view tests/test-issue-5720.t @ 3577:279d8b610ac5

evolve: add a `--stop` flag for `hg evolve` command

This patch adds a `--stop` flag for `hg evolve` command. The stop flag lets you
stop the evolution from where you are and let you move to other things if you
want. This fuctionality is great as user can decide to resolve conflicts later
on, stop the command execution, do something else and get back once they has
time or care about resolving them.

As implementation details, it clears the evolvestate, updates to the parent of
working directory clearing the uncommitted changes which also deletes the
mergestate.

A new test file test-evolve-stop.t is added with tests of the new flag added.

This test file test the #5720 issue

Check that `hg evolve --continue` doesn't change changeset phase from secret
to draft after a merge conflict.

https://bz.mercurial-scm.org/show_bug.cgi?id=5720

Global setup
============

  $ . $TESTDIR/testlib/common.sh
  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = true
  > [phases]
  > publish=False
  > [extensions]
  > evolve =
  > EOF

Test
====

  $ hg init $TESTTMP/issue-5720
  $ cd $TESTTMP/issue-5720

Create two drafts commits and one secret
  $ echo a > a
  $ hg commit -Am a
  adding a
  $ echo b > a
  $ hg commit -m b
  $ echo c > a
  $ hg commit --secret -m c
  $ hg log -G -T "{rev}: {phase}"
  @  2: secret
  |
  o  1: draft
  |
  o  0: draft
  
Amend the second draft with new content
  $ hg prev
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [1] b
  $ echo b2 > a
  $ hg amend
  1 new orphan changesets
  $ hg log -G -T "{rev}: {phase}"
  @  3: draft
  |
  | *  2: secret
  | |
  | x  1: draft
  |/
  o  0: draft
  
Evolve which triggers a conflict
  $ hg evolve
  move:[2] c
  atop:[3] b
  merging a
  warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
  evolve failed!
  fix conflict and run 'hg evolve --continue' or use 'hg update -C .' to abort
  abort: unresolved merge conflicts (see hg help resolve)
  [255]

Fix the conflict
  $ echo c2 > a
  $ hg resolve -m
  (no more unresolved files)
  continue: hg evolve --continue

Continue the evolution
  $ hg evolve --continue
  evolving 2:13833940840c "c"
  working directory is now at 3d2080c198e5

Tip should stay in secret phase
  $ hg log -G -T "{rev}: {phase}"
  @  4: secret
  |
  o  3: draft
  |
  o  0: draft
  
  $ hg log -r . -T '{phase}\n'
  secret