Testing `hg stack` on complex cases when we have multiple successors because of

divergence, split etc.

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

Setup

  $ cat << EOF >> $HGRCPATH

  > [experimental]

  > evolution = all

  > [ui]

  > interactive = True

  > [extensions]

  > show =

  > EOF

  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ hg init test

  $ cd test

  $ echo foo > foo

  $ hg add foo

  $ hg ci -m "Added foo"

  $ hg phase -r . --public

  $ hg topic foo

  marked working directory as topic: foo

  $ echo a > a

  $ echo b > b

  $ hg ci -Aqm "Added a and b"

  $ echo c > c

  $ echo d > d

  $ hg ci -Aqm "Added c and d"

  $ echo e > e

  $ echo f > f

  $ hg ci -Aqm "Added e and f"

  $ hg show work

  @  f1d3 (foo) Added e and f

  o  8e82 (foo) Added c and d

  o  002b (foo) Added a and b

  o  f360 Added foo

Testing in case of split within the topic

  $ hg stack

  ### topic: foo

  ### target: default (branch)

  t3@ Added e and f (current)

  t2: Added c and d

  t1: Added a and b

  t0^ Added foo (base)

  $ hg prev

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

  [2] Added c and d

  $ echo 0 > num

  $ cat > editor.sh << '__EOF__'

  > NUM=$(cat num)

  > NUM=`expr "$NUM" + 1`

  > echo "$NUM" > num

  > echo "split$NUM" > "$1"

  > __EOF__

  $ export HGEDITOR="\"sh\" \"editor.sh\""

  $ hg split << EOF

  > y

  > y

  > n

  > y

  > EOF

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

  adding c

  adding d

  diff --git a/c b/c

  new file mode 100644

  examine changes to 'c'? [Ynesfdaq?] y

  @@ -0,0 +1,1 @@

  +c

  record change 1/2 to 'c'? [Ynesfdaq?] y

  diff --git a/d b/d

  new file mode 100644

  examine changes to 'd'? [Ynesfdaq?] n

  Done splitting? [yN] y

  $ hg stack

  ### topic: foo

  ### target: default (branch)

  t4$ Added e and f (unstable)

  t3@ split2 (current)

  t2: split1

  t1: Added a and b

  t0^ Added foo (base)

  $ hg show work

  @  5cce (foo) split2

  o  f26c (foo) split1

  | o  f1d3 (foo) Added e and f

  | x  8e82 (foo) Added c and d

  |/

  o  002b (foo) Added a and b

  o  f360 Added foo

  $ hg prev

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [4] split1

  $ echo foo > c

  $ hg diff

  diff -r f26c1b9addde c

  --- a/c	Thu Jan 01 00:00:00 1970 +0000

  +++ b/c	Thu Jan 01 00:00:00 1970 +0000

  @@ -1,1 +1,1 @@

  -c

  +foo

  $ hg amend

  1 new orphan changesets

  $ hg show work

  @  7d94 (foo) split1

  | o  5cce (foo) split2

  | x  f26c (foo) split1

  |/

  | o  f1d3 (foo) Added e and f

  | x  8e82 (foo) Added c and d

  |/

  o  002b (foo) Added a and b

  o  f360 Added foo

  $ hg stack

  ### topic: foo (2 heads)

  ### target: default (branch), 2 behind

  ** unknown exception encountered, please report by visiting

  ** https://mercurial-scm.org/wiki/BugTracker

  ** Python 2.7.12 (default, Jul 18 2016, 15:04:44) [GCC 4.8.4]

  ** Mercurial Distributed SCM (version 4.4.2+379-6812f5c492c7)

  ** Extensions loaded: rebase, topic, show, evolve

  Traceback (most recent call last):

    File "/tmp/hgtests.d2IKdr/install/bin/hg", line 41, in <module>

      dispatch.run()

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 88, in run

      status = (dispatch(req) or 0) & 255

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 177, in dispatch

      ret = _runcatch(req)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 318, in _runcatch

      return _callcatch(ui, _runcatchfunc)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 326, in _callcatch

      return scmutil.callcatch(ui, func)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/scmutil.py", line 154, in callcatch

      return func()

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 308, in _runcatchfunc

      return _dispatch(req)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 912, in _dispatch

      cmdpats, cmdoptions)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 667, in runcommand

      ret = _runcommand(ui, options, cmd, d)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 920, in _runcommand

      return cmdfunc()

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/dispatch.py", line 909, in <lambda>

      d = lambda: util.checksignature(func)(ui, *args, **strcmdopt)

    File "/tmp/hgtests.d2IKdr/install/lib/python/mercurial/util.py", line 1188, in check

      return func(*args, **kwargs)

    File "/home/pulkit/repo/mutable-history/hgext3rd/topic/__init__.py", line 663, in cmdstack

      return stack.showstack(ui, repo, branch=branch, topic=topic, opts=opts)

    File "/home/pulkit/repo/mutable-history/hgext3rd/topic/stack.py", line 288, in showstack

      p1 = repo[_singlesuccessor(repo, p1)]

    File "/home/pulkit/repo/mutable-history/hgext3rd/topic/evolvebits.py", line 92, in _singlesuccessor

      raise MultipleSuccessorsError(newer)

  hgext3rd.topic.evolvebits.MultipleSuccessorsError

  [1]