view tests/test-evolve-effectflags.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).

Test the 'effect-flags' feature

Global setup
============

  $ . $TESTDIR/testlib/common.sh
  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = true
  > [phases]
  > publish=False
  > [extensions]
  > evolve =
  > rebase =
  > [experimental]
  > evolution.effect-flags = 1
  > EOF

  $ hg init $TESTTMP/effect-flags
  $ cd $TESTTMP/effect-flags
  $ mkcommit ROOT

amend touching the description only
-----------------------------------

  $ mkcommit A0
  $ hg amend -m "A1"

check result

  $ hg debugobsolete --rev .
  471f378eab4c5e25f6c77f785b27c936efb22874 fdf9bde5129a28d4548fadd3f62b265cdd3b7a2e 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '1', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  fdf9bde5129a (2) A1
  |    reworded(description) from 471f378eab4c using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  471f378eab4c (1) A0
  
  $ hg log --hidden -r "desc(A0)"
  changeset:   1:471f378eab4c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    reworded using amend as 2:fdf9bde5129a
  summary:     A0
  

amend touching the user only
----------------------------

  $ mkcommit B0
  $ hg amend -u "bob <[e-mail]>"

check result

  $ hg debugobsolete --rev .
  ef4a313b1e0ade55718395d80e6b88c5ccd875eb 5485c92d34330dac9d7a63dc07e1e3373835b964 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '16', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  5485c92d3433 (4) B0
  |    reauthored(user) from ef4a313b1e0a using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  ef4a313b1e0a (3) B0
  
  $ hg log --hidden -r "ef4a313b1e0a"
  changeset:   3:ef4a313b1e0a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    reauthored using amend as 4:5485c92d3433
  summary:     B0
  

amend touching the date only
----------------------------

  $ mkcommit B1
  $ hg amend -d "42 0"

check result

  $ hg debugobsolete --rev .
  2ef0680ff45038ac28c9f1ff3644341f54487280 4dd84345082e9e5291c2e6b3f335bbf8bf389378 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '32', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  4dd84345082e (6) B1
  |    date-changed(date) from 2ef0680ff450 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  2ef0680ff450 (5) B1
  
  $ hg log --hidden -r "2ef0680ff450"
  changeset:   5:2ef0680ff450
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    date-changed using amend as 6:4dd84345082e
  summary:     B1
  

amend touching the branch only
----------------------------

  $ mkcommit B2
  $ hg branch my-branch
  marked working directory as branch my-branch
  (branches are permanent and global, did you want a bookmark?)
  $ hg amend

check result

  $ hg debugobsolete --rev .
  bd3db8264ceebf1966319f5df3be7aac6acd1a8e 14a01456e0574f0e0a0b15b2345486a6364a8d79 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '64', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  14a01456e057 (8) B2
  |    branch-changed(branch) from bd3db8264cee using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  bd3db8264cee (7) B2
  
  $ hg log --hidden -r "bd3db8264cee"
  changeset:   7:bd3db8264cee
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    branch-changed using amend as 8:14a01456e057
  summary:     B2
  

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

rebase (parents change)
-----------------------

  $ mkcommit C0
  $ mkcommit D0
  $ hg rebase -r . -d 'desc(B0)'
  rebasing 10:c85eff83a034 tip "D0"

check result

  $ hg debugobsolete --rev .
  c85eff83a0340efd9da52b806a94c350222f3371 da86aa2f19a30d6686b15cae15c7b6c908ec9699 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  $ hg obslog .
  @  da86aa2f19a3 (11) D0
  |    rebased(parent) from c85eff83a034 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  c85eff83a034 (10) D0
  
  $ hg log --hidden -r "c85eff83a034"
  changeset:   10:c85eff83a034
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    rebased using rebase as 11:da86aa2f19a3
  summary:     D0
  

amend touching the diff
-----------------------

  $ mkcommit E0
  $ echo 42 >> E0
  $ hg amend

check result

  $ hg debugobsolete --rev .
  ebfe0333e0d96f68a917afd97c0a0af87f1c3b5f 75781fdbdbf58a987516b00c980bccda1e9ae588 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  75781fdbdbf5 (13) E0
  |    amended(content) from ebfe0333e0d9 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  ebfe0333e0d9 (12) E0
  
