$ cat >> $HGRCPATH <<EOF

  > [extensions]

  > EOF

  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

  $ hg init test-repo

  $ cd test-repo

  $ touch a

  $ hg add a

  $ hg commit -m 'added a'

  $ touch b

  $ hg add b

  $ hg commit -m 'added b'

  $ hg bookmark mark

  $ hg bookmarks

   * mark                      1:6e742c9127b3

  $ hg prev -B

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [0] added a

  $ hg bookmarks

   * mark                      0:a154386e50d1

hg next -B should move active bookmark

  $ hg next -B --dry-run

  hg update 1;

  hg bookmark mark -r 1;

  [1] added b

  $ hg next -B

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [1] added b

  $ hg bookmarks

   * mark                      1:6e742c9127b3

hg prev should unset active bookmark

  $ hg prev --dry-run

  hg update 0;

  [0] added a

  $ hg prev

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [0] added a

  $ hg bookmarks

     mark                      1:6e742c9127b3

hg next should move active bookmark

  $ hg bookmark mark2

  $ hg bookmarks

     mark                      1:6e742c9127b3

   * mark2                     0:a154386e50d1

  $ hg next --dry-run --color=debug

  hg update 1;

  [[evolve.rev|1]] added b

  $ hg next

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [1] added b

  $ hg bookmarks

     mark                      1:6e742c9127b3

     mark2                     0:a154386e50d1

  $ hg bookmark -d mark2

  $ hg bookmark mark

hg next/prev should not interfere with inactive bookmarks

  $ touch c

  $ hg add c

  $ hg commit -m 'added c'

  $ hg bookmark -r2 no-move

  $ hg prev -B

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [1] added b

  $ hg bookmarks

   * mark                      1:6e742c9127b3

     no-move                   2:4e26ef31f919

  $ hg next -B

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [2] added c

  $ hg bookmarks

   * mark                      2:4e26ef31f919

     no-move                   2:4e26ef31f919

  $ hg up 1

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  (leaving bookmark mark)

  $ hg next -B

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [2] added c

  $ hg bookmarks

     mark                      2:4e26ef31f919

     no-move                   2:4e26ef31f919

  $ hg prev -B

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [1] added b

  $ hg bookmarks

     mark                      2:4e26ef31f919

     no-move                   2:4e26ef31f919

test prev on root

  $ hg up null

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

  $ hg prev

  already at repository root

  [1]

  $ hg up 1

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

Behavior with local modification

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

  $ echo foo > modified-bar

  $ hg add modified-bar

  $ hg prev

  abort: uncommitted changes

  (do you want --merge?)

  [255]

  $ hg prev --merge

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [0] added a

  $ hg next

  abort: uncommitted changes

  (do you want --merge?)

  [255]

  $ hg next --merge

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [1] added b

Behavior with aspiring children

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

  $ hg revert --all

  forgetting modified-bar

  $ hg log -G

  o  changeset:   2:4e26ef31f919

  |  bookmark:    mark

  |  bookmark:    no-move

  |  tag:         tip

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     added c

  |

  @  changeset:   1:6e742c9127b3

  |  user:        test

  |  date:        Thu Jan 01 00:00:00 1970 +0000

  |  summary:     added b

  |

  o  changeset:   0:a154386e50d1

     user:        test

     date:        Thu Jan 01 00:00:00 1970 +0000

     summary:     added a

no children of any kind

  $ hg next

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [2] added c

  $ hg next

  no children

  [1]

  $ hg next --evolve

  no children

  [1]

  $ hg prev --dry-run --color=debug

  hg update 1;

  [[evolve.rev|1]] added b

  $ hg prev

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [1] added b

some aspiring children

  $ hg amend -m 'added b (2)'

  1 new orphan changesets

  $ hg next

  no children

  (1 unstable changesets to be evolved here, do you want --evolve?)

  [1]

  $ hg next --evolve --dry-run

  move:[2] added c

  atop:[3] added b (2)

  hg rebase -r 4e26ef31f919 -d 9ad178109a19

  working directory now at 9ad178109a19

(add color output for smoke testing)

  $ hg next --evolve --color debug

  move:[[evolve.rev|2]] added c

  atop:[[evolve.rev|3]] added b (2)

  [ ui.status|working directory now at [evolve.node|e3b6d5df389b]]

next with ambiguity

  $ hg prev

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [3] added b (2)

  $ echo d > d

  $ hg add d

  $ hg commit -m 'added d'

  created new head

  $ hg prev

  0 files updated, 0 files merged, 1 files removed, 0 files unresolved

  [3] added b (2)

  $ hg next

  ambigious next changeset:

  [4] added c

  [5] added d

  explicitly update to one of them

  [1]

next with ambiguity in aspiring children

  $ hg am -m 'added b (3)'

  2 new orphan changesets

  $ hg next

  no children

  (2 unstable changesets to be evolved here, do you want --evolve?)

  [1]

  $ hg next --evolve

  ambigious next (unstable) changeset:

  [4] added c

  [5] added d

  (run 'hg evolve --rev REV' on one of them)

  [1]

  $ hg evolve -r 5

  move:[5] added d

  atop:[6] added b (3)

  working directory is now at 47ea25be8aea

  $ cd ..

prev and next should lock properly against other commands

  $ hg init repo

  $ cd repo

  $ HGEDITOR=${TESTDIR}/fake-editor.sh

  $ echo hi > foo

  $ hg ci -Am 'one'

  adding foo

  $ echo bye > foo

  $ hg ci -Am 'two'

  $ hg amend --edit &

  $ sleep 1

  $ hg prev

  waiting for lock on working directory of $TESTTMP/repo held by process '*' on host '*' (glob)

  got lock after [4-6] seconds (re)

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  [0] one

  $ wait

  $ hg amend --edit &

  $ sleep 1

  $ hg next --evolve

  waiting for lock on working directory of $TESTTMP/repo held by process '*' on host '*' (glob)

  1 new orphan changesets

  got lock after [4-6] seconds (re)

  move:[2] two

  atop:[3] one

  working directory now at a7d885c75614

  $ wait