view tests/test-issue-5720.t @ 4843:d6e2820dac1f stable

tests: add some more actions to test-issue-6028, describe what's being done

This patch does two things: it explains what's happening in the test file so
it's easier to understand, and also it adds checks that make sure something
like swapping merge parents is not accidentally breaking anything.

The primary reason to touch this test file was that it was broken by a change
in core's merge.graft() that erroneously swapped merge parents. Since only
evolve uses merge.graft() for merge commits and there aren't any tests in core
for it, let's test it here. Plus, this test case is pretty simple and these
additional checks don't make it too complicated.

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')
  unresolved merge conflicts
  (see 'hg help evolve.interrupted')
  [1]

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 87495ea7c9ec

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