view tests/test-topic-merge.t @ 6222:6020b7e92a86

topic: update topic() revset docstring, mention hg help

I was curious why we don't support glob patterns, only re. But turns out it's
like this in upstream (e.g. branch revset) as well, so let's point to the
relevant help page.

==========================================================
Testing the ability to control merge behavior around topic
==========================================================

Especially, we want to test mode allowing the creation of merge that will
eventually become "oedipus" merge.

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



Setup a test repository
=======================

  $ hg init test-repo
  $ cd test-repo
  $ mkcommit root
  $ mkcommit default-1
  $ mkcommit default-2
  $ hg up 'desc("default-2")'
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg topic test-topic
  marked working directory as topic: test-topic
  $ mkcommit topic-1
  active topic 'test-topic' grew its first changeset
  (see 'hg help topics' for more information)
  $ mkcommit topic-2
  $ hg up null
  0 files updated, 0 files merged, 5 files removed, 0 files unresolved
  $ hg log -G
  o  changeset:   4:c3ec1ef2bf00
  |  tag:         tip
  |  topic:       test-topic
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     topic-2
  |
  o  changeset:   3:3300cececc85
  |  topic:       test-topic
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     topic-1
  |
  o  changeset:   2:b05d997f9ab0
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     default-2
  |
  o  changeset:   1:ccab697ce421
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     default-1
  |
  o  changeset:   0:1e4be0697311
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     root
  

Test that the merge is rejected by default
==========================================

from the topic

  $ hg up test-topic
  switching to topic test-topic
  5 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge default
  abort: merging with a working directory ancestor has no effect
  [255]

from the bare branch

  $ hg up default
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg merge test-topic
  abort: nothing to merge
  (use 'hg update' or check 'hg heads')
  [255]

Test that the merge is rejected if set to reject
================================================

Actually, this also work with any invalid value, but:

- the default value might change in the future,
- this make sure we read the config right.

Same result when setting the config to be strict

  $ cat >> .hg/hgrc << EOF
  > [experimental]
  > topic.linear-merge = reject
  > EOF

from the topic

  $ hg up test-topic
  switching to topic test-topic
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge default
  abort: merging with a working directory ancestor has no effect
  [255]

from the bare branch

  $ hg up default
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg merge test-topic
  abort: nothing to merge
  (use 'hg update' or check 'hg heads')
  [255]

Test that the merge is accepted if configured to allow them
===========================================================

  $ cat >> .hg/hgrc << EOF
  > [experimental]
  > topic.linear-merge = allow-from-bare-branch
  > EOF

from the topic, this is rejected since the resulting merge would be in the topic itself

  $ hg up test-topic
  switching to topic test-topic
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge default
  abort: merging with a working directory ancestor has no effect
  [255]

from the bare branch this is allowed since the resulting merge will be in the branch

  $ hg up default
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg merge test-topic --traceback
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "How dreadful the knowledge of the truth can be when there's no help in truth."
  $ hg log -G
  @    changeset:   5:42ca2e8cb810
  |\   tag:         tip
  | |  parent:      2:b05d997f9ab0
  | |  parent:      4:c3ec1ef2bf00
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     How dreadful the knowledge of the truth can be when there's no help in truth.
  | |
  | o  changeset:   4:c3ec1ef2bf00
  | |  topic:       test-topic
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     topic-2
  | |
  | o  changeset:   3:3300cececc85
  |/   topic:       test-topic
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     topic-1
  |
  o  changeset:   2:b05d997f9ab0
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     default-2
  |
  o  changeset:   1:ccab697ce421
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     default-1
  |
  o  changeset:   0:1e4be0697311
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     root