view tests/test-evolve-split.t @ 6935:954d7ea5cd67 stable tip

stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one
successor for it to use in stack. In such a case, let's pick the "latest"
successor from the first set.

We're assuming that obsutil.successorssets() returns data in the same order (it
should, since it makes sure to sort data internally). Keeping that in mind,
while the successor picked for s0 by this code is not based on any sort of
sophisticated logic, it should nonetheless be the same every time.

This patch is probably not going to completely break anything that was
previously working fine, because the previous behavior was to just abort with
an exception.

Check that evolve can handle split commits
------------------------------------------

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > logtemplate = {rev}:{node|short}@{branch}({phase}) {desc|firstline}\n
  > [extensions]
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1"
  > }

  $ hg init split
  $ cd split
  $ mkcommit aa

Create a split commit
  $ printf "oo" > oo;
  $ printf "pp" > pp;
  $ hg add oo pp
  $ hg commit -m "oo+pp"
  $ mkcommit uu
  $ hg up 0
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ printf "oo" > oo;
  $ hg add oo
  $ hg commit -m "_oo"
  created new head
  $ printf "pp" > pp;
  $ hg add pp
  $ hg commit -m "_pp"
  $ hg prune --successor "desc(_oo) + desc(_pp)" -r "desc('oo+pp')" --split
  1 changesets pruned
  1 new orphan changesets
  $ hg log -G
  @  4:d0dcf24cddd3@default(draft) _pp
  |
  o  3:a7fdfda64c08@default(draft) _oo
  |
  | *  2:f52200b086ca@default(draft) add uu
  | |
  | x  1:d55647aaa0c6@default(draft) oo+pp
  |/
  o  0:58663bb03074@default(draft) add aa
  
  $ hg evolve --rev "0::"
  move:[2] add uu
  atop:[4] _pp

  $ cd ..
  $ hg init split-merged
  $ cd split-merged
  $ mkcommit aa

Split the changeset such that the successors don't have a single root and there's an unrelated changeset in between
  $ printf "oo" > oo;
  $ printf "pp" > pp;
  $ printf "qq" > qq;
  $ hg add oo pp qq
  $ hg commit -m "oo+pp+qq"
  $ mkcommit uu
  $ hg up 0
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ printf "oo" > oo;
  $ hg add oo
  $ hg commit -m "_oo"
  created new head
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ printf "pp" > pp;
  $ hg add pp
  $ hg commit -m "_pp"
  created new head
  $ hg merge 3
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m 'merge oo and pp'
  $ printf "qq" > qq;
  $ hg add qq
  $ hg commit -m "_qq"
  $ hg prune --successor "desc(_oo) + desc(_pp) + desc(_qq)" -r "desc('oo+pp+qq')" --split
  1 changesets pruned
  1 new orphan changesets
  $ hg log -G
  @  6:ea5b1e180c04@default(draft) _qq
  |
  o    5:bf7c32161b4b@default(draft) merge oo and pp
  |\
  | o  4:ece0aaa22eb7@default(draft) _pp
  | |
  o |  3:a7fdfda64c08@default(draft) _oo
  |/
  | *  2:cc56c47d84b3@default(draft) add uu
  | |
  | x  1:575a7380a87d@default(draft) oo+pp+qq
  |/
  o  0:58663bb03074@default(draft) add aa
  
  $ hg evolve --rev "0::"
  move:[2] add uu
  atop:[6] _qq