view tests/test-topic-dest.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).

  $ . "$TESTDIR/testlib/topic_setup.sh"

  $ hg init jungle
  $ cd jungle
  $ cat <<EOF >> .hg/hgrc
  > [extensions]
  > rebase=
  > histedit=
  > [phases]
  > publish=false
  > EOF
  $ cat <<EOF >> $HGRCPATH
  > [ui]
  > logtemplate = '{rev} ({topics}) {desc}\n'
  > EOF

  $ for x in alpha beta gamma delta ; do
  >   echo file $x >> $x
  >   hg add $x
  >   hg ci -m "c_$x"
  > done

Test NGTip feature
==================

Simple linear case

  $ echo babar >> jungle
  $ hg add jungle
  $ hg ci -t elephant -m babar
  active topic 'elephant' grew its first changeset
  (see 'hg help topics' for more information)

  $ hg log -G
  @  4 (elephant) babar
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg log -G -r 'ngtip(.)'
  o  3 () c_delta
  |
  ~
  $ hg log -r 'default'
  3 () c_delta


multiple heads with topic

  $ hg up "desc('c_beta')"
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ echo zephir >> jungle
  $ hg add jungle
  $ hg ci -t monkey -m zephir
  active topic 'monkey' grew its first changeset
  (see 'hg help topics' for more information)
  $ hg log -G
  @  5 (monkey) zephir
  |
  | o  4 (elephant) babar
  | |
  | o  3 () c_delta
  | |
  | o  2 () c_gamma
  |/
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg log -r 'ngtip(.)'
  3 () c_delta
  $ hg log -r 'default'
  3 () c_delta

one of the head is a valid tip

  $ hg up "desc('c_delta')"
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo epsilon >> epsilon
  $ hg add epsilon
  $ hg ci -m "c_epsilon"
  $ hg log -G
  @  6 () c_epsilon
  |
  | o  5 (monkey) zephir
  | |
  +---o  4 (elephant) babar
  | |
  o |  3 () c_delta
  | |
  o |  2 () c_gamma
  |/
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg log -r 'ngtip(.)'
  6 () c_epsilon
  $ hg log -r 'default'
  6 () c_epsilon

rebase destination
==================

rebase on branch ngtip

  $ hg up elephant
  switching to topic elephant
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg rebase
  rebasing 4:cb7ae72f4a80 elephant "babar"
  switching to topic elephant
  $ hg log -G
  @  7 (elephant) babar
  |
  o  6 () c_epsilon
  |
  | o  5 (monkey) zephir
  | |
  o |  3 () c_delta
  | |
  o |  2 () c_gamma
  |/
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg up monkey
  switching to topic monkey
  1 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg rebase
  rebasing 5:d832ddc604ec monkey "zephir"
  switching to topic monkey
  $ hg log -G
  @  8 (monkey) zephir
  |
  | o  7 (elephant) babar
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

Rebase on other topic heads if any

  $ hg up 'desc(c_delta)'
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo "General Huc" >> monkeyville
  $ hg add monkeyville
  $ hg ci -t monkey -m Huc
  $ hg log -G
  @  9 (monkey) Huc
  |
  | o  8 (monkey) zephir
  | |
  | | o  7 (elephant) babar
  | |/
  | o  6 () c_epsilon
  |/
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg rebase
  rebasing 9:d79a104e2902 tip monkey "Huc"
  $ hg log -G
  @  10 (monkey) Huc
  |
  o  8 (monkey) zephir
  |
  | o  7 (elephant) babar
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

merge destination
=================

  $ hg up 'ngtip(default)'
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg up default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo zeta >> zeta
  $ hg add zeta
  $ hg ci -m "c_zeta"
  $ hg log -G
  @  11 () c_zeta
  |
  | o  10 (monkey) Huc
  | |
  | o  8 (monkey) zephir
  |/
  | o  7 (elephant) babar
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ hg up elephant
  switching to topic elephant
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg rebase -d 'desc(c_zeta)' # make sure tip is elsewhere
  rebasing 7:8d0b77140b05 elephant "babar"
  switching to topic elephant
  $ hg up monkey
  switching to topic monkey
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg topic
     elephant (1 changesets)
   * monkey   (2 changesets)
  $ hg ci -m 'merge with default'
  $ hg topic
     elephant (1 changesets)
   * monkey   (3 changesets)
  $ hg log -G
  @    13 (monkey) merge with default
  |\
  | | o  12 (elephant) babar
  | |/
  | o  11 () c_zeta
  | |
  o |  10 (monkey) Huc
  | |
  o |  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  


