lead to empty wdir in evolve --continue

  $ echo foo > e
  $ hg ci -Aqm "added e"
  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [6] added d
  $ echo bar > e
  $ hg add e
  $ hg amend
  1 new orphan changesets

  $ hg glog
  @  8:00a5c774cc37 added d
  |   () draft
  | *  7:ad0a59d83efe added e
  | |   () draft
  | x  6:2a4e03d422e2 added d
  |/    () draft
  o  5:cb6a2ab625bb added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --update
  move:[7] added e
  atop:[8] added d
  merging e (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging e
  warning: conflicts while merging e! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo bar > e
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg diff

  $ hg evolve --continue
  evolving 7:ad0a59d83efe "added e"
  evolution of 7:ad0a59d83efe created no changes to commit

  $ hg glog
  @  8:00a5c774cc37 added d
  |   () draft
  o  5:cb6a2ab625bb added c
  |   () draft
  o  2:b1661037fa25 added b
  |   () draft
  o  1:c7586e2a9264 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Case when there are a lot of revision to continue

  $ hg up c7586e2a9264
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ echo bar > b
  $ hg add b
  $ hg amend
  3 new orphan changesets

  $ hg evolve --all --update
  move:[2] added b
  atop:[9] added a
  merging b (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo foo > b
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 2:b1661037fa25 "added b"
  move:[5] added c
  atop:[10] added b
  move:[8] added d
  working directory is now at 6642d2c9176e

  $ hg glog
  @  12:6642d2c9176e added d
  |   () draft
  o  11:95665a2de664 added c
  |   () draft
  o  10:87f748868183 added b
  |   () draft
  o  9:53b632d203d8 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Conlicts -> resolve -> continue -> conflicts -> resolve -> continue
Test multiple conflicts in one evolve

  $ for ch in f g h; do echo foo > $ch; hg add $ch; hg ci -m "added "$ch; done;

  $ hg glog
  @  15:09becba8f97d added h
  |   () draft
  o  14:5aa7b2bbd944 added g
  |   () draft
  o  13:be88f889b6dc added f
  |   () draft
  o  12:6642d2c9176e added d
  |   () draft
  o  11:95665a2de664 added c
  |   () draft
  o  10:87f748868183 added b
  |   () draft
  o  9:53b632d203d8 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg up 95665a2de664
  1 files updated, 0 files merged, 4 files removed, 0 files unresolved

  $ echo bar > f
  $ echo bar > h
  $ hg add f h
  $ hg amend
  4 new orphan changesets

  $ hg glog
  @  16:645135c5caa4 added c
  |   () draft
  | *  15:09becba8f97d added h
  | |   () draft
  | *  14:5aa7b2bbd944 added g
  | |   () draft
  | *  13:be88f889b6dc added f
  | |   () draft
  | *  12:6642d2c9176e added d
  | |   () draft
  | x  11:95665a2de664 added c
  |/    () draft
  o  10:87f748868183 added b
  |   () draft
  o  9:53b632d203d8 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg evolve --all --update
  move:[12] added d
  atop:[16] added c
  move:[13] added f
  merging f (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging f
  warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo foo > f
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 13:be88f889b6dc "added f"
  move:[14] added g
  atop:[18] added f
  move:[15] added h
  merging h (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging h
  warning: conflicts while merging h! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo foo > h
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 15:09becba8f97d "added h"
  working directory is now at 3ba9d3d1b089

Make sure, confirmopt is respected while continue

  $ hg glog
  @  20:3ba9d3d1b089 added h
  |   () draft
  o  19:981e615b14ca added g
  |   () draft
  o  18:5794f1a3cbb2 added f
  |   () draft
  o  17:e47537da02b3 added d
  |   () draft
  o  16:645135c5caa4 added c
  |   () draft
  o  10:87f748868183 added b
  |   () draft
  o  9:53b632d203d8 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

  $ hg up 5794f1a3cbb2
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo bar > g
  $ hg add g
  $ hg amend
  2 new orphan changesets

  $ hg evolve --all --update --confirm << EOF
  > y
  > EOF
  move:[19] added g
  atop:[21] added f
  perform evolve? [Ny] y
  merging g (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging g
  warning: conflicts while merging g! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

  $ echo foo > g
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue

  $ hg evolve --continue << EOF
  > y
  > EOF
  evolving 19:981e615b14ca "added g"
  move:[20] added h
  atop:[22] added g
  perform evolve? [Ny] y
  working directory is now at af6bd002a48d

  $ hg glog
  @  23:af6bd002a48d added h
  |   () draft
  o  22:d2c94a8f44bd added g
  |   () draft
  o  21:9849fa96c885 added f
  |   () draft
  o  17:e47537da02b3 added d
  |   () draft
  o  16:645135c5caa4 added c
  |   () draft
  o  10:87f748868183 added b
  |   () draft
  o  9:53b632d203d8 added a
  |   () draft
  o  0:8fa14d15e168 added hgignore
      () draft

Testing `evolve --continue` after `hg next --evolve`

  $ hg up .^^
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo foobar > g
  $ hg amend
  2 new orphan changesets

  $ hg next --evolve
  move:[22] added g
  atop:[24] added f
  merging g (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging g
  warning: conflicts while merging g! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]
  $ echo foo > g
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 22:d2c94a8f44bd "added g"

Testing that interrupted evolve don't get confused about copies (issue5930):
----------------------------------------------------------------------------

  $ cd ..
  $ hg init issue5930
  $ cd issue5930
  $ echo a > a
  $ hg ci -Am "added a"
  adding a
  $ hg cp a b
  $ hg ci -m "rename a to b"

  $ hg up 0 -q
  $ echo c > c
  $ hg ci -Am "added c"
  adding c
  created new head

  $ echo d > c
  $ echo d > d
  $ hg ci -Am "added d, modified c"
  adding d
  $ hg up .^
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg log -G -T "{rev} {desc}\n"
  o  3 added d, modified c
  |
  @  2 added c
  |
  | o  1 rename a to b
  |/
  o  0 added a
  
  $ hg rebase -r . -d 1
  rebasing 2:29edef26570b "added c"
  1 new orphan changesets
  $ echo conflict > c
  $ hg amend

  $ hg log -G -T "{rev} {desc}\n"
  @  5 added c
  |
  | *  3 added d, modified c
  | |
  | x  2 added c
  | |
  o |  1 rename a to b
  |/
  o  0 added a
  

  $ hg evolve
  move:[3] added d, modified c
  atop:[5] added c
  merging c (inmemory !)
  hit merge conflicts; retrying merge in working copy (inmemory !)
  merging c
  warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]

Status mentions file 'b' (copied from 'a') here, even though it wasn't
affected by the evolved changeset (nor was 'a')

  $ hg st -C
  M c
  A d
  ? c.orig

  $ cd ..
  $ hg init transitive-renames
  $ cd transitive-renames
  $ echo 1 > a
  $ echo 1 > b
  $ hg ci -Aqm initial
  $ echo 2 > a
  $ hg mv b c
  $ hg ci -m 'rename b to c'
  $ echo 3 > a
  $ hg mv c d
  $ hg ci -m 'rename c to d'
  $ hg prev -q
  $ echo 2b > a
  $ hg amend -q
  1 new orphan changesets
  $ hg ev -q
  warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]
  $ hg st -C
  M a
  A d
    c
  R c
  ? a.orig