view tests/test-minitopic.t @ 5777:c5dfbbe4363d

evolve: when relocating, optionally first try to do it using in-memory merge

This patch adds a config option to let run evolve's relocation step
using in-memory merge. It is disabled by default. When the option is
on, the relocation is first attempted in memory. If that fails because
of merge conflicts, it retries that commit in the working copy.

There are a few reasons that I made it configurable. The most
important one is that the precommit hook won't trigger when using
in-memory merge. Another reason is that it lets us roll out the
feature slowly to our users at Google.

For now, we also update the working copy after creating the commit (in the
successful case, when there are no merge conflicts). The next patch will make it
so we don't do that update.

Because of the unnecessary working-copy update, this patch doesn't
provide any benefit on its own. Evolving 29 commits that each change
one line in the hg slows down from ~4.5s to ~4.8s when the config
option is on.

I've added `#testcases inmemory ondisk` to select `.t` files. Almost
all differences are because of the new "hit merge conflicts" message
and retrying the merge. There's also one difference in
`test-stabilize-order.t` caused by the different order of working copy
updates (we now update the working copy at the end).

  $ . $TESTDIR/testlib/common.sh

setup
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > share=
  > blackbox=
  > [web]
  > allow_push = *
  > push_ssl = no
  > [phases]
  > publish = False
  > [paths]
  > enabled = http://localhost:$HGPORT/
  > disabled = http://localhost:$HGPORT2/
  > EOF

  $ hg init ./server-enabled
  $ cat >> server-enabled/.hg/hgrc << EOF
  > [extensions]
  > serverminitopic=
  > [experimental]
  > server-mini-topic = yes
  > EOF

  $ hg share ./server-enabled ./server-disabled
  updating working directory
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat >> server-disabled/.hg/hgrc << EOF
  > [extensions]
  > serverminitopic=
  > [experimental]
  > server-mini-topic = no
  > EOF

  $ hg init client-disabled
  $ hg init client-enabled
  $ cat >> client-enabled/.hg/hgrc << EOF
  > [extensions]
  > topic=
  > EOF

  $ hg serve -R server-enabled -p $HGPORT -d --pid-file hg1.pid --errorlog hg1.error
  $ cat hg1.pid > $DAEMON_PIDS
  $ hg serve -R server-disabled -p $HGPORT2 -d --pid-file hg2.pid --errorlog hg2.error
  $ cat hg2.pid >> $DAEMON_PIDS

  $ hg debugdownload http://localhost:$HGPORT/?cmd=capabilities | grep -o topics
  topics
  $ hg debugdownload http://localhost:$HGPORT2/?cmd=capabilities | grep -o topics
  [1]

Pushing first changesets to the servers
--------------------------------------

  $ cd client-enabled
  $ mkcommit c_A0
  $ hg push enabled
  pushing to http://localhost:$HGPORT/
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files
  $ mkcommit c_B0
  $ hg push disabled
  pushing to http://localhost:$HGPORT2/
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files

  $ cat $TESTTMP/hg1.error
  $ cat $TESTTMP/hg2.error

Pushing new head
----------------

  $ hg up 'desc("c_A0")'
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ mkcommit c_C0
  created new head
  (consider using topic for lightweight branches. See 'hg help topic')
  $ hg push enabled
  pushing to http://localhost:$HGPORT/
  searching for changes
  abort: push creates new remote head 22c9514ed811
  (merge or see 'hg help push' for details about pushing new heads)
  [20]
  $ hg push disabled
  pushing to http://localhost:$HGPORT2/
  searching for changes
  abort: push creates new remote head 22c9514ed811
  (merge or see 'hg help push' for details about pushing new heads)
  [20]

  $ hg debugdownload http://localhost:$HGPORT/?cmd=branchmap | sort
  default 0ab6d544d0efd629fda056601cfe95e73d1af210
  $ hg debugdownload http://localhost:$HGPORT2/?cmd=branchmap | sort
  default 0ab6d544d0efd629fda056601cfe95e73d1af210
  $ cat $TESTTMP/hg1.error
  $ cat $TESTTMP/hg2.error

