view tests/test-sharing.t @ 1224:859a854cedc3

add a 'inhibit' extension

This extension will be used to reduce the scope of evolve in order to make some
of its features available to the mass earlier.

See extension documentation for details.

Test script based on sharing.rst: ensure that all scenarios in that
document work as advertised.

Setting things up

  $ cat >> $HGRCPATH <<EOF
  > [alias]
  > shortlog = log --template '{rev}:{node|short}  {phase}  {desc|firstline}\n'
  > [extensions]
  > rebase =
  > EOF
  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext/evolve.py" >> $HGRCPATH
  $ hg init public
  $ hg clone -q public test-repo
  $ hg clone -q test-repo dev-repo
  $ cat >> test-repo/.hg/hgrc <<EOF
  > [phases]
  > publish = false
  > EOF

To start things off, let's make one public, immutable changeset::

  $ cd test-repo
  $ echo 'my new project' > file1
  $ hg add file1
  $ hg commit -m'create new project'
  $ hg push -q

and pull that into the development repository::

  $ cd ../dev-repo
  $ hg pull -q -u

Let's commit a preliminary change and push it to ``test-repo`` for
testing. ::

  $ echo 'fix fix fix' > file1
  $ hg commit -m'prelim change'
  $ hg push -q ../test-repo

Figure SG01 (roughly)
  $ hg shortlog -G
  @  1:f6490818a721  draft  prelim change
  |
  o  0:0dc9c9f6ab91  public  create new project
  
Now let's switch to test-repo to test our change and amend::
  $ cd ../test-repo
  $ hg update -q
  $ echo 'Fix fix fix.' > file1
  $ hg amend -m'fix bug 37'

Figure SG02
  $ hg shortlog --hidden -G
  @  3:60ffde5765c5  draft  fix bug 37
  |
  | x  2:2a039763c0f4  draft  temporary amend commit for f6490818a721
  | |
  | x  1:f6490818a721  draft  prelim change
  |/
  o  0:0dc9c9f6ab91  public  create new project
  
Pull into dev-repo: obsolescence markers are transferred, but not
the new obsolete changeset.
  $ cd ../dev-repo
  $ hg pull -q -u

Figure SG03
  $ hg shortlog --hidden -G
  @  2:60ffde5765c5  draft  fix bug 37
  |
  | x  1:f6490818a721  draft  prelim change
  |/
  o  0:0dc9c9f6ab91  public  create new project
  
Amend again in dev-repo
  $ echo 'Fix, fix, and fix.' > file1
  $ hg amend
  $ hg push -q

Figure SG04 (dev-repo)
  $ hg shortlog --hidden -G
  @  4:de6151c48e1c  draft  fix bug 37
  |
  | x  3:ad19d3570adb  draft  temporary amend commit for 60ffde5765c5
  | |
  | x  2:60ffde5765c5  draft  fix bug 37
  |/
  | x  1:f6490818a721  draft  prelim change
  |/
  o  0:0dc9c9f6ab91  public  create new project
  
Figure SG04 (test-repo)
  $ cd ../test-repo
  $ hg update -q
  $ hg shortlog --hidden -G
  @  4:de6151c48e1c  draft  fix bug 37
  |
  | x  3:60ffde5765c5  draft  fix bug 37
  |/
  | x  2:2a039763c0f4  draft  temporary amend commit for f6490818a721
  | |
  | x  1:f6490818a721  draft  prelim change
  |/
  o  0:0dc9c9f6ab91  public  create new project
  
This bug fix is finished. We can push it to the public repository.
  $ hg push
  pushing to $TESTTMP/public (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  pushing 4 obsolescence markers (* bytes) (glob)
  4 obsolescence markers added

Figure SG05
  $ hg -R ../public shortlog -G
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  
Oops, still have draft changesets in dev-repo.
  $ cd ../dev-repo
  $ hg shortlog -r 'draft()'
  4:de6151c48e1c  draft  fix bug 37
  $ hg pull -q -u
  $ hg shortlog -r 'draft()'

Sharing by Alice and Bob to demonstrate bumped and divergent changesets.
First, setup repos for them.

  $ cd ..
  $ hg clone -q public alice
  $ hg clone -q public bob
  $ cat >> alice/.hg/hgrc <<EOF
  > [phases]
  > publish = false
  > EOF
  $ cp alice/.hg/hgrc bob/.hg/hgrc

Alice commits a bug fix.
  $ cd alice
  $ echo 'fix' > file2
  $ hg commit -q -A -u alice -m 'fix bug 15'

Bob pulls and amends Alice's fix.
  $ cd ../bob
  $ hg pull -q -u ../alice
  $ echo 'Fix.' > file2
  $ hg amend -q -A -u bob -m 'fix bug 15 (amended)'

Figure SG06: Bob's repository after amending Alice's fix.
(Nothing new here; we could have seen this in the user guide.
  $ hg --hidden shortlog -G
  @  4:fe884dfac355  draft  fix bug 15 (amended)
  |
  | x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
  | |
  | x  2:e011baf925da  draft  fix bug 15
  |/
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  

But in the meantime, Alice decides the fix is just fine and publishes it.
  $ cd ../alice
  $ hg push -q

Which means that Bob now has an formerly obsolete changeset that is
also public (2:6e83). As soon as he pulls its phase change, he's got
trouble: the successors of that formerly obsolete changeset are
bumped.

