annotate tests/test-evolve-wdir.t @ 6100:46858e6f8b99

tests: add a remaining test on evolving obsolete wdir parent

The obsolete parent was split in multiple successors. As one can see
after updating to the common obsolete parent it prints a message
suggesting to run `hg evolve` to update to its tipmost successor.

But, given suggestion doesn't work as expected and instead return error
saying parent is obsolete with multiple successor.

This will be fixed in upcoming patches.

===============================================
Testing evolution of obsolete working directory
===============================================

Pulling changes from other repos can make your working directory parent (wdir)
obsolete, most probably because now it has a new successor. But there are
other cases as well where it might be pruned with no successors or split
in multiple changesets etc.

This test file deals with all the possible cases for the evolution from an
obsolete working directory parent.

.. Case A: obsolete wdp with single successor
..     Resolution : simply update to the successor
..
.. Case B: obsolete wdp with no successor (simply pruned)
..     Resolution : update to a not-dead ancestor
..
.. Case C: obsolete wdp with multiple successor (divergence rewriting)
..     Resolution : #TODO: not handled yet
..
.. Case D: obsolete wdp with multiple successor (split rewriting)
..     Resolution : #TODO: not handled yet

A. Obsolete wdp with single successor
-------------------------------------

Setup
  $ . $TESTDIR/testlib/common.sh
  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > evolve=
  > rebase=
  > [alias]
  > glog = log --graph --template "{rev}:{node|short} ({phase}): {desc|firstline} {if(troubles, '[{troubles}]')}\n"
  > EOF

#testcases inmemory ondisk
#if inmemory
  $ cat >> $HGRCPATH <<EOF
  > [experimental]
  > evolution.in-memory = yes
  > EOF
#endif

  $ hg init repo
  $ cd repo
  $ mkcommit c_A
  $ mkcommit c_B
  $ hg amend -m "u_B"
  $ hg up -r 'desc(c_B)' --hidden
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset 707ee88b2870
  (hidden revision '707ee88b2870' was rewritten as: 9bf151312dec)
  working directory parent is obsolete! (707ee88b2870)
  (use 'hg evolve' to update to its successor: 9bf151312dec)

  $ hg evolve
  update:[2] u_B
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  working directory is now at 9bf151312dec
  $ hg glog
  @  2:9bf151312dec (draft): u_B
  |
  o  0:9f0188af4c58 (draft): c_A
  

B. Obsolete wdp with no successor
---------------------------------

  $ hg prune .
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory is now at 9f0188af4c58
  1 changesets pruned
  $ hg up -r 'desc(c_B)' --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset 707ee88b2870
  (hidden revision '707ee88b2870' is pruned)
  working directory parent is obsolete! (707ee88b2870)
  (use 'hg evolve' to update to its parent successor)

  $ hg evolve
  update:[0] c_A
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  working directory is now at 9f0188af4c58
  $ hg glog
  @  0:9f0188af4c58 (draft): c_A
  

C. Obsolete wdp with multiple successor (divergence rewriting)
---------------------------------------------------------------

  $ hg metaedit -r 'desc(u_B)' -d '0 1' --hidden
  $ hg metaedit -r 'desc(c_B)' -d '0 1' --hidden
  2 new content-divergent changesets
  $ hg up -r 'min(desc(c_B))' --hidden
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset 707ee88b2870
  (hidden revision '707ee88b2870' has diverged)
  working directory parent is obsolete! (707ee88b2870)
  (707ee88b2870 has diverged, use 'hg evolve --list --content-divergent' to resolve the issue)

  $ hg evolve
  parent is obsolete with multiple successors:
  [3] u_B
  [4] c_B
  [2]

  $ hg glog
  *  4:39e54eb7aa3c (draft): c_B [content-divergent]
  |
  | *  3:90624b574289 (draft): u_B [content-divergent]
  |/
  | @  1:707ee88b2870 (draft): c_B
  |/
  o  0:9f0188af4c58 (draft): c_A
  

D. Obsolete wdp with multiple successor (split rewriting)
----------------------------------------------------------

when split csets are on a single topological branch
  $ hg up -r 'desc(c_A)'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo X > X; echo Y > Y; echo Z > Z;
  $ hg ci -Am 'c_XYZ'
  adding X
  adding Y
  adding Z
  created new head
  $ hg split -r "desc(c_XYZ)" -d "0 0" --config ui.interactive=True << EOF
  > f
  > d
  > y
  > f
  > d
  > c
  > EOF
  0 files updated, 0 files merged, 3 files removed, 0 files unresolved
  adding X
  adding Y
  adding Z
  diff --git a/X b/X
  new file mode 100644
  examine changes to 'X'?
  (enter ? for help) [Ynesfdaq?] f
  
  diff --git a/Y b/Y
  new file mode 100644
  examine changes to 'Y'?
  (enter ? for help) [Ynesfdaq?] d
  
  created new head
  continue splitting? [Ycdq?] y
  diff --git a/Y b/Y
  new file mode 100644
  examine changes to 'Y'?
  (enter ? for help) [Ynesfdaq?] f
  
  diff --git a/Z b/Z
  new file mode 100644
  examine changes to 'Z'?
  (enter ? for help) [Ynesfdaq?] d
  
  continue splitting? [Ycdq?] c

  $ hg up -r 'min(desc(c_XYZ))' --hidden
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  updated to hidden changeset c8b6cf6ce628
  (hidden revision 'c8b6cf6ce628' was split as: 1eb7dbbcecbd, b99a391251cc and 1 more)
  working directory parent is obsolete! (c8b6cf6ce628)
  (use 'hg evolve' to update to its tipmost successor: 1eb7dbbcecbd, b99a391251cc and 1 more)

  $ hg evolve
  parent is obsolete with multiple successors:
  [6] c_XYZ
  [7] c_XYZ
  [8] c_XYZ
  [2]