  $ hg log --hidden -r "ebfe0333e0d9"
  changeset:   12:ebfe0333e0d9
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    amended using amend as 13:75781fdbdbf5
  summary:     E0
  

amend with multiple effect (desc and meta)
-------------------------------------------

  $ mkcommit F0
  $ hg branch my-other-branch
  marked working directory as branch my-other-branch
  $ hg amend -m F1 -u "bob <[e-mail]>" -d "42 0"

check result

  $ hg debugobsolete --rev .
  fad47e5bd78e6aa4db1b5a0a1751bc12563655ff a94e0fd5f1c81d969381a76eb0d37ce499a44fae 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '113', 'operation': 'amend', 'user': 'test'}
  $ hg obslog .
  @  a94e0fd5f1c8 (15) F1
  |    rewritten(description, user, date, branch) from fad47e5bd78e using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  fad47e5bd78e (14) F0
  
  $ hg log --hidden -r "fad47e5bd78e"
  changeset:   14:fad47e5bd78e
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    rewritten using amend as 15:a94e0fd5f1c8
  summary:     F0
  

rebase not touching the diff
----------------------------

  $ cat << EOF > H0
  > 0
  > 1
  > 2
  > 3
  > 4
  > 5
  > 6
  > 7
  > 8
  > 9
  > 10
  > EOF
  $ hg add H0
  $ hg commit -m 'H0'
  $ echo "H1" >> H0
  $ hg commit -m "H1"
  $ hg up -r "desc(H0)"
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat << EOF > H0
  > H2
  > 0
  > 1
  > 2
  > 3
  > 4
  > 5
  > 6
  > 7
  > 8
  > 9
  > 10
  > EOF
  $ hg commit -m "H2"
  created new head
  $ hg rebase -s "desc(H1)" -d "desc(H2)" -t :merge3
  rebasing 17:b57fed8d8322 "H1"
  merging H0
  $ hg debugobsolete
  471f378eab4c5e25f6c77f785b27c936efb22874 fdf9bde5129a28d4548fadd3f62b265cdd3b7a2e 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '1', 'operation': 'amend', 'user': 'test'}
  ef4a313b1e0ade55718395d80e6b88c5ccd875eb 5485c92d34330dac9d7a63dc07e1e3373835b964 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '16', 'operation': 'amend', 'user': 'test'}
  2ef0680ff45038ac28c9f1ff3644341f54487280 4dd84345082e9e5291c2e6b3f335bbf8bf389378 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '32', 'operation': 'amend', 'user': 'test'}
  bd3db8264ceebf1966319f5df3be7aac6acd1a8e 14a01456e0574f0e0a0b15b2345486a6364a8d79 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '64', 'operation': 'amend', 'user': 'test'}
  c85eff83a0340efd9da52b806a94c350222f3371 da86aa2f19a30d6686b15cae15c7b6c908ec9699 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  ebfe0333e0d96f68a917afd97c0a0af87f1c3b5f 75781fdbdbf58a987516b00c980bccda1e9ae588 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
  fad47e5bd78e6aa4db1b5a0a1751bc12563655ff a94e0fd5f1c81d969381a76eb0d37ce499a44fae 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '113', 'operation': 'amend', 'user': 'test'}
  b57fed8d83228a8ae3748d8c3760a77638dd4f8c e509e2eb3df5d131ff7c02350bf2a9edd0c09478 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
  $ hg obslog tip
  o  e509e2eb3df5 (19) H1
  |    rebased(parent) from b57fed8d8322 using rebase by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  b57fed8d8322 (17) H1
  
  $ hg log --hidden -r "b57fed8d8322"
  changeset:   17:b57fed8d8322
  branch:      my-other-branch
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    rebased using rebase as 19:e509e2eb3df5
  summary:     H1
  
amend closing the branch should be detected as meta change
----------------------------------------------------------

  $ hg branch closedbranch
  marked working directory as branch closedbranch
  $ mkcommit G0
  $ mkcommit I0
  $ hg commit --amend --close-branch

check result

  $ hg obslog .
  @  12c6238b5e37 (22) I0
  |    meta-changed(meta) from 2f599e54c1c6 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
  |
  x  2f599e54c1c6 (21) I0
  
  $ hg log --hidden -r "2f599e54c1c6"
  changeset:   21:2f599e54c1c6
  branch:      closedbranch
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  obsolete:    meta-changed using amend as 22:12c6238b5e37
  summary:     I0