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

  commit: (clean)

  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)