view tests/test-evolve-bumped.t @ 3573:d53277cdc1e7

evolve: handle stabilization of merge changeset with both parents obsoleted

This patch adds logic to stabilize an orphan merge changeset having both parents
obsoleted.

The logic tries to first stabilize the merge changeset on successor of second
parent and then stabilize the new changeset formed on the successor of first
parent. We are stabilizing on second parent first and then to second parent to
preserve the first parent's successor as first parent of the merge changeset.

Conflicts can occcur and we can loose processing information, therefore we store
a variable in statefile `orphanmerge` which represents whether we are processing
a merge changeset with both parents obsoleted.

Thanks to Pierre-Yves David for suggesting this way and helping to understand
the correctness of this.

More rigourous test cases for this will be added in next patch.

  $ hg init public
  $ cd public
  $ echo a > a
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1"
  > }
  $ hg commit -A -m init
  adding a
  $ cd ..

  $ evolvepath=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/
  $ hg clone -U public private
  $ cd private
  $ cat >> .hg/hgrc <<EOF
  > [extensions]
  > evolve = $evolvepath
  > [ui]
  > logtemplate = {rev}:{node|short}@{branch}({phase}) {desc|firstline}\n
  > [phases]
  > publish = false
  > EOF
  $ cd ..

  $ cp -a private alice
  $ cp -a private bob

  $ cd alice
  $ hg update
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo a >> a
  $ hg commit -u alice -m 'modify a'
  $ hg push ../private
  pushing to ../private
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  $ hg log -r 'draft()'
  1:4d1169d82e47@default(draft) modify a

  $ cd ../bob
  $ hg pull ../private
  pulling from ../private
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets 4d1169d82e47
  (run 'hg update' to get a working copy)
  $ hg log -r 'draft()'
  1:4d1169d82e47@default(draft) modify a
  $ hg push ../public
  pushing to ../public
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  $ hg log -r 'draft()'

  $ cd ../alice
  $ hg amend -m 'tweak a'
  $ hg pull ../public
  pulling from ../public
  searching for changes
  no changes found
  1 new phase-divergent changesets

  $ hg evolve -a -A --phase-divergent
  recreate:[2] tweak a
  atop:[1] modify a
  computing new diff
  committed as 4d1169d82e47
  working directory is now at 4d1169d82e47

Bumped Merge changeset:
-----------------------

We currently cannot automatically solve bumped changeset that is the
product of a merge, we add a test for it.

  $ mkcommit _a
  $ hg up .^
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit _b
  created new head
  $ mkcommit _c
  $ hg log -G
  @  5:eeaf70969381@default(draft) add _c
  |
  o  4:6612fc0ddeb6@default(draft) add _b
  |
  | o  3:154ad198ff4a@default(draft) add _a
  |/
  o  1:4d1169d82e47@default(public) modify a
  |
  o  0:d3873e73d99e@default(public) init
  
  $ hg merge 3
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg commit -m "merge"
  $ hg commit --amend -m "New message"
  $ hg phase --public 551127da2a8a --hidden
  1 new phase-divergent changesets
  $ hg log -G
  @    7:b28e84916d8c@default(draft) New message
  |\
  +---o  6:551127da2a8a@default(public) merge
  | |/
  | o  5:eeaf70969381@default(public) add _c
  | |
  | o  4:6612fc0ddeb6@default(public) add _b
  | |
  o |  3:154ad198ff4a@default(public) add _a
  |/
  o  1:4d1169d82e47@default(public) modify a
  |
  o  0:d3873e73d99e@default(public) init
  
  $ hg evolve --all --phase-divergent
  skipping b28e84916d8c : we do not handle merge yet