view tests/test-discovery-hidden-common.t @ 6935:954d7ea5cd67 stable

stack: when stack base is obsolete, pick any successor, even if at random

There are situations when s0 is obsolete and we also cannot pick just one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

test for discovery with some remote changesets hidden locally
=============================================================

  $ . $TESTDIR/testlib/common.sh

  $ cat << EOF >> $HGRCPATH
  > [phases]
  > publish = false
  > [extensions]
  > evolve =
  > [experimental]
  > verbose-obsolescence-exchange = 1
  > [ui]
  > logtemplate = "{rev} {node|short} {desc} {tags}\n"
  > ssh = "$PYTHON" "$RUNTESTDIR/dummyssh"
  > EOF

  $ hg init server
  $ hg clone ssh://user@dummy/server client
  no changes found
  updating to branch default
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd server
  $ mkcommit root
  $ mkcommit A0

second pull:

  $ hg -R ../client pull
  pulling from ssh://user@dummy/server
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files
  new changesets 1e4be0697311:8aaa48160adc (2 drafts)
  (run 'hg update' to get a working copy)
  $ hg -R ../client log -G
  o  1 8aaa48160adc A0 tip
  |
  o  0 1e4be0697311 root
  

more update

  $ hg tag --local stay-visible
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit A1
  created new head
  $ hg debugobsolete `getid 'desc(A0)'` `getid 'desc(A1)'`
  1 new obsolescence markers
  obsoleted 1 changesets

second pull:

  $ hg -R ../client pull
  pulling from ssh://user@dummy/server
  searching for changes
  OBSEXC: looking for common markers in 2 nodes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  1 new obsolescence markers
  obsoleted 1 changesets
  new changesets f6082bc4ffef (1 drafts)
  (run 'hg heads' to see heads)
  $ hg -R ../client log -G
  o  2 f6082bc4ffef A1 tip
  |
  o  0 1e4be0697311 root
  

more update:

  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit A2
  created new head
  $ hg debugobsolete `getid 'desc(A1)'` `getid 'desc(A2)'`
  1 new obsolescence markers
  obsoleted 1 changesets

third pull:

  $ hg -R ../client pull
  pulling from ssh://user@dummy/server
  searching for changes
  OBSEXC: looking for common markers in 1 nodes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  1 new obsolescence markers
  obsoleted 1 changesets
  new changesets c1f8d089020f (1 drafts)
  (run 'hg heads' to see heads)
  $ hg -R ../client log -G
  o  3 c1f8d089020f A2 tip
  |
  o  0 1e4be0697311 root