view tests/test-share.t @ 38486:4c0683655599

namespaces: let namespaces override singlenode() definition

Some namespaces have multiple nodes per name (meaning that their
namemap() returns multiple nodes). One such namespace is the "topics"
namespace (from the evolve repo). We also have our own internal
namespace at Google (for review units) that has multiple nodes per
name. These namespaces may not want to use the default "pick highest
revnum" resolution that we currently use when resolving a name to a
single node. As an example, they may decide that `hg co <name>` should
check out a commit that's last in some sense even if an earlier commit
had just been amended and thus had a higher revnum [1]. This patch
gives the namespace the option to continue to return multiple nodes
and to override how the best node is picked. Allowing namespaces to
override that may also be useful as an optimization (it may be cheaper
for the namespace to find just that node).

I have been arguing (in D3715) for using all the nodes returned from
namemap() when resolving the symbol to a revset, so e.g. `hg log -r
stable` would resolve to *all* nodes on stable, not just the one with
the highest revnum (except that I don't actually think we should
change it for the branch namespace because of BC). Most people seem
opposed to that. If we decide not to do it, I think we can deprecate
the namemap() function in favor of the new singlenode() (I find it
weird to have namespaces, like the branch namespace, where namemap()
isn't nodemap()'s inverse). I therefore think this patch makes sense
regardless of what we decide on that issue.


 [1] Actually, even the branch namespace would have wanted to override
     singlenode() if it had supported multiple nodes. That's because
     closes branch heads are mostly ignored, so "hg co default" will
     not check out the highest-revnum node if that's a closed head.

Differential Revision: https://phab.mercurial-scm.org/D3852

  $ echo "[extensions]"      >> $HGRCPATH
  $ echo "share = "          >> $HGRCPATH

prepare repo1

  $ hg init repo1
  $ cd repo1
  $ echo a > a
  $ hg commit -A -m'init'
  adding a

share it

  $ cd ..
  $ hg share repo1 repo2
  updating working directory
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

share shouldn't have a store dir

  $ cd repo2
  $ test -d .hg/store
  [1]

share shouldn't have a cache dir, original repo should

  $ hg branches
  default                        0:d3873e73d99e
  $ hg tags
  tip                                0:d3873e73d99e
  $ test -d .hg/cache
  [1]
  $ ls -1 ../repo1/.hg/cache
  branch2-served
  rbc-names-v1
  rbc-revs-v1
  tags2-visible

Some sed versions appends newline, some don't, and some just fails

  $ cat .hg/sharedpath; echo
  $TESTTMP/repo1/.hg

trailing newline on .hg/sharedpath is ok
  $ hg tip -q
  0:d3873e73d99e
  $ echo '' >> .hg/sharedpath
  $ cat .hg/sharedpath
  $TESTTMP/repo1/.hg
  $ hg tip -q
  0:d3873e73d99e

commit in shared clone

  $ echo a >> a
  $ hg commit -m'change in shared clone'

check original

  $ cd ../repo1
  $ hg log
  changeset:   1:8af4dc49db9e
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     change in shared clone
  
  changeset:   0:d3873e73d99e
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     init
  
  $ hg update
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat a             # should be two lines of "a"
  a
  a

commit in original

  $ echo b > b
  $ hg commit -A -m'another file'
  adding b

check in shared clone

  $ cd ../repo2
  $ hg log
  changeset:   2:c2e0ac586386
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     another file
  
  changeset:   1:8af4dc49db9e
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     change in shared clone
  
  changeset:   0:d3873e73d99e
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     init
  
  $ hg update
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat b             # should exist with one "b"
  b

hg serve shared clone

  $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid
  $ cat hg.pid >> $DAEMON_PIDS
  $ get-with-headers.py localhost:$HGPORT 'raw-file/'
  200 Script output follows
  
  
  -rw-r--r-- 4 a
  -rw-r--r-- 2 b
  
  

test unshare command

  $ hg unshare
  $ test -d .hg/store
  $ test -f .hg/sharedpath
  [1]
  $ grep shared .hg/requires
  [1]
  $ hg unshare
  abort: this is not a shared repo
  [255]

check that a change does not propagate

  $ echo b >> b
  $ hg commit -m'change in unshared'
  $ cd ../repo1
  $ hg id -r tip
  c2e0ac586386 tip

  $ cd ..


test sharing bookmarks

  $ hg share -B repo1 repo3
  updating working directory
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo1
  $ hg bookmark bm1
  $ hg bookmarks
   * bm1                       2:c2e0ac586386
  $ cd ../repo2
  $ hg book bm2
  $ hg bookmarks
   * bm2                       3:0e6e70d1d5f1
  $ cd ../repo3
  $ hg bookmarks
     bm1                       2:c2e0ac586386
  $ hg book bm3
  $ hg bookmarks
     bm1                       2:c2e0ac586386
   * bm3                       2:c2e0ac586386
  $ cd ../repo1
  $ hg bookmarks
   * bm1                       2:c2e0ac586386
     bm3                       2:c2e0ac586386

check whether HG_PENDING makes pending changes only in relatd
repositories visible to an external hook.

In "hg share" case, another transaction can't run in other
repositories sharing same source repository, because starting
transaction requires locking store of source repository.

Therefore, this test scenario ignores checking visibility of
.hg/bookmakrs.pending in repo2, which shares repo1 without bookmarks.

  $ cat > $TESTTMP/checkbookmarks.sh <<EOF
  > echo "@repo1"
  > hg -R "$TESTTMP/repo1" bookmarks
  > echo "@repo2"
  > hg -R "$TESTTMP/repo2" bookmarks
  > echo "@repo3"
  > hg -R "$TESTTMP/repo3" bookmarks
  > exit 1 # to avoid adding new bookmark for subsequent tests
  > EOF

  $ cd ../repo1
  $ hg --config hooks.pretxnclose="sh $TESTTMP/checkbookmarks.sh" -q book bmX
  @repo1
     bm1                       2:c2e0ac586386
     bm3                       2:c2e0ac586386
   * bmX                       2:c2e0ac586386
  @repo2
   * bm2                       3:0e6e70d1d5f1
  @repo3
     bm1                       2:c2e0ac586386
   * bm3                       2:c2e0ac586386
     bmX                       2:c2e0ac586386
  transaction abort!
  rollback completed
  abort: pretxnclose hook exited with status 1
  [255]
  $ hg book bm1

FYI, in contrast to above test, bmX is invisible in repo1 (= shared
src), because (1) HG_PENDING refers only repo3 and (2)
"bookmarks.pending" is written only into repo3.

  $ cd ../repo3
  $ hg --config hooks.pretxnclose="sh $TESTTMP/checkbookmarks.sh" -q book bmX
  @repo1
   * bm1                       2:c2e0ac586386
     bm3                       2:c2e0ac586386
  @repo2
   * bm2                       3:0e6e70d1d5f1
  @repo3
     bm1                       2:c2e0ac586386
     bm3                       2:c2e0ac586386
   * bmX                       2:c2e0ac586386
  transaction abort!
  rollback completed
  abort: pretxnclose hook exited with status 1
  [255]
  $ hg book bm3

  $ cd ../repo1

test that commits work

  $ echo 'shared bookmarks' > a
  $ hg commit -m 'testing shared bookmarks'
  $ hg bookmarks
   * bm1                       3:b87954705719
     bm3                       2:c2e0ac586386
  $ cd ../repo3
  $ hg bookmarks
     bm1                       3:b87954705719
   * bm3                       2:c2e0ac586386
  $ echo 'more shared bookmarks' > a
  $ hg commit -m 'testing shared bookmarks'
  created new head
  $ hg bookmarks
     bm1                       3:b87954705719
   * bm3                       4:62f4ded848e4
  $ cd ../repo1
  $ hg bookmarks
   * bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
  $ cd ..

non largefiles repos won't enable largefiles

  $ hg share --config extensions.largefiles= repo3 sharedrepo
  The fsmonitor extension is incompatible with the largefiles extension and has been disabled. (fsmonitor !)
  The fsmonitor extension is incompatible with the largefiles extension and has been disabled. (fsmonitor !)
  updating working directory
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ [ -f sharedrepo/.hg/hgrc ]
  [1]

test pushing bookmarks works

  $ hg clone repo3 repo4
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo4
  $ hg boo bm4
  $ echo foo > b
  $ hg commit -m 'foo in b'
  $ hg boo
     bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
   * bm4                       5:92793bfc8cad
  $ hg push -B bm4
  pushing to $TESTTMP/repo3
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  exporting bookmark bm4
  $ cd ../repo1
  $ hg bookmarks
   * bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ cd ../repo3
  $ hg bookmarks
     bm1                       3:b87954705719
   * bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ cd ..

test behavior when sharing a shared repo

  $ hg share -B repo3 repo5
  updating working directory
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo5
  $ hg book
     bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ cd ..

test what happens when an active bookmark is deleted

  $ cd repo1
  $ hg boo -d bm3
  $ hg boo
   * bm1                       3:b87954705719
     bm4                       5:92793bfc8cad
  $ cd ../repo3
  $ hg boo
     bm1                       3:b87954705719
     bm4                       5:92793bfc8cad
  $ cd ..

verify that bookmarks are not written on failed transaction

  $ cat > failpullbookmarks.py << EOF
  > """A small extension that makes bookmark pulls fail, for testing"""
  > from __future__ import absolute_import
  > from mercurial import (
  >   error,
  >   exchange,
  >   extensions,
  > )
  > def _pullbookmarks(orig, pullop):
  >     orig(pullop)
  >     raise error.HookAbort('forced failure by extension')
  > def extsetup(ui):
  >     extensions.wrapfunction(exchange, '_pullbookmarks', _pullbookmarks)
  > EOF
  $ cd repo4
  $ hg boo
     bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
   * bm4                       5:92793bfc8cad
  $ cd ../repo3
  $ hg boo
     bm1                       3:b87954705719
     bm4                       5:92793bfc8cad
  $ hg --config "extensions