annotate tests/test-evolve-inmemory.t @ 5778:84affb254cdf

evolvecmd: don't update working copy when using in-memory merge

This patch removes the update of the working copy after each in-memory
merge and only instead updates the working copy afterwards (if
requested).

There's still no significant speedup in the hg repo. It seems that the
cost of updating the working copy is not large enough to make much
difference, and the cost of reading and updating obsmarkers is
relatively high in that repo. A significant part of the time (~35%) is
spent in `repoview.computehidden()` because it is recalculated for
every commit (seems like potential for improvement).

I made similar changes in the mozilla-unified repo (which has a
significantly larger working copy), by adding 10 commits each changing
one line of a file. There, evolving 9 of those commits took 34s before
this patch and 20s after. I measured similar speedups in an internal
repo (9.0s -> 5.2s).

Tests running `hg evolve` with in-memory merge.

  $ . $TESTDIR/testlib/common.sh

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > evolve =
  > drawdag=$RUNTESTDIR/drawdag.py
  > [alias]
  > glog = log -G -T '{rev}:{node|short} {separate(" ", phase, tags)}\n{desc|firstline}'
  > [experimental]
  > evolution.in-memory = yes
  > EOF

Test evolving a single orphan

  $ hg init single-orphan
  $ cd single-orphan
  $ hg debugdrawdag <<'EOS'
  >     C  # C/c = c\n
  > B2  |  # B2/b = b2\n
  > |   B  # B/b = b\n
  >  \ /   # replace: B -> B2
  >   A
  > EOS
  1 new orphan changesets
  $ hg evolve
  move:[3] C
  atop:[2] B2
  $ hg glog
  o  4:52da76e91abb draft tip
  |  C
  | x  3:bc77848cde3a draft C
  | |  C
  o |  2:377a194b9b8a draft B2
  | |  B2
  | x  1:830b6315076c draft B
  |/   B
  o  0:426bada5c675 draft A
     A
  $ hg cat -r tip b c
  b2
  c
  $ cd ..

Test that in-memory evolve works when there are conflicts
and after continuing.

  $ hg init conflicts
  $ cd conflicts
  $ hg debugdrawdag <<'EOS'
  >     E  # E/e = e\n
  >     |
  >     D  # D/b = d\n
  >     |
  >     C  # C/c = c\n
  > B2  |  # B2/b = b2\n
  > |   B  # B/b = b\n
  >  \ /   # replace: B -> B2
  >   A
  > EOS
  3 new orphan changesets
  $ hg evolve
  move:[3] C
  atop:[2] B2
  move:[4] D
  merging b
  hit merge conflicts; retrying merge in working copy
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [240]
  $ hg glog
  @  6:52da76e91abb draft tip
  |  C
  | *  5:eae7899dd92b draft E
  | |  E
  | %  4:57e51f6a6d36 draft D
  | |  D
  | x  3:bc77848cde3a draft C
  | |  C
  o |  2:377a194b9b8a draft B2
  | |  B2
  | x  1:830b6315076c draft B
  |/   B
  o  0:426bada5c675 draft A
     A
  $ cat c
  c
  $ cat b
  <<<<<<< destination: 52da76e91abb - test: C
  b2
  =======
  d
  >>>>>>> evolving:    57e51f6a6d36 D - test: D
  $ echo d2 > b
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue
  $ hg evolve --continue
  evolving 4:57e51f6a6d36 "D"
  move:[5] E
  atop:[7] D
  $ hg glog
  o  8:3c658574f8ed draft tip
  |  E
  o  7:16e609b952e8 draft
  |  D
  o  6:52da76e91abb draft
  |  C
  | x  5:eae7899dd92b draft E
  | |  E
  | x  4:57e51f6a6d36 draft D
  | |  D
  | x  3:bc77848cde3a draft C
  | |  C
  o |  2:377a194b9b8a draft B2
  | |  B2
  | x  1:830b6315076c draft B
  |/   B
  o  0:426bada5c675 draft A
     A
  $ hg cat -r tip b c e
  d2
  c
  e
  $ cd ..

Test that in-memory merge is disabled if there's a precommit hook

  $ hg init precommit-hook
  $ cd precommit-hook
  $ hg debugdrawdag <<'EOS'
  >     C  # C/c = c\n
  > B2  |  # B2/b = b2\n
  > |   B  # B/b = b\n
  >  \ /   # replace: B -> B2
  >   A
  > EOS
  1 new orphan changesets
  $ cat >> .hg/hgrc <<EOF
  > [hooks]
  > precommit = echo "running precommit hook"
  > EOF
The hook is not run with in-memory=force
  $ hg co B2
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg evolve --config experimental.evolution.in-memory=force --update
  move:[3] C
  atop:[2] B2
  working directory is now at 52da76e91abb
  $ hg glog
  @  4:52da76e91abb draft tip
  |  C
  | x  3:bc77848cde3a draft C
  | |  C
  o |  2:377a194b9b8a draft B2
  | |  B2
  | x  1:830b6315076c draft B
  |/   B
  o  0:426bada5c675 draft A
     A
  $ hg co tip^
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg amend -m B3
  1 new orphan changesets
The hook is run with in-memory=yes
  $ hg next --config experimental.evolution.in-memory=yes
  move:[4] C
  atop:[5] B3
  running precommit hook
  working directory is now at aeee7323c054
  $ hg glog
  @  6:aeee7323c054 draft tip
  |  C
  o  5:908ce5f9d7eb draft
  |  B3
  | x  3:bc77848cde3a draft C
  | |  C
  +---x  2:377a194b9b8a draft B2
  | |    B2
  | x  1:830b6315076c draft B
  |/   B
  o  0:426bada5c675 draft A
     A