view tests/test-topic-fold.t @ 5572:d7d954b6d518

evolve: remove swapping nodes logic while resolving divergence

Before this patch, while solving content-divergence if one of the
divergent cset need to relocate to resolution parent we used to set that
cset to "other" side; so it was like we are always going to relocate "other"
side which made us to swap the two if "divergent" cset need to relocate.

Above mentioned solution for relocating cset was not good and led us to incorrect
output in some cases.

So this patch, simplify the logic and remove the swapping thing and clearly depend
on resolution parent to check if any of the divergent cset needs to relocate.
This also means that now in some cases if both the divergent csets needs
to relocate, both will be relocated. Even before this patch, there are some cases
where both the divergent csets relocated but not in every case where it should
have.

Coming to the changes in test files:
1) changes in order of merging the two divergent csets is due to fact that
   now "divergent" and "other" are not swapped and hence "divergent" will be at
   local side and "other" will be at "other", which also results in change in
   the hash id for some cases.

2) extra changesets: which is the result of the fact that now we don't miss
   any case where both the divergent csets should be based on resolution parent
   before performing the merge -> which caught some cases and performed relocation,
   hence extra changesets. Although you can find that there is no changes in file
   content because of these relocation, but I remember loosing some data because
   of not relocating the "divergent", so why leave any risk out there by not
   relocating "other" to the resolution parent.

test of the fold command
------------------------

  $ cat >> $HGRCPATH <<EOF
  > [defaults]
  > amend=-d "0 0"
  > fold=-d "0 0"
  > split=-d "0 0"
  > amend=-d "0 0"
  > [web]
  > push_ssl = false
  > allow_push = *
  > [phases]
  > publish = False
  > [diff]
  > git = 1
  > unified = 0
  > [ui]
  > interactive = true
  > [extensions]
  > EOF
  $ echo "topic=$(echo $(dirname $TESTDIR))/hgext3rd/topic/" >> $HGRCPATH
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1" $2 $3
  > }
  $ logtopic() {
  >    hg log -G -T "{rev}:{node}\ntopics: {topics}" 
  > }

Check that fold keep the topic if all revisions have the topic
--------------------------------------------------------------

  $ hg init testfold
  $ cd testfold
  $ mkcommit ROOT
  $ hg topic myfeature
  marked working directory as topic: myfeature
  $ mkcommit feature1
  active topic 'myfeature' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit feature2
  $ logtopic
  @  2:d76a6166b18c835be9a487c5e21c7d260f0a1676
  |  topics: myfeature
  o  1:39e7a938055e87615edf675c24a10997ff05bb06
  |  topics: myfeature
  o  0:3e7df3b3b17c6deb4a1c70e790782fdf17af96a7
     topics:
  $ hg fold --exact -r "(tip~1)::" -m "folded"
  2 changesets folded
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg stack
  ### topic: myfeature
  ### target: default (branch)
  s1@ folded (current)
  s0^ add ROOT (base)
  $ logtopic
  @  3:4fd43e5bdc443dc8489edffac19bd8f93ccf1a5c
  |  topics: myfeature
  o  0:3e7df3b3b17c6deb4a1c70e790782fdf17af96a7
     topics:
  $ hg summary
  parent: 3:4fd43e5bdc44 tip
   folded
  branch: default
  commit: (clean)
  update: (current)
  phases: 2 draft
  topic:  myfeature

Check that fold dismis the topic if not all revisions have the topic
--------------------------------------------------------------------

(I'm not sure this behavior make senses, but now it is tested)

  $ hg topic --clear
  $ mkcommit feature3
  created new head
  (consider using topic for lightweight branches. See 'hg help topic')
  $ hg topic myotherfeature
  marked working directory as topic: myotherfeature
  $ mkcommit feature4
  active topic 'myotherfeature' grew its first changeset
  (see 'hg help topics' for more information)
  $ logtopic
  @  5:5ded4d6d578c37f339b0716de2e46e12ece7cbde
  |  topics: myotherfeature
  o  4:bdf6950b9b5b7c6b377c8132667c73ec86d5734f
  |  topics:
  o  3:4fd43e5bdc443dc8489edffac19bd8f93ccf1a5c
  |  topics: myfeature
  o  0:3e7df3b3b17c6deb4a1c70e790782fdf17af96a7
     topics:
  $ hg fold --exact -r "(tip~1)::" -m "folded 2"
  active topic 'myotherfeature' is now empty
  2 changesets folded
  clearing empty topic "myotherfeature"
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ logtopic
  @  6:03da8f7238e9a4d708d6b8af402c91c68f271477
  |  topics:
  o  3:4fd43e5bdc443dc8489edffac19bd8f93ccf1a5c
  |  topics: myfeature
  o  0:3e7df3b3b17c6deb4a1c70e790782fdf17af96a7
     topics:
  $ hg summary
  parent: 6:03da8f7238e9 tip
   folded 2
  branch: default
  commit: (clean)
  update: (current)
  phases: 3 draft