view tests/test-discovery-obshashrange-cache.t @ 4728:ef8907df73fc stable

touch: fix the inconsistent behavior of divergence catching logic (issue6107)

When touching a node, the way we check if it can lead to divergence
is we look at the successors sets of the rev being touched. And if
there is successor revs exists (excluding the case when that successor
set is (A,) for rev A) that means there will be divergence and we warn
the user.
This works fine but there is still a case (which is not covered by looking
at successor sets) which can lead to divergence.

That case is: when there is already a revision exists which is divergent
to the revision being touched. And performing the touch would revive
that "dead" divergence. (Dead because one of the revision is obsolete which
is the one we are touching)

And to see if there is any rev which is divergent to a particular rev
we already have a function which we can use here
i.e. `evolvecmd.divergentsets(repo, ctx_being_touched)`

Changes in test file demonstrate the fixed behaviour.

==============================
Test cache warming strategy 
test for range based discovery
==============================

  $ . $TESTDIR/testlib/pythonpath.sh

  $ cat << EOF >> $HGRCPATH
  > [extensions]
  > hgext3rd.evolve =
  > blackbox =
  > [defaults]
  > blackbox = -l 100
  > [experimental]
  > obshashrange=1
  > verbose-obsolescence-exchange=1
  > [ui]
  > logtemplate = "{rev} {node|short} {desc} {tags}\n"
  > ssh=python "$RUNTESTDIR/dummyssh"
  > [alias]
  > debugobsolete=debugobsolete -d '0 0'
  > [ui]
  > ssh=$PYTHON "$RUNTESTDIR/dummyssh"
  > EOF

  $ hg init main

  $ hg -R main debugbuilddag '.+7'

  $ for node in `hg -R main log -T '{node}\n'`; do
  >     printf $node | grep -o . | sort |tr -d "\n" > ancfile
  >     anc=`cat ancfile`
  >     rm ancfile
  >     echo "marking $anc as predecessors of $node"
  >     hg -R main debugobsolete $anc $node
  > done
  marking 000011223334456677789aaaaabbbbcccddddeef as predecessors of 4de32a90b66cd083ebf3c00b41277aa7abca51dd
  marking 012234455555666699aaaaabbbccccccefffffff as predecessors of f69452c5b1af6cbaaa56ef50cf94fff5bcc6ca23
  marking 00001122233445555777778889999abbcccddeef as predecessors of c8d03c1b5e94af74b772900c58259d2e08917735
  marking 0011222445667777889999aabbbbcddddeeeeeee as predecessors of bebd167eb94d257ace0e814aeb98e6972ed2970d
  marking 000011222223344555566778899aaaabccddefff as predecessors of 2dc09a01254db841290af0538aa52f6f52c776e3
  marking 01111222223333444455555566999abbbbcceeef as predecessors of 01241442b3c2bf3211e593b549c655ea65b295e3
  marking 01122444445555566677888aabbcccddddefffff as predecessors of 66f7d451a68b85ed82ff5fcc254daf50c74144bd
  marking 000111111234444467777889999aaaabcdeeeeff as predecessors of 1ea73414a91b0920940797d8fc6a11e447f8ea1e

  $ hg debugobsolete -R main
  000011223334456677789aaaaabbbbcccddddeef 4de32a90b66cd083ebf3c00b41277aa7abca51dd 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  012234455555666699aaaaabbbccccccefffffff f69452c5b1af6cbaaa56ef50cf94fff5bcc6ca23 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  00001122233445555777778889999abbcccddeef c8d03c1b5e94af74b772900c58259d2e08917735 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  0011222445667777889999aabbbbcddddeeeeeee bebd167eb94d257ace0e814aeb98e6972ed2970d 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  000011222223344555566778899aaaabccddefff 2dc09a01254db841290af0538aa52f6f52c776e3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  01111222223333444455555566999abbbbcceeef 01241442b3c2bf3211e593b549c655ea65b295e3 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  01122444445555566677888aabbcccddddefffff 66f7d451a68b85ed82ff5fcc254daf50c74144bd 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}
  000111111234444467777889999aaaabcdeeeeff 1ea73414a91b0920940797d8fc6a11e447f8ea1e 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'}

