view tests/test-evolve-list.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 (Dead because one of the revision is obsolete which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.

Set up some configs
  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

Test listing orphan changesets
  $ hg init r2
  $ cd r2
  $ echo a > a && hg ci -Am a
  adding a
  $ echo b > b && hg ci -Am b
  adding b
  $ echo c > c && hg ci -Am c
  adding c
  $ hg up 0
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo a >> a && hg ci --amend -m a
  2 new orphan changesets
  $ hg evolve --list
  d2ae7f538514: b
    orphan: cb9a9f314b8b (obsolete parent)
  
  177f92b77385: c
    orphan: d2ae7f538514 (orphan parent)
  
  $ cd ..

Test listing phase-divergent changesets
  $ hg init r3
  $ cd r3
  $ echo a > a && hg ci -Am a
  adding a
  $ echo b > b && hg ci --amend -m ab
  $ hg phase --public --rev 0 --hidden
  1 new phase-divergent changesets
  $ hg evolve --list
  88cc282e27fc: ab
    phase-divergent: cb9a9f314b8b (immutable precursor)
  
  $ cd ..

Test listing content-divergent changesets
  $ hg init r1
  $ cd r1
  $ echo a > a && hg ci -Am a
  adding a
  $ hg up 0
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo b > b && hg ci -Am b
  adding b
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo c > c && hg ci -Am c
  adding c
  created new head
  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo d > d && hg ci -Am d
  adding d
  created new head
  $ hg rebase -s 1 -d 2
  rebasing 1:d2ae7f538514 "b"
  $ hg rebase -s 1 -d 3 --hidden --config experimental.allowdivergence=True
  rebasing 1:d2ae7f538514 "b"
  2 new content-divergent changesets
  $ hg evolve --list
  c882616e9d84: b
    content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
  
  a922b3733e98: b
    content-divergent: c882616e9d84 (draft) (precursor d2ae7f538514)
  
  $ hg evolve --list --rev c882616e9d84
  c882616e9d84: b
    content-divergent: a922b3733e98 (draft) (precursor d2ae7f538514)
  
  $ hg phase -p a922b3733e98
  $ hg evolve --list
  c882616e9d84: b
    content-divergent: a922b3733e98 (public) (precursor d2ae7f538514)
  
  $ cd ..