annotate tests/test-topic.t @ 2950:1b4c92621e23

doc: integrate graphviz graphs in tutorials

Use the mercurial-graphviz extension
(https://bitbucket.org/octobus/mercurial_graphviz) in tutorials in order to
have some dot graphs in the tutorials .t files.

In order to run the tests, export the GRAPHVIZ_EXTENSION variable which points
to your copy of the extension. Please be aware that pygraphviz should be
installed in your environment.

That should be sufficient for generating dot graphs in text format.

Then generate the doc as usual, the sphinx-graphviz extension (http://www
.sphinx-doc.org/en/stable/ext/graphviz.html) has been added and it should
handle the generation of the graphs. Please be aware that you need the dot
binary installed in your system. Please refer to the extension documentation
for more configuration.

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

  $ hg init pinky
  $ cd pinky
  $ 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 = |
  > EOF

  $ hg help topics
  hg topics [TOPIC]
  
  View current topic, set current topic, change topic for a set of revisions, or
  see all topics.
  
      Clear topic on existing topiced revisions:
  
        hg topic --rev <related revset> --clear
  
      Change topic on some revisions:
  
        hg topic <newtopicname> --rev <related revset>
  
      Clear current topic:
  
        hg topic --clear
  
      Set current topic:
  
        hg topic <topicname>
  
      List of topics:
  
        hg topics
  
      List of topics with their last touched time sorted according to it:
  
        hg topic --age
  
      The active topic (if any) will be prepended with a "*".
  
      The '--current' flag helps to take active topic into account. For example,
      if you want to set the topic on all the draft changesets to the active
      topic, you can do: 'hg topic -r "draft()" --current'
  
      The --verbose version of this command display various information on the
      state of each topic.
  
  options ([+] can be repeated):
  
      --clear       clear active topic if any
   -r --rev REV [+] revset of existing revisions
   -l --list        show the stack of changeset in the topic
      --age         show when you last touched the topics
      --current     display the current topic only
  
  (some details hidden, use --verbose to show complete help)
  $ hg topics

Test topics interaction with evolution:

  $ hg topics --config experimental.evolution=
  $ hg topics --config experimental.evolution= --rev . bob
  abort: must have obsolete enabled to change topics
  [255]

Create some changes:

  $ for x in alpha beta gamma delta ; do
  >   echo file $x >> $x
  >   hg addremove
  >   hg ci -m "Add file $x"
  > done
  adding alpha
  adding beta
  adding gamma
  adding delta

Still no topics
  $ hg topics
  $ hg topics --current
  no active topic
  [1]
  $ hg topics --current somerandomtopic
  abort: cannot use --current when setting a topic
  [255]
  $ hg topics --current --clear
  abort: cannot use --current and --clear
  [255]
  $ hg topics --clear somerandomtopic
  abort: cannot use --clear when setting a topic
  [255]

Trying some invalid topicnames

  $ hg topic '.'
  abort: the name '.' is reserved
  [255]
  $ hg topic null
  abort: the name 'null' is reserved
  [255]
  $ hg topic tip
  abort: the name 'tip' is reserved
  [255]
  $ hg topic 12345
  abort: cannot use an integer as a name
  [255]
  $ hg topic '   '
  abort: topic name cannot consist entirely of whitespaces
  [255]

Test commit flag and help text

  $ echo stuff >> alpha
  $ HGEDITOR=cat hg ci -t topicflag
  
  
  HG: Enter commit message.  Lines beginning with 'HG:' are removed.
  HG: Leave message empty to abort commit.
  HG: --
  HG: user: test
  HG: topic 'topicflag'
  HG: branch 'default'
  HG: changed alpha
  abort: empty commit message
  [255]
  $ hg revert alpha
  $ hg topic
   * topicflag

Make a topic

  $ hg topic narf
  $ hg topics
   * narf
  $ hg topics -v
   * narf (on branch: default, 0 changesets)
  $ hg stack
  ### topic: narf
  ### branch: default
  (stack is empty)
  t0^ Add file delta (base)