Check pull --rebase
-------------------

(we broke it a some point)

  $ cd ..
  $ hg clone jungle other --rev '2'
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  new changesets 13ec05df14e1:6482f08916a5 (3 drafts)
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd other
  $ echo other > other
  $ hg add other
  $ hg ci -m 'c_other'
  $ hg pull -r default --rebase
  pulling from $TESTTMP/jungle (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files (+1 heads)
  new changesets 6f5edd7450bb:c9c03b99196b (3 drafts)
  rebasing 3:dbc48dd9e743 "c_other"
  $ hg log -G
  @  7 () c_other
  |
  o  6 () c_zeta
  |
  o  5 () c_epsilon
  |
  o  4 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  
  $ cd ../jungle


Default destination for update
===============================

initial setup

  $ hg up elephant
  switching to topic elephant
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo arthur >> jungle
  $ hg ci -m arthur
  $ echo pompadour >> jungle
  $ hg ci -m pompadour
  $ hg up 'roots(all())'
  0 files updated, 0 files merged, 6 files removed, 0 files unresolved
  $ hg log -G
  o  15 (elephant) pompadour
  |
  o  14 (elephant) arthur
  |
  | o    13 (monkey) merge with default
  | |\
  o---+  12 (elephant) babar
   / /
  | o  11 () c_zeta
  | |
  o |  10 (monkey) Huc
  | |
  o |  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  @  0 () c_alpha
  

testing default destination on a branch

  $ hg up
  5 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -G
  o  15 (elephant) pompadour
  |
  o  14 (elephant) arthur
  |
  | o    13 (monkey) merge with default
  | |\
  o---+  12 (elephant) babar
   / /
  | @  11 () c_zeta
  | |
  o |  10 (monkey) Huc
  | |
  o |  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

extra setup for topic
(making sure tip is not the topic)

  $ hg up 'desc(c_zeta)'
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 'eta' >> 'eta'
  $ hg add 'eta'
  $ hg commit -m 'c_eta'
  $ hg log -G
  @  16 () c_eta
  |
  | o  15 (elephant) pompadour
  | |
  | o  14 (elephant) arthur
  | |
  +---o  13 (monkey) merge with default
  | | |
  | o |  12 (elephant) babar
  |/ /
  o |  11 () c_zeta
  | |
  | o  10 (monkey) Huc
  | |
  | o  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

Testing default destination for topic

  $ hg up 'roots(topic(elephant))'
  switching to topic elephant
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg up
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -G
  o  16 () c_eta
  |
  | @  15 (elephant) pompadour
  | |
  | o  14 (elephant) arthur
  | |
  +---o  13 (monkey) merge with default
  | | |
  | o |  12 (elephant) babar
  |/ /
  o |  11 () c_zeta
  | |
  | o  10 (monkey) Huc
  | |
  | o  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

Testing default destination for topic

  $ hg up 'p1(roots(topic(elephant)))'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg topic elephant
  marked working directory as topic: elephant
  $ hg up
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -G
  o  16 () c_eta
  |
  | @  15 (elephant) pompadour
  | |
  | o  14 (elephant) arthur
  | |
  +---o  13 (monkey) merge with default
  | | |
  | o |  12 (elephant) babar
  |/ /
  o |  11 () c_zeta
  | |
  | o  10 (monkey) Huc
  | |
  | o  8 (monkey) zephir
  |/
  o  6 () c_epsilon
  |
  o  3 () c_delta
  |
  o  2 () c_gamma
  |
  o  1 () c_beta
  |
  o  0 () c_alpha
  

Default destination for histedit
================================

By default histedit should edit with the current topic only
(even when based on other draft

  $ hg phase 'desc(c_zeta)'
  11: draft
  $ HGEDITOR=cat hg histedit | grep pick
  pick e44744d9ad73 12 babar
  pick 38eea8439aee 14 arthur
  pick 411315c48bdc 15 pompadour
  #  p, pick = use commit

  $ cd ..

destination check: when active topic is empty

  $ hg init emptytopic
  $ cd emptytopic
  $ echo a > a
  $ hg ci -Am "added a"
  adding a
  $ hg topic foo
  marked working directory as topic: foo
  $ hg up
  clearing empty topic "foo"
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

destination check: when wdp has a topic but wdir has no active topic:

  $ hg topic foo
  marked working directory as topic: foo
  $ echo b > b
  $ hg ci -Am "added b"
  adding b
  active topic 'foo' grew its first changeset
  (see 'hg help topics' for more information)
  $ hg topic --clear
  $ hg up
  switching to topic foo
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved