view tests/test-topic-stack-data.t @ 5926:aca07ac01167

divergence-resolution: use last evolution date to choose p1 when merging

Before this patch, we choose the minimum revision as p1 while merging the
two divergent csets which had a drawback that if independent user resolve
the same divergence, their final resolved cset would have different hashes
(because of 'divergence_source_local' and 'divergence_source_other' extras).

Now, we decide the p1 on the basis of which of the two divergent cset
was rewritten more recently. This new logic removes the "different hash"
problem.

To save us from big output changes in the tests due to this change, I also
added the second factor i.e revision_number while sorting the csets wrt dates
(as date is same for all the csets in tests) to fallback to the old way of
picking the revision i.e choosing the minimum rev number.

And to demonstrate that now divergence resolution is independent of which
side user run the `hg evolve --content-div` resolved cset id won't change,
I have added a separate test file.
Flag --config devel.default-date='...' is being used here to record a
custom date in the obsmarkers.

Setup
=====

  $ . "$TESTDIR/testlib/topic_setup.sh"

  $ hg init test-list
  $ cd test-list
  $ cat <<EOF >> .hg/hgrc
  > [phases]
  > publish=false
  > EOF
  $ cat <<EOF >> $HGRCPATH
  > [experimental]
  > # disable the new graph style until we drop 3.7 support
  > graphstyle.missing = |
  > # turn evolution on
  > evolution=all
  > EOF


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

Build some basic graph
----------------------

  $ for x in base_a base_b base_c base_d base_e ; do
  >   mkcommit $x
  > done

Add another branch with two heads

  $ hg up 'desc(base_a)'
  0 files updated, 0 files merged, 4 files removed, 0 files unresolved
  $ hg branch lake
  marked working directory as branch lake
  (branches are permanent and global, did you want a bookmark?)
  $ mkcommit lake_a
  $ mkcommit lake_b
  $ hg up 'desc(lake_a)'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit lake_c
  created new head
  (consider using topic for lightweight branches. See 'hg help topic')


Add some topics
---------------

A simple topic that need rebasing

  $ hg up 'desc(base_c)'
  2 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg topic baz
  marked working directory as topic: baz
  $ mkcommit baz_a
  active topic 'baz' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit baz_b

A simple topic with instability

  $ hg up 'desc(base_d)'
  1 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg topic fuz
  marked working directory as topic: fuz
  $ mkcommit fuz_a
  active topic 'fuz' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit fuz_b
  $ mkcommit fuz_c
  $ hg up 'desc(fuz_a)'
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg commit --amend --message 'fuz1_a'
  2 new orphan changesets

A topic with multiple heads

  $ hg up 'desc(base_e)'
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg topic bar
  marked working directory as topic: bar
  $ mkcommit bar_a
  active topic 'bar' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit bar_b
  $ mkcommit bar_c
  $ hg up 'desc(bar_b)'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit bar_d
  $ mkcommit bar_e
  $ hg up 'desc(bar_d)'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg commit --amend --message 'bar1_d'
  1 new orphan changesets

topic 'foo' on the multi headed branch

  $ hg up 'desc(lake_a)'
  1 files updated, 0 files merged, 7 files removed, 0 files unresolved
  $ hg topic foo
  marked working directory as topic: foo
  $ mkcommit foo_a
  active topic 'foo' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit foo_b

Summary
-------

  $ hg summary
  parent: 21:3e54b49a3113 tip
   add foo_b
  branch: lake:foo
  commit: (clean)
  update: (current)
  phases: 22 draft
  orphan: 3 changesets
  topic:  foo
  $ hg log --graph -T '{desc} ({branch}) [{topic}]'
  @  add foo_b (lake) [foo]
  |
  o  add foo_a (lake) [foo]
  |
  | o  bar1_d (default) [bar]
  | |
  | | *  add bar_e (default) [bar]
  | | |
  | | x  add bar_d (default) [bar]
  | |/
  | | o  add bar_c (default) [bar]
  | |/
  | o  add bar_b (default) [bar]
  | |
  | o  add bar_a (default) [bar]
  | |
  | | o  fuz1_a (default) [fuz]
  | | |
  | | | *  add fuz_c (default) [fuz]
  | | | |
  | | | *  add fuz_b (default) [fuz]
  | | | |
  | | | x  add fuz_a (default) [fuz]
  | | |/
  | | | o  add baz_b (default) [baz]
  | | | |
  | | | o  add baz_a (default) [baz]
  | | | |
  +-------o  add lake_c (lake) []
  | | | |
  +-------o  add lake_b (lake) []
  | | | |
  o | | |  add lake_a (lake) []
  | | | |
  | o | |  add base_e (default) []
  | |/ /
  | o /  add base_d (default) []
  | |/
  | o  add base_c (default) []
  | |
  | o  add base_b (default) []
  |/
  o  add base_a (default) []
  

Actual Testing
==============

basic output

  $ hg topic
     bar (5 changesets, 1 unstable, 2 heads)
     baz (2 changesets)
   * foo (2 changesets)
     fuz (3 changesets, 2 unstable)

quiet version

  $ hg topic --quiet
  bar
  baz
  foo
  fuz

verbose

  $ hg topic --verbose
     bar (on branch: default, 5 changesets, 1 unstable, 2 heads)
     baz (on branch: default, 2 changesets, 2 behind)
   * foo (on branch: lake, 2 changesets, ambiguous destination: branch 'lake' has 2 heads)
     fuz (on branch: default, 3 changesets, 2 unstable, 1 behind)

json

  $ hg topic -T json
  [
   {
    "active": false,
    "changesetcount": 5,
    "headcount": 2,
    "topic": "bar",
    "unstablecount": 1
   },
   {
    "active": false,
    "changesetcount": 2,
    "topic": "baz"
   },
   {
    "active": true,
    "changesetcount": 2,
    "topic": "foo"
   },
   {
    "active": false,
    "changesetcount": 3,
    "topic": "fuz",
    "unstablecount": 2
   }
  ]

json --verbose

  $ hg topic -T json --verbose
  [
   {
    "active": false,
    "branches+": "default",
    "changesetcount": 5,
    "headcount": 2,
    "topic": "bar",
    "unstablecount": 1
   },
   {
    "active": false,
    "behindcount": 2,
    "branches+": "default",
    "changesetcount": 2,
    "topic": "baz"
   },
   {
    "active": true,
    "behinderror": "ambiguous destination: branch 'lake' has 2 heads",
    "branches+": "lake",
    "changesetcount": 2,
    "topic": "foo"
   },
   {
    "active": false,
    "behindcount": 1,
    "branches+": "default",
    "changesetcount": 3,
    "topic": "fuz",
    "unstablecount": 2
   }
  ]

Also test this situation with 'hg stack'
=======================================

  $ hg stack bar
  ### topic: bar (2 heads)
  ### target: default (branch)
  s5: add bar_c
  s2^ add bar_b (base)
  s4$ add bar_e (orphan)
  s3: bar1_d
  s2: add bar_b
  s1: add bar_a
  s0^ add base_e (base)
  $ hg stack bar -v
  ### topic: bar (2 heads)
  ### target: default (branch)
  s5(9cbadf11b44d): add bar_c
  s2(e555c7e8c767)^ add bar_b (base)
  s4(a920412b5a05)$ add bar_e (orphan)
  s3(6915989374b1): bar1_d
  s2(e555c7e8c767): add bar_b
  s1(a5c2b4e00bbf): add bar_a
  s0(92f489a6251f)^ add base_e (base)
  $ hg stack baz
  ### topic: baz
  ### target: default (branch), 2 behind
  s2: add baz_b
  s1: add baz_a
  s0^ add base_c (base)
  $ hg stack foo
  ### topic: foo
  ### target: lake (branch), ambiguous rebase destination - branch 'lake' has 2 heads
  s2@ add foo_b (current)
  s1: add foo_a
  s0^ add lake_a (base)
  $ hg stack fuz
  ### topic: fuz
  ### target: default (branch), 1 behind
  s3$ add fuz_c (orphan)
  s2$ add fuz_b (orphan)
  s1: fuz1_a
  s0^ add base_d (base)