Add commits to topic

  $ echo topic work >> alpha
  $ hg ci -m 'start on narf'
  $ hg co .^
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg topic fran
  $ hg topics
   * fran
     narf
  $ hg topics --current
  fran
  $ echo >> fran work >> beta
  $ hg ci -m 'start on fran'
  $ hg co narf
  switching to topic narf
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg topic
     fran
   * narf
  $ hg log -r . -T '{topics}\n'
  narf
  $ echo 'narf!!!' >> alpha
  $ hg ci -m 'narf!'
  $ hg log -G
  @  changeset:   6:7c34953036d6
  |  tag:         tip
  |  topic:       narf
  |  parent:      4:fb147b0b417c
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     narf!
  |
  | o  changeset:   5:0469d521db49
  | |  topic:       fran
  | |  parent:      3:a53952faf762
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     start on fran
  | |
  o |  changeset:   4:fb147b0b417c
  |/   topic:       narf
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     start on narf
  |
  o  changeset:   3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file delta
  |
  o  changeset:   2:15d1eb11d2fa
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file gamma
  |
  o  changeset:   1:c692ea2c9224
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file beta
  |
  o  changeset:   0:c2b7d2f7d14b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     Add file alpha
  

Exchanging of topics:
  $ cd ..
  $ hg init brain
  $ hg -R pinky push -r 4 brain
  pushing to brain
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 4 files

Export

  $ hg -R pinky export
  # HG changeset patch
  # User test
  # Date 0 0
  #      Thu Jan 01 00:00:00 1970 +0000
  # Node ID 7c34953036d6a36eae468c550d0592b89ee8bffc
  # Parent  fb147b0b417c25ca15547cd945acf51cf8dcaf02
  # EXP-Topic narf
  narf!
  
  diff -r fb147b0b417c -r 7c34953036d6 alpha
  --- a/alpha	Thu Jan 01 00:00:00 1970 +0000
  +++ b/alpha	Thu Jan 01 00:00:00 1970 +0000
  @@ -1,2 +1,3 @@
   file alpha
   topic work
  +narf!!!

Import

  $ hg -R pinky export > narf.diff
  $ hg -R pinky --config extensions.strip= strip .
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/pinky/.hg/strip-backup/7c34953036d6-1ff3bae2-backup.hg (glob)
  $ hg -R pinky import narf.diff
  applying narf.diff
  $ hg -R pinky log -r .
  changeset:   6:7c34953036d6
  tag:         tip
  topic:       narf
  parent:      4:fb147b0b417c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     narf!
  
Now that we've pushed to brain, the work done on narf is no longer a
draft, so we won't see that topic name anymore:

  $ hg log -R pinky -G
  @  changeset:   6:7c34953036d6
  |  tag:         tip
  |  topic:       narf
  |  parent:      4:fb147b0b417c
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     narf!
  |
  | o  changeset:   5:0469d521db49
  | |  topic:       fran
  | |  parent:      3:a53952faf762
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     start on fran
  | |
  o |  changeset:   4:fb147b0b417c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     start on narf
  |
  o  changeset:   3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file delta
  |
  o  changeset:   2:15d1eb11d2fa
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file gamma
  |
  o  changeset:   1:c692ea2c9224
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file beta
  |
  o  changeset:   0:c2b7d2f7d14b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     Add file alpha
  
  $ cd brain
  $ hg co tip
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved

Because the change is public, we won't inherit the topic from narf.

  $ hg topic
  $ echo what >> alpha
  $ hg topic query
  $ hg ci -m 'what is narf, pinky?'
  $ hg log -Gl2
  @  changeset:   5:c01515cfc331
  |  tag:         tip
  |  topic:       query
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     what is narf, pinky?
  |
  o  changeset:   4:fb147b0b417c
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on narf
  |

  $ hg push -f ../pinky -r query
  pushing to ../pinky
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)

  $ hg -R ../pinky log -Gl 4
  o  changeset:   7:c01515cfc331
  |  tag:         tip
  |  topic:       query
  |  parent:      4:fb147b0b417c
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     what is narf, pinky?
  |
  | @  changeset:   6:7c34953036d6
  |/   topic:       narf
  |    parent:      4:fb147b0b417c
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     narf!
  |
  | o  changeset:   5:0469d521db49
  | |  topic:       fran
  | |  parent:      3:a53952faf762
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     start on fran
  | |
  o |  changeset:   4:fb147b0b417c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     start on narf
  |

