view tests/test-prev-next.t @ 3573:d53277cdc1e7

evolve: handle stabilization of merge changeset with both parents obsoleted

This patch adds logic to stabilize an orphan merge changeset having both parents
obsoleted.

The logic tries to first stabilize the merge changeset on successor of second
parent and then stabilize the new changeset formed on the successor of first
parent. We are stabilizing on second parent first and then to second parent to
preserve the first parent's successor as first parent of the merge changeset.

Conflicts can occcur and we can loose processing information, therefore we store
a variable in statefile `orphanmerge` which represents whether we are processing
a merge changeset with both parents obsoleted.

Thanks to Pierre-Yves David for suggesting this way and helping to understand
the correctness of this.

More rigourous test cases for this will be added in next patch.

  $ cat >> $HGRCPATH <<EOF
  > [ui]
  > interactive = True
  > [extensions]
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH

hg prev & next move to parent/child
  $ 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 prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [0] added a
  $ hg next
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [1] added b

hg prev & next respect --quiet
  $ hg prev -q
  $ hg next -q

hg prev -B should move active bookmark
  $ 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 6e742c9127b3;
  hg bookmark mark -r 6e742c9127b3;
  [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 a154386e50d1;
  [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 6e742c9127b3;
  [[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 6e742c9127b3;
  [[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

(add color output for smoke testing)

  $ hg next --evolve --color debug
  [evolve.operation|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 <<EOF
  > 1
  > EOF
  ambiguous next changeset, choose one to update:
  0: [e3b6d5df389b] added c
  1: [9df671ccd2c7] added d
  q: quit the prompt
  enter the index of the revision you want to select: 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [5] added d

  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [3] added b (2)

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 <<EOF
  > 0
  > EOF
  ambiguous next (unstable) changeset, choose one to evolve and update:
  0: [e3b6d5df389b] added c
  1: [9df671ccd2c7] added d
  q: quit the prompt
  enter the index of the revision you want to select: 0
  move:[4] added c
  atop:[6] added b (3)
  working directory now at 5ce67c2407b0

  $ hg log -GT "{rev}:{node|short} {desc}\n"
  @  7:5ce67c2407b0 added c
  |
  o  6:d7f119adc759 added b (3)
  |
  | *  5:9df671ccd2c7 added d
  | |
  | x  3:9ad178109a19 added b (2)
  |/
  o  0:a154386e50d1 added a
  

  $ hg evolve -r 5
  move:[5] added d
  atop:[6] added b (3)
  working directory is now at 47ea25be8aea

prev with multiple parents

  $ hg log -GT "{rev}:{node|short} {desc}\n"
  @  8:47ea25be8aea added d
  |
  | o  7:5ce67c2407b0 added c
  |/
  o  6:d7f119adc759 added b (3)
  |
  o  0:a154386e50d1 added a
  
  $ hg merge -r 5ce67c2407b0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merge commit"

  $ hg prev <<EOF
  > q
  > EOF
  multiple parents, choose one to update:
  0: [47ea25be8aea] added d
  1: [5ce67c2407b0] added c
  q: quit the prompt
  enter the index of the revision you want to select: q
  [8] added d
  [7] added c
  multiple parents, explicitly update to one
  [1]

  $ hg prev --config ui.interactive=False
  [8] added d
  [7] added c
  multiple parents, explicitly update to one
  [1]

  $ hg prev <<EOF
  > 1
  > EOF
  multiple parents, choose one to update:
  0: [47ea25be8aea] added d
  1: [5ce67c2407b0] added c
  q: quit the prompt
  enter the index of the revision you want to select: 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [7] added c

  $ hg log -GT "{rev}:{node|short} {desc}\n"
  o    9:a4b8c25a87d3 merge commit
  |\
  | o  8:47ea25be8aea added d
  | |
  @ |  7:5ce67c2407b0 added c
  |/
  o  6:d7f119adc759 added b (3)
  |
  o  0:a154386e50d1 added a
  

  $ cd ..

prev and next should lock properly against other commands

  $ hg init repo
  $ cd repo
  $ HGEDITOR="sh ${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