  $ cd ../bob
  $ hg --hidden shortlog -r 'obsolete()'
  2:e011baf925da  draft  fix bug 15
  3:0376cac226f8  draft  temporary amend commit for e011baf925da
  $ hg pull -q -u
  1 new bumped changesets
  $ hg --hidden shortlog -r 'obsolete()'
  3:0376cac226f8  draft  temporary amend commit for e011baf925da
  $ hg shortlog -r 'bumped()'
  4:fe884dfac355  draft  fix bug 15 (amended)

Figure SG07: Bob's repo with one bumped changeset (rev 4:c02d)
  $ hg --hidden shortlog -G
  @  4:fe884dfac355  draft  fix bug 15 (amended)
  |
  | x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
  | |
  | o  2:e011baf925da  public  fix bug 15
  |/
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  

Bob gets out of trouble by evolving the repository.
  $ hg evolve --all
  recreate:[4] fix bug 15 (amended)
  atop:[2] fix bug 15
  computing new diff
  committed as 227d860d9ad0
  working directory is now at 227d860d9ad0

Figure SG08
  $ hg --hidden shortlog -G
  @  5:227d860d9ad0  draft  bumped update to e011baf925da:
  |
  | x  4:fe884dfac355  draft  fix bug 15 (amended)
  | |
  +---x  3:0376cac226f8  draft  temporary amend commit for e011baf925da
  | |
  o |  2:e011baf925da  public  fix bug 15
  |/
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  

Throw away Bob's messy repo and start over.
  $ cd ..
  $ rm -rf bob
  $ cp -rp alice bob

Bob commits a pretty good fix that both he and Alice will amend,
leading to divergence.
  $ cd bob
  $ echo 'pretty good fix' >> file1
  $ hg commit -u bob -m 'fix bug 24 (v1)'

Alice pulls Bob's fix and improves it.
  $ cd ../alice
  $ hg pull -q -u ../bob
  $ echo 'better (alice)' >> file1
  $ hg amend -u alice -m 'fix bug 24 (v2 by alice)'

Likewise, Bob amends his own fix. Now we have an obsolete changeset
with two successors, although the successors are in different repos.
  $ cd ../bob
  $ echo 'better (bob)' >> file1
  $ hg amend -u bob -m 'fix bug 24 (v2 by bob)'

Bob pulls from Alice's repo and discovers the trouble: divergent changesets!
  $ hg pull -q -u ../alice
  not updating: not a linear update
  (merge or update --check to force update)
  2 new divergent changesets
  $ hg shortlog -r 'divergent()'
  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)

Figure SG09
  $ hg --hidden shortlog -G
  o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
  |
  | @  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
  |/
  | x  4:162612d3335b  draft  temporary amend commit for fe81d904ed08
  | |
  | x  3:fe81d904ed08  draft  fix bug 24 (v1)
  |/
  o  2:e011baf925da  public  fix bug 15
  |
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  
Merge the trouble away.
  $ hg merge --tool internal:local
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg commit -m merge
  $ hg shortlog -G
  @    7:b1d30ba26e44  draft  merge
  |\
  | o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
  | |
  o |  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
  |/
  o  2:e011baf925da  public  fix bug 15
  |
  o  1:de6151c48e1c  public  fix bug 37
  |
  o  0:0dc9c9f6ab91  public  create new project
  
  $ hg log -q -r 'divergent()'
  5:fc16901f4d7a
  6:694fd0f6b503

# XXX hg evolve does not solve this trouble! bug in evolve?
#Evolve the trouble away.
#  $ hg evolve --all --tool=internal:local
#  merge:[5] fix bug 24 (v2 by bob)
#  with: [6] fix bug 24 (v2 by alice)
#  base: [3] fix bug 24 (v1)
#  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
#  $ hg status
#  $ hg shortlog -G
#  o  6:694fd0f6b503  draft  fix bug 24 (v2 by alice)
#  |
#  | @  5:fc16901f4d7a  draft  fix bug 24 (v2 by bob)
#  |/
#  o  2:e011baf925da  public  fix bug 15
#  |
#  o  1:de6151c48e1c  public  fix bug 37
#  |
#  o  0:0dc9c9f6ab91  public  create new project
#  
#  $ hg --hidden shortlog -G