  $ hg topics
   * query
  $ cd ../pinky
  $ hg co query
  switching to topic query
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo answer >> alpha
  $ hg ci -m 'Narf is like `zort` or `poit`!'
  $ hg merge narf
  merging alpha
  warning: conflicts while merging alpha! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
  [1]
  $ hg revert -r narf alpha
  $ hg resolve -m alpha
  (no more unresolved files)
  $ hg topic narf
  $ hg ci -m 'Finish narf'
  $ hg topics
     fran
   * narf
     query
  $ hg debugnamecomplete # branch:topic here is a buggy side effect
  default
  default:fran
  default:narf
  default:query
  fran
  narf
  query
  tip
  $ hg phase --public narf

POSSIBLE BUG: narf topic stays alive even though we just made all
narf commits public:

  $ hg topics
     fran
   * narf
  $ hg log -Gl 6
  @    changeset:   9:ae074045b7a7
  |\   tag:         tip
  | |  parent:      8:54c943c1c167
  | |  parent:      6:7c34953036d6
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Finish narf
  | |
  | o  changeset:   8:54c943c1c167
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Narf is like `zort` or `poit`!
  | |
  | o  changeset:   7:c01515cfc331
  | |  parent:      4:fb147b0b417c
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     what is narf, pinky?
  | |
  o |  changeset:   6:7c34953036d6
  |/   parent:      4:fb147b0b417c
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     narf!
  |
  | o  changeset:   5:0469d521db49
  | |  topic:       fran
  | |  parent:      3:a53952faf762
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     start on fran
  | |
  o |  changeset:   4:fb147b0b417c
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     start on narf
  |

  $ cd ../brain
  $ hg topics
   * query
  $ hg pull ../pinky -r narf
  pulling from ../pinky
  abort: unknown revision 'narf'!
  [255]
  $ hg pull ../pinky -r default
  pulling from ../pinky
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 1 files
  (run 'hg update' to get a working copy)
  $ hg topics
   * query

We can pull in the draft-phase change and we get the new topic

  $ hg pull ../pinky
  pulling from ../pinky
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  (run 'hg heads' to see heads)
  $ hg topics
     fran
   * query
  $ hg log -Gr 'draft()'
  o  changeset:   9:0469d521db49
  |  tag:         tip
  |  topic:       fran
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

query is not an open topic, so when we clear the current topic it'll
disappear:

  $ hg topics --clear
  $ hg topics
     fran

--clear when we don't have an active topic isn't an error:

  $ hg topics --clear

Topic revset
  $ hg log -r 'topic()' -G
  o  changeset:   9:0469d521db49
  |  tag:         tip
  |  topic:       fran
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |
  $ hg log -r 'not topic()' -G
  o    changeset:   8:ae074045b7a7
  |\   parent:      7:54c943c1c167
  | |  parent:      6:7c34953036d6
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Finish narf
  | |
  | o  changeset:   7:54c943c1c167
  | |  parent:      5:c01515cfc331
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     Narf is like `zort` or `poit`!
  | |
  o |  changeset:   6:7c34953036d6
  | |  parent:      4:fb147b0b417c
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     narf!
  | |
  | @  changeset:   5:c01515cfc331
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     what is narf, pinky?
  |
  o  changeset:   4:fb147b0b417c
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on narf
  |
  o  changeset:   3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file delta
  |
  o  changeset:   2:15d1eb11d2fa
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file gamma
  |
  o  changeset:   1:c692ea2c9224
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     Add file beta
  |
  o  changeset:   0:c2b7d2f7d14b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     Add file alpha
  
No matches because narf is already closed:
  $ hg log -r 'topic(narf)' -G
This regexp should match the topic `fran`:
  $ hg log -r 'topic("re:.ra.")' -G
  o  changeset:   9:0469d521db49
  |  tag:         tip
  |  topic:       fran
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |
Exact match on fran:
  $ hg log -r 'topic(fran)' -G
  o  changeset:   9:0469d521db49
  |  tag:         tip
  |  topic:       fran
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Match current topic:
  $ hg topic
     fran
  $ hg log -r 'topic(.)'
(no output is expected)
  $ hg co fran
  switching to topic fran
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -r 'topic(.)'
  changeset:   9:0469d521db49
  tag:         tip
  topic:       fran
  parent:      3:a53952faf762
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     start on fran
  

