view tests/test-evolve-topic.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.

Check we can find the topic extensions

  $ cat >> $HGRCPATH <<EOF
  > [defaults]
  > amend=-d "0 0"
  > fold=-d "0 0"
  > [phases]
  > publish = False
  > [ui]
  > logtemplate = {rev} - \{{get(namespaces, "topics")}} {node|short} {desc} ({phase})\n
  > [diff]
  > git = 1
  > unified = 0
  > [extensions]
  > rebase = 
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
  $ echo "topic=$(echo $(dirname $TESTDIR))/hgext3rd/topic/" >> $HGRCPATH

  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    hg ci -m "add $1"
  > }

Create a simple setup

  $ hg init repoa
  $ cd repoa
  $ mkcommit aaa
  $ mkcommit bbb
  $ hg topic foo
  marked working directory as topic: foo
  $ mkcommit ccc
  active topic 'foo' grew its first changeset
  $ mkcommit ddd
  $ mkcommit eee
  $ mkcommit fff
  $ hg topic bar
  $ mkcommit ggg
  active topic 'bar' grew its first changeset
  $ mkcommit hhh
  $ mkcommit iii
  $ mkcommit jjj

  $ hg log -G
  @  9 - {bar} 1d964213b023 add jjj (draft)
  |
  o  8 - {bar} fcab990f3261 add iii (draft)
  |
  o  7 - {bar} b0c2554835ac add hhh (draft)
  |
  o  6 - {bar} c748293f1c1a add ggg (draft)
  |
  o  5 - {foo} 6a6b7365c751 add fff (draft)
  |
  o  4 - {foo} 3969ab847d9c add eee (draft)
  |
  o  3 - {foo} 4e3a154f38c7 add ddd (draft)
  |
  o  2 - {foo} cced9bac76e3 add ccc (draft)
  |
  o  1 - {} a4dbed0837ea add bbb (draft)
  |
  o  0 - {} 199cc73e9a0b add aaa (draft)
  

Test that evolve --all evolve the current topic
-----------------------------------------------

make a mess

  $ hg up foo
  switching to topic foo
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ hg topic -l 
  ### topic: foo (?)
  ### branch: default (?)
  ### target: default (branch)
  t4@ add fff (current)
  t3: add eee
  t2: add ddd
  t1: add ccc
  t0^ add bbb (base)
  $ hg up 'desc(ddd)'
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ echo ddd >> ddd
  $ hg amend
  6 new orphan changesets
  $ hg up 'desc(fff)'
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo fff >> fff
  $ hg amend

  $ hg log -G
  @  11 - {foo} e104f49bab28 add fff (draft)
  |
  | o  10 - {foo} d9cacd156ffc add ddd (draft)
  | |
  | | *  9 - {bar} 1d964213b023 add jjj (draft)
  | | |
  | | *  8 - {bar} fcab990f3261 add iii (draft)
  | | |
  | | *  7 - {bar} b0c2554835ac add hhh (draft)
  | | |
  | | *  6 - {bar} c748293f1c1a add ggg (draft)
  | | |
  +---x  5 - {foo} 6a6b7365c751 add fff (draft)
  | |
  * |  4 - {foo} 3969ab847d9c add eee (draft)
  | |
  x |  3 - {foo} 4e3a154f38c7 add ddd (draft)
  |/
  o  2 - {foo} cced9bac76e3 add ccc (draft)
  |
  o  1 - {} a4dbed0837ea add bbb (draft)
  |
  o  0 - {} 199cc73e9a0b add aaa (draft)
  