Cache mode is "auto" so local commit did not warm the cache yet

  $ f -s main/.hg/cache/evoext*
  main/.hg/cache/evoext-obscache-00: size=72

Initial push
------------

  $ hg init server
  $ hg -R main push ssh://user@dummy/server
  pushing to ssh://user@dummy/server
  searching for changes
  OBSEXC: computing relevant nodes
  OBSEXC: looking for common markers in 8 nodes
  OBSEXC: computing markers relevant to 8 nodes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 8 changesets with 0 changes to 0 files
  remote: 8 new obsolescence markers

sever cash is warm

  $ f -s server/.hg/cache/evoext*
  server/.hg/cache/evoext-depthcache-00: size=88
  server/.hg/cache/evoext-firstmerge-00: size=88
  server/.hg/cache/evoext-obscache-00: size=72
  server/.hg/cache/evoext-stablesortcache-00: size=92
  server/.hg/cache/evoext_obshashrange_v2.sqlite: size=?* (glob)
  server/.hg/cache/evoext_stablerange_v2.sqlite: size=?* (glob)

client cash is warm

  $ f -s main/.hg/cache/evoext*
  main/.hg/cache/evoext-depthcache-00: size=88
  main/.hg/cache/evoext-firstmerge-00: size=88
  main/.hg/cache/evoext-obscache-00: size=72
  main/.hg/cache/evoext-stablesortcache-00: size=92
  main/.hg/cache/evoext_obshashrange_v2.sqlite: size=?* (glob)
  main/.hg/cache/evoext_stablerange_v2.sqlite: size=?* (glob)

initial pull
------------

  $ rm -rf main
  $ hg init main
  $ hg -R main pull ssh://user@dummy/server
  pulling from ssh://user@dummy/server
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 0 changes to 0 files
  8 new obsolescence markers
  new changesets 1ea73414a91b:4de32a90b66c
  (run 'hg update' to get a working copy)

client cache is empty because the discovery was empty

  $ f -s main/.hg/cache/evoext*
  main/.hg/cache/evoext-obscache-00: size=72

no op pull
------------

clear cache

  $ rm -rf main/.hg/cache/evoext

pull nothing

  $ hg -R main pull ssh://user@dummy/server
  pulling from ssh://user@dummy/server
  searching for changes
  no changes found
  OBSEXC: looking for common markers in 8 nodes

client cash is warm

  $ f -s main/.hg/cache/evoext*
  main/.hg/cache/evoext-depthcache-00: size=88
  main/.hg/cache/evoext-firstmerge-00: size=88
  main/.hg/cache/evoext-obscache-00: size=72
  main/.hg/cache/evoext-stablesortcache-00: size=92
  main/.hg/cache/evoext_obshashrange_v2.sqlite: size=?* (glob)
  main/.hg/cache/evoext_stablerange_v2.sqlite: size=?* (glob)

no op push
------------

clear cache

  $ rm -rf main/.hg/cache/evoext

push nothing

  $ hg -R main push ssh://user@dummy/server
  pushing to ssh://user@dummy/server
  searching for changes
  OBSEXC: computing relevant nodes
  OBSEXC: looking for common markers in 8 nodes
  OBSEXC: markers already in sync
  no changes found
  [1]

client cash is warm

  $ f -s main/.hg/cache/evoext*
  main/.hg/cache/evoext-depthcache-00: size=88
  main/.hg/cache/evoext-firstmerge-00: size=88
  main/.hg/cache/evoext-obscache-00: size=72
  main/.hg/cache/evoext-stablesortcache-00: size=92
  main/.hg/cache/evoext_obshashrange_v2.sqlite: size=?* (glob)
  main/.hg/cache/evoext_stablerange_v2.sqlite: size=?* (glob)