view tests/test-topic-multiple.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stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one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.

Testing topics on cases when we have multiple topics based on top
of other.
  $ . "$TESTDIR/testlib/topic_setup.sh"

Setup

  $ cat << EOF >> $HGRCPATH
  > [experimental]
  > evolution = all
  > [ui]
  > interactive = True
  > logtemplate = {rev} - \{{get(namespaces, "topics")}} {node|short} {desc} ({phase})\n
  > [extensions]
  > show =
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

Test to make sure `hg evolve` don't solve troubles out of current stack:
------------------------------------------------------------------------

  $ hg init repo1
  $ cd repo1
  $ for ch in a b c; do
  > echo $ch > $ch
  > hg ci -Am "added "$ch --topic foo
  > done;
  adding a
  active topic 'foo' grew its first changeset
  (see 'hg help topics' for more information)
  adding b
  adding c

  $ echo d > d
  $ hg ci -Am "added d" --topic bar
  adding d
  active topic 'bar' grew its first changeset
  (see 'hg help topics' for more information)

  $ hg up -r "desc('added c')"
  > echo cc >> c
  switching to topic foo
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg amend
  1 new orphan changesets

  $ hg log -G
  @  4 - {foo} 0cc68cbf943a added c (draft)
  |
  | *  3 - {bar} 94b12ff0f44a added d (draft)
  | |
  | x  2 - {foo} 9c315cf1e7de added c (draft)
  |/
  o  1 - {foo} ead01932caf0 added b (draft)
  |
  o  0 - {foo} 853c9ec0849e added a (draft)
  

  $ hg stack
  ### topic: foo
  ### target: default (branch)
  s3@ added c (current)
  s2: added b
  s1: added a

As expected, evolve should deny to evolve here as there is no troubled csets in current stack:
  $ hg evolve --all
  nothing to evolve on current working copy parent
  (1 other orphan in the repository, do you want --any or --rev)
  [2]