view tests/test-touch.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).

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > logtemplate={rev}:{node|short} {desc}\n
  > [defaults]
  > amend=-d "0 0"
  > [alias]
  > glog = log -GT "{rev}: {desc}"
  > [extensions]
  > hgext.rebase=
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ hg init repo
  $ cd repo
  $ echo A > a
  $ hg add a
  $ hg commit -m a

Basic usage

  $ hg log -G
  @  0:[0-9a-f]{12} a (re)
  
  $ hg touch .
  $ hg log -G
  @  1:[0-9a-f]{12} a (re)
  


Revive usage

  $ echo A > b
  $ hg add b
  $ hg commit -m ab --amend
  $ hg up --hidden 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  updated to hidden changeset * (glob)
  (hidden revision '*' was rewritten as: *) (glob)
  working directory parent is obsolete! (*) (glob)
  (use 'hg evolve' to update to its successor: *) (glob)
  $ hg log -G
  o  2:[0-9a-f]{12} ab (re)
  
  @  1:[0-9a-f]{12} a (re)
  
  $ hg touch .
  [1] a
  reviving this changeset will create divergence unless you make a duplicate.
  (a)llow divergence or (d)uplicate the changeset?  a
  2 new content-divergent changesets
  $ hg log -G
  @  3:[0-9a-f]{12} a (re)
  
  \*  2:[0-9a-f]{12} ab (re)
  
  $ hg prune 3
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory is now at 000000000000
  1 changesets pruned

Duplicate

  $ hg touch --duplicate .
  $ hg log -G
  @  4:[0-9a-f]{12} (re)
  
  o  2:[0-9a-f]{12} ab (re)
  

Multiple touch

  $ echo C > c
  $ hg add c
  $ hg commit -m c
  $ echo D > d
  $ hg add d
  $ hg commit -m d
  $ hg log -G
  @  6:[0-9a-f]{12} d (re)
  |
  o  5:[0-9a-f]{12} c (re)
  |
  o  4:[0-9a-f]{12} (re)
  
  o  2:[0-9a-f]{12} ab (re)
  
  $ hg touch .^:.
  $ hg log -G
  @  8:[0-9a-f]{12} d (re)
  |
  o  7:[0-9a-f]{12} c (re)
  |
  o  4:[0-9a-f]{12} (re)
  
  o  2:[0-9a-f]{12} ab (re)
  

check move data kept after rebase on touch:

  $ touch gna1
  $ hg commit -Am gna1
  adding gna1
  $ hg mv gna1 gna2
  $ hg commit -m move
  $ hg st -C --change=tip
  A gna2
    gna1
  R gna1
  $ hg up .^
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  $ hg touch
  1 new orphan changesets

  $ hg log -G --hidden
  @  11:[0-9a-f]{12} gna1 (re)
  |
  . \*  10:[0-9a-f]{12} move (re)
  | |
  . x  9:[0-9a-f]{12} gna1 (re)
  |/
  o  8:[0-9a-f]{12} d (re)
  |
  o  7:[0-9a-f]{12} c (re)
  |
  . x  6:[0-9a-f]{12} d (re)
  | |
  . x  5:[0-9a-f]{12} c (re)
  |/
  o  4:[0-9a-f]{12} (re)
  
  x  3:[0-9a-f]{12} a (re)
  
  o  2:[0-9a-f]{12} ab (re)
  
  x  1:[0-9a-f]{12} a (re)
  
  x  0:[0-9a-f]{12} a (re)
  

  $ hg rebase -s 10 -d 11
  rebasing 10:[0-9a-f]{12} "move" (re)
  $ hg st -C --change=tip
  A gna2
    gna1
  R gna1

check that the --duplicate option does not create divergence

  $ hg touch --duplicate 10 --hidden
  1 new orphan changesets

check that reviving a changeset with no successor does not show the prompt

  $ hg prune 13
  1 changesets pruned
  $ hg touch 13 --hidden --note "testing with no successor"
  1 new orphan changesets
  $ hg debugobsolete
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'touch', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '9', 'operation': 'amend', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'touch', 'user': 'test'} (glob)
  * 0 {0000000000000000000000000000000000000000} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'touch', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'touch', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'touch', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'} (glob)
  * 0 {*} (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'operation': 'prune', 'user': 'test'} (glob)
  * * 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '0', 'note': 'testing with no successor', 'operation': 'touch', 'user': 'test'} (glob)
  $ hg obslog -r 13 --no-origin --hidden
  x  [0-9a-f]{12} (.*) move (re)
       pruned using prune by test (Thu Jan 01 00:00:00 1970 +0000)
       rewritten(.*) as [0-9a-f]{12} using touch by test (.*) (re)
         note: testing with no successor
  

Public phase

  $ hg phase --public -r 2
  $ hg touch 2
  abort: cannot touch public changesets: * (glob)
  (see 'hg help phases' for details)
  [255]
  $ hg touch --duplicate 2

Reviving merge commit

  $ hg up 12
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge 15
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m merge
  $ hg st --change .
  A a
  A b
  $ hg prune -r .
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  working directory is now at * (glob)
  1 changesets pruned
  $ hg touch 16 --hidden
  $ hg glog -r '12+15+17'
  o    17: merge
  |\
  | o  15: ab
  |
  @  12: move
  |
  ~
  $ hg st --change 17
  A a
  A b

  $ cd ..

Make sure touch doesn't fail to warn about divergence (issue6107)

  $ hg init touchdiv
  $ cd touchdiv
  $ echo c > c
  $ hg add c
  $ hg ci -m "added c"

  $ hg amend -m "modified c"
  $ hg prune . -q

  $ hg touch -r "desc('added c')" --hidden
  $ hg touch -r "desc('modified c')" --hidden
  [1] modified c
  reviving this changeset will create divergence unless you make a duplicate.
  (a)llow divergence or (d)uplicate the changeset?  a
  2 new content-divergent changesets

But -A allows divergence

  $ hg touch -r "desc('modified c')" --hidden -A
  1 new content-divergent changesets

  $ cd ..