comparison tests/test-branch-change.t @ 40666:69268a13ffa5

branch: allow changing branch of merge commits with --rev

Tests show that changing branch of merge commits works fine with evolution and
without, so let's allow it. Other safeguards should prevent users from shooting
themselves in the foot.

40665:fb379b78b93e

  o  19:fd45b986b109 Added b
  |  stable ()
  o  18:204d2769eca2 Added a
     stable ()

Testing on merge

  $ hg merge -r 26
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

  $ hg branch -r . abcd
  abort: outstanding uncommitted merge
  [255]
  $ hg ci -m "Merge commit"
  $ hg branch -r '(.^)::' def
  abort: cannot change branch of a merge commit
  [255]

Changing branch on public changeset

  $ hg phase -r 27 -p
  $ hg branch -r 27 def
  abort: cannot change branch of public changesets
  (see 'hg help phases' for details)
  [255]

40666:69268a13ffa5

  o  19:fd45b986b109 Added b
  |  stable ()
  o  18:204d2769eca2 Added a
     stable ()

Changing branch of a merge commit

  $ hg branch -q ghi
  $ echo f > f
  $ hg ci -qAm 'Added f'
  $ hg up -q 27
  $ hg branch -q jkl
  $ echo g > g
  $ hg ci -qAm 'Added g'
  $ hg glog -r 'heads(:)'
  @  29:6bc1c6c2c9da Added g
  |  jkl ()
  ~
  o  28:2f1019bd29d2 Added f
  |  ghi (b1)
  ~

  $ hg branch -q default
  $ hg merge -r 28
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg branch -r . abcd
  abort: outstanding uncommitted merge
  [255]

  $ hg ci -m "Merge commit"
  $ hg glog -r 'parents(.)::'
  @    30:4d56e6b1eb6b Merge commit
  |\   default ()
  | o  29:6bc1c6c2c9da Added g
  | |  jkl ()
  | ~
  o  28:2f1019bd29d2 Added f
  |  ghi (b1)
  ~

  $ hg branch -r . ghi
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  changed branch on 1 changesets
  $ hg branch -r . jkl
  changed branch on 1 changesets
  $ hg branch -r . default
  changed branch on 1 changesets
  $ hg branch -r . stable
  abort: a branch of the same name already exists
  [255]

Changing branch on public changeset

  $ hg phase -r . -p
  $ hg branch -r . def
  abort: cannot change branch of public changesets
  (see 'hg help phases' for details)
  [255]

Merge commit with conflicts, with evolution and without

  $ mklozenge() {
  >   echo foo > a
  >   hg ci -qAm foo
  >   echo bar > a
  >   hg ci -qm bar
  >   hg up -q '.^'
  >   echo baz > a
  >   hg ci -qm baz
  >   hg merge -q -t :local
  >   echo neither > a
  >   hg ci -qm neither
  > }

  $ cd ..
  $ hg init merge-with-evolution
  $ cd merge-with-evolution
  $ mklozenge

  $ hg branch -r '(.^)::' abc
  changed branch on 2 changesets
  $ hg glog
  @    5:c07fa8b34d54 neither
  |\   abc ()
  | o  4:f2aa51777cc9 baz
  | |  abc ()
  o |  1:2e33c4f0856b bar
  |/   default ()
  o  0:91cfb6004abf foo
     default ()
  $ hg cat a
  neither

  $ cd ..
  $ hg init merge-without-evolution
  $ cd merge-without-evolution
  $ mklozenge
  $ cat > .hg/hgrc << EOF
  > [experimental]
  > evolution = no
  > evolution.allowunstable = no
  > EOF

  $ hg branch -r '(.^)::' abc
  changed branch on 2 changesets
  saved backup bundle to $TESTTMP/merge-without-evolution/.hg/strip-backup/9a3a2af368f4-8db1a361-branch-change.hg
  $ hg glog
  @    3:c07fa8b34d54 neither
  |\   abc ()
  | o  2:f2aa51777cc9 baz
  | |  abc ()
  o |  1:2e33c4f0856b bar
  |/   default ()
  o  0:91cfb6004abf foo
     default ()
  $ hg cat a
  neither