Pushing new topic
-----------------

  $ hg merge
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ mkcommit c_D0
  $ hg log -G
  @    changeset:   3:9c660cf97499
  |\   tag:         tip
  | |  parent:      2:22c9514ed811
  | |  parent:      1:0ab6d544d0ef
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     c_D0
  | |
  | o  changeset:   2:22c9514ed811
  | |  parent:      0:14faebcf9752
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     c_C0
  | |
  o |  changeset:   1:0ab6d544d0ef
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     c_B0
  |
  o  changeset:   0:14faebcf9752
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     c_A0
  
  $ hg push enabled
  pushing to http://localhost:$HGPORT/
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 2 changesets with 2 changes to 2 files
  $ hg up 'desc("c_C0")'
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg topic topic_A
  marked working directory as topic: topic_A
  $ mkcommit c_E0
  active topic 'topic_A' grew its first changeset
  (see 'hg help topics' for more information)
  $ hg push disabled
  pushing to http://localhost:$HGPORT2/
  searching for changes
  abort: push creates new remote head f31af349535e
  (merge or see 'hg help push' for details about pushing new heads)
  [20]
  $ hg push enabled
  pushing to http://localhost:$HGPORT/
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files (+1 heads)

  $ hg debugdownload http://localhost:$HGPORT/?cmd=branchmap | sort
  default 9c660cf97499ae01ccb6894880455c6ffa4b19cf
  default%3Atopic_A f31af349535e413b6023f11b51a6afccf4139180
  $ hg debugdownload http://localhost:$HGPORT2/?cmd=branchmap | sort
  default 9c660cf97499ae01ccb6894880455c6ffa4b19cf f31af349535e413b6023f11b51a6afccf4139180
  $ cat $TESTTMP/hg1.error
  $ cat $TESTTMP/hg2.error

Pushing new head to a topic
---------------------------

  $ hg up 'desc("c_D0")'
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg topic topic_A
  marked working directory as topic: topic_A
  $ mkcommit c_F0
  $ hg log -G
  @  changeset:   5:82c5842e0472
  |  tag:         tip
  |  topic:       topic_A
  |  parent:      3:9c660cf97499
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     c_F0
  |
  | o  changeset:   4:f31af349535e
  | |  topic:       topic_A
  | |  parent:      2:22c9514ed811
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     c_E0
  | |
  o |  changeset:   3:9c660cf97499
  |\|  parent:      2:22c9514ed811
  | |  parent:      1:0ab6d544d0ef
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     c_D0
  | |
  | o  changeset:   2:22c9514ed811
  | |  parent:      0:14faebcf9752
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     c_C0
  | |
  o |  changeset:   1:0ab6d544d0ef
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     c_B0
  |
  o  changeset:   0:14faebcf9752
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     c_A0
  
  $ hg push enabled
  pushing to http://localhost:$HGPORT/
  searching for changes
  abort: push creates new remote head 82c5842e0472 on branch 'default:topic_A'
  (merge or see 'hg help push' for details about pushing new heads)
  [20]
  $ hg push disabled
  pushing to http://localhost:$HGPORT2/
  searching for changes
  remote: adding changesets
  remote: adding manifests
  remote: adding file changes
  remote: added 1 changesets with 1 changes to 1 files

  $ hg debugdownload http://localhost:$HGPORT/?cmd=branchmap | sort
  default 9c660cf97499ae01ccb6894880455c6ffa4b19cf
  default%3Atopic_A f31af349535e413b6023f11b51a6afccf4139180 82c5842e047215160763f81ae93ae42c65b20a63
  $ hg debugdownload http://localhost:$HGPORT2/?cmd=branchmap | sort
  default f31af349535e413b6023f11b51a6afccf4139180 82c5842e047215160763f81ae93ae42c65b20a63
  $ cat $TESTTMP/hg1.error
  $ cat $TESTTMP/hg2.error