** Test for handling of phase divergent changesets by `hg evolve` **

====================================================================

  $ cat >> $HGRCPATH <<EOF

  > [alias]

  > glog = log -GT "{rev}:{node|short} {desc}\n ({bookmarks}) {phase}"

  > EOF

Setting up a public repo

------------------------

  $ 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/

Setting up a private non-publishing repo

----------------------------------------

  $ 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 ..

Setting up couple of more instances of private repo

---------------------------------------------------

  $ cp -a private alice

  $ cp -a private bob

Creating a phase-divergence changeset

-------------------------------------

Alice creating a draft changeset and pushing to main private repo

  $ 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 glog

  @  1:4d1169d82e47 modify a

  |   () draft

  o  0:d3873e73d99e init

      () public

Bob pulling from private repo and pushing to the main public repo making the

changeset public

  $ 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 glog

  o  1:4d1169d82e47 modify a

  |   () draft

  o  0:d3873e73d99e init

      () public

  $ 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 glog

  o  1:4d1169d82e47 modify a

  |   () public

  o  0:d3873e73d99e init

      () public

*But* Alice decided to amend the changeset she had and then pulling from public

repo creating phase-divergent changeset locally

  $ cd ../alice

  $ hg amend -m 'tweak a'

XXX: pull should tell us how to see what is the new phase-divergent changeset

  $ hg pull ../public

  pulling from ../public

  searching for changes

  no changes found

  1 new phase-divergent changesets

  $ hg glog

  @  2:98bb3a6cfe1a tweak a

  |   () draft

  | o  1:4d1169d82e47 modify a

  |/    () public

  o  0:d3873e73d99e init

      () public

Using evolve --list to list phase-divergent changesets

------------------------------------------------------

  $ hg evolve --list

  98bb3a6cfe1a: tweak a

    phase-divergent: 4d1169d82e47 (immutable precursor)

XXX-Pulkit: Trying to see instability on public changeset

XXX-Pulkit: this is not helpful

XXX-Marmoute: public changeset "instable themself"

XXX-Marmoute: I'm not sure if we store this information and it is useful to show it.

XXX-Marmoute: We should maybe point the user toward `hg obslog` instead`

  $ hg evolve -r 4d1169d8 --list

  4d1169d82e47: modify a

Understanding phasedivergence using obslog

------------------------------------------

XXX: There must be mention of phase-divergence here

  $ hg obslog -r . --all

  @  98bb3a6cfe1a (2) tweak a

  |

  o  4d1169d82e47 (1) modify a

       rewritten(description) as 98bb3a6cfe1a using amend by test (Thu Jan 01 00:00:00 1970 +0000)

Solving the phase divergence using evolve command

--------------------------------------------------

(We do not solve evolution other than orphan by default because it turned out

it was too confusing for users. We used to behave this way, but having multiple

possible outcome to evolve end up scaring people)

  $ hg evolve

  nothing to evolve on current working copy parent

  (do you want to use --phase-divergent)

  [2]

testing the --confirm option

  $ hg evolve --phase-divergent --confirm <<EOF

  > n

  > EOF

  recreate:[2] tweak a

  atop:[1] modify a

  perform evolve? [Ny] n

  abort: evolve aborted by user

  [255]

testing the --dry-run option

  $ hg evolve --phase-divergent --dry-run

  recreate:[2] tweak a

  atop:[1] modify a

  hg rebase --rev 98bb3a6cfe1a --dest d3873e73d99e;

  hg update 4d1169d82e47;

  hg revert --all --rev 98bb3a6cfe1a;

  hg commit --msg "phase-divergent update to 98bb3a6cfe1a"

XXX: evolve should have mentioned that draft commit is just obsoleted in favour

of public one. From the message it looks like a new commit is created.

  $ hg evolve --phase-divergent

  recreate:[2] tweak a

  atop:[1] modify a

  computing new diff

  committed as 4d1169d82e47

  working directory is now at 4d1169d82e47

  $ hg glog

  @  1:4d1169d82e47 modify a

  |   () public

  o  0:d3873e73d99e init

      () public