Run evolve --all

  $ hg evolve --all
  move:[4] add eee
  atop:[10] add ddd
  move:[11] add fff
  atop:[12] add eee
  working directory is now at 070c5573d8f9
  $ hg log -G
  @  13 - {foo} 070c5573d8f9 add fff (draft)
  |
  o  12 - {foo} 42b49017ff90 add eee (draft)
  |
  o  10 - {foo} d9cacd156ffc add ddd (draft)
  |
  | *  9 - {bar} 1d964213b023 add jjj (draft)
  | |
  | *  8 - {bar} fcab990f3261 add iii (draft)
  | |
  | *  7 - {bar} b0c2554835ac add hhh (draft)
  | |
  | *  6 - {bar} c748293f1c1a add ggg (draft)
  | |
  | x  5 - {foo} 6a6b7365c751 add fff (draft)
  | |
  | x  4 - {foo} 3969ab847d9c add eee (draft)
  | |
  | x  3 - {foo} 4e3a154f38c7 add ddd (draft)
  |/
  o  2 - {foo} cced9bac76e3 add ccc (draft)
  |
  o  1 - {} a4dbed0837ea add bbb (draft)
  |
  o  0 - {} 199cc73e9a0b add aaa (draft)
  

Test that evolve does not loose topic information
-------------------------------------------------

  $ hg evolve --rev 'topic(bar)'
  move:[6] add ggg
  atop:[13] add fff
  move:[7] add hhh
  atop:[14] add ggg
  move:[8] add iii
  atop:[15] add hhh
  move:[9] add jjj
  atop:[16] add iii
  working directory is now at 9bf430c106b7
  $ hg log -G
  @  17 - {bar} 9bf430c106b7 add jjj (draft)
  |
  o  16 - {bar} d2dc89c57700 add iii (draft)
  |
  o  15 - {bar} 20bc4d02aa62 add hhh (draft)
  |
  o  14 - {bar} 16d6f664b17c add ggg (draft)
  |
  o  13 - {foo} 070c5573d8f9 add fff (draft)
  |
  o  12 - {foo} 42b49017ff90 add eee (draft)
  |
  o  10 - {foo} d9cacd156ffc add ddd (draft)
  |
  o  2 - {foo} cced9bac76e3 add ccc (draft)
  |
  o  1 - {} a4dbed0837ea add bbb (draft)
  |
  o  0 - {} 199cc73e9a0b add aaa (draft)
  

Tests next and prev behavior
============================

Basic move are restricted to the current topic

  $ hg up foo
  switching to topic foo
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [12] add eee
  $ hg next
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [13] add fff
  $ hg next
  no children on topic "foo"
  do you want --no-topic
  [1]
  $ hg next --no-topic
  switching to topic bar
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  [14] add ggg
  $ hg prev
  preserving the current topic 'bar'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [13] add fff
  $ hg prev
  no parent in topic "bar"
  (do you want --no-topic)
  [1]
  $ hg prev --no-topic
  switching to topic foo
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [12] add eee

Testing when instability is involved

  $ hg log -G
  o  17 - {bar} 9bf430c106b7 add jjj (draft)
  |
  o  16 - {bar} d2dc89c57700 add iii (draft)
  |
  o  15 - {bar} 20bc4d02aa62 add hhh (draft)
  |
  o  14 - {bar} 16d6f664b17c add ggg (draft)
  |
  o  13 - {foo} 070c5573d8f9 add fff (draft)
  |
  @  12 - {foo} 42b49017ff90 add eee (draft)
  |
  o  10 - {foo} d9cacd156ffc add ddd (draft)
  |
  o  2 - {foo} cced9bac76e3 add ccc (draft)
  |
  o  1 - {} a4dbed0837ea add bbb (draft)
  |
  o  0 - {} 199cc73e9a0b add aaa (draft)
  
  $ hg topic -r 070c5573d8f9 bar
  4 new orphan changesets
  changed topic on 1 changes
  $ hg up 16d6f664b17c
  switching to topic bar
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg stack
  ### topic: bar
  ### target: default (branch)
  t5$ add jjj (unstable)
  t4$ add iii (unstable)
  t3$ add hhh (unstable)
  t2$ add ggg (current unstable)
  t1: add fff
  t0^ add eee (base)

  $ hg prev
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  [18] add fff