Deactivate the topic.
  $ hg topics
   * fran
  $ hg topics --clear
  $ echo fran? >> beta
  $ hg ci -m 'fran?'
  created new head
  $ hg log -Gr 'draft()'
  @  changeset:   10:4073470c35e1
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     fran?
  |
  o  changeset:   9:0469d521db49
  |  topic:       fran
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |
  $ hg topics
     fran
Changing topic fails if we don't give a topic
  $ hg topic --rev 9
  abort: changing topic requires a topic name or --clear
  [255]

Can't change topic of a public change
  $ hg topic --rev 1:: --clear
  abort: can't change topic of a public change
  [255]

Can clear topics
  $ hg topic --rev 9 --clear
  changed topic on 1 changes
  $ hg log -Gr 'draft() and not obsolete()'
  o  changeset:   11:0beca5ab56c3
  |  tag:         tip
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |
  | @  changeset:   10:4073470c35e1
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: orphan
  | |  summary:     fran?
  | |

Normally you'd do this with evolve, but we'll use rebase to avoid
bonus deps in the testsuite.

  $ hg rebase -d tip -s .
  rebasing 10:4073470c35e1 "fran?"

Can add a topic to an existing change
  $ hg topic
  $ hg sum
  parent: 12:18b70b8de1f0 tip
   fran?
  branch: default
  commit: (clean)
  update: 5 new changesets, 2 branch heads (merge)
  phases: 2 draft
  $ hg topic --rev 11 wat
  changed topic on 1 changes
  $ hg log -r .
  changeset:   12:18b70b8de1f0
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  instability: orphan
  summary:     fran?
  
  $ hg sum
  parent: 12:18b70b8de1f0  (orphan)
   fran?
  branch: default
  commit: (clean)
  update: 5 new changesets, 2 branch heads (merge)
  phases: 3 draft
  orphan: 1 changesets
  $ hg topic
     wat
  $ hg log -Gr 'draft() and not obsolete()'
  o  changeset:   13:686a642006db
  |  tag:         tip
  |  topic:       wat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |
  | @  changeset:   12:18b70b8de1f0
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  instability: orphan
  | |  summary:     fran?
  | |

Normally you'd do this with evolve, but we'll use rebase to avoid
bonus deps in the testsuite.

  $ hg topic
     wat
  $ hg rebase -d tip -s .
  rebasing 12:18b70b8de1f0 "fran?"
  switching to topic wat
  $ hg topic
     wat

  $ hg log -Gr 'draft()'
  @  changeset:   14:45358f7a5892
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     fran?
  |
  o  changeset:   13:686a642006db
  |  topic:       wat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Amend a topic

  $ hg topic watwat
  $ hg ci --amend
  $ hg log -Gr 'draft()'
  @  changeset:   15:6c40a4c21bbe
  |  tag:         tip
  |  topic:       watwat
  |  parent:      13:686a642006db
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     fran?
  |
  o  changeset:   13:686a642006db
  |  topic:       wat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Clear and amend:

  $ hg topic --clear
  $ hg ci --amend
  $ hg log -r .
  changeset:   16:0f9cd5070654
  tag:         tip
  parent:      13:686a642006db
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     fran?
  
Reading the same topic with topic --rev should work:
  $ hg topic --rev . watwat
  switching to topic watwat
  changed topic on 1 changes

Testing issue5441
  $ hg co 17
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg log -Gr 'draft()'
  @  changeset:   17:980a0f608481
  |  tag:         tip
  |  topic:       watwat
  |  parent:      13:686a642006db
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     fran?
  |
  o  changeset:   13:686a642006db
  |  topic:       wat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Using the current flag

  $ hg topic changewat
  $ hg topics --rev '13::17' --current
  changed topic on 2 changes

  $ hg log -Gr 'draft()'
  @  changeset:   19:56c83be6105f
  |  tag:         tip
  |  topic:       changewat
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     fran?
  |
  o  changeset:   18:ceba5be9d56f
  |  topic:       changewat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Case with branching:

  $ hg up changewat
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg up t1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo gamma >> gamma
  $ hg ci -m gamma

  $ hg log -Gr 'draft()'
  @  changeset:   20:0d3d805542b4
  |  tag:         tip
  |  topic:       changewat
  |  parent:      18:ceba5be9d56f
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     gamma
  |
  | o  changeset:   19:56c83be6105f
  |/   topic:       changewat
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     fran?
  |
  o  changeset:   18:ceba5be9d56f
  |  topic:       changewat
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

  $ hg topics --rev 't1::' changewut
  switching to topic changewut
  changed topic on 3 changes

  $ hg log -Gr 'draft()'
  @  changeset:   23:729ed5717393
  |  tag:         tip
  |  topic:       changewut
  |  parent:      21:62e49f09f883
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     gamma
  |
  | o  changeset:   22:369c6e2e5474
  |/   topic:       changewut
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     fran?
  |
  o  changeset:   21:62e49f09f883
  |  topic:       changewut
  |  parent:      3:a53952faf762
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     start on fran
  |

Testing for updating to t0
==========================

  $ hg stack
  ### topic: changewut (2 heads)
  ### branch: default, 5 behind
  t3: fran?
  t1^ start on fran (base)
  t2@ gamma (current)
  t1: start on fran
  t0^ Add file delta (base)

  $ hg up t0
  preserving the current topic 'changewut'
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg topic
   * changewut
  $ hg stack
  ### topic: changewut (2 heads)
  ### branch: default, 5 behind
  t3: fran?
  t1^ start on fran (base)
  t2: gamma
  t1: start on fran
  t0^ Add file delta (base)

  $ hg topics --age
   * changewut (1970-01-01)

  $ cd ..

Testing the new config knob to forbid untopiced commit
======================================================

  $ hg init ponky
  $ cd ponky
  $ cat <<EOF >> .hg/hgrc
  > [phases]
  > publish=false
  > EOF
  $ cat <<EOF >> $HGRCPATH
  > [experimental]
  > enforce-topic = yes
  > EOF
  $ touch a b c d
  $ hg add a
  $ hg ci -m "Added a"
  abort: no active topic
  (set a current topic or use '--config experimental.enforce-topic=no' to commit without a topic)
  [255]

(same test, checking we abort before the editor)

  $ EDITOR=cat hg ci -m "Added a" --edit
  abort: no active topic
  (set a current topic or use '--config experimental.enforce-topic=no' to commit without a topic)
  [255]
  $ hg ci -m "added a" --config experimental.enforce-topic=no
  $ hg log
  changeset:   0:a154386e50d1
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     added a
  
Testing the --age flag for `hg topics`
======================================

  $ hg topic topic1970 --rev 0
  switching to topic topic1970
  changed topic on 1 changes

  $ hg add b
  $ hg topic topic1990
  $ hg ci -m "Added b" --config devel.default-date="631152000 0"
  $ hg add c
  $ hg topic topic2010
  $ hg ci -m "Added c" --config devel.default-date="1262304000 0"

  $ hg log -G
  @  changeset:   3:9048b194797d
  |  tag:         tip
  |  topic:       topic2010
  |  user:        test
  |  date:        Fri Jan 01 00:00:00 2010 +0000
  |  summary:     Added c
  |
  o  changeset:   2:186d493c7f8d
  |  topic:       topic1990
  |  user:        test
  |  date:        Mon Jan 01 00:00:00 1990 +0000
  |  summary:     Added b
  |
  o  changeset:   1:e5a30a141954
     topic:       topic1970
     parent:      -1:000000000000
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     added a
  
  $ hg topics
     topic1970
     topic1990
   * topic2010

  $ hg topics --age
   * topic2010 (2010-01-01)
     topic1990 (1990-01-01)
     topic1970 (1970-01-01)

  $ hg up topic1970
  switching to topic topic1970
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

  $ hg topics --age
     topic2010 (2010-01-01)
     topic1990 (1990-01-01)
   * topic1970 (1970-01-01)

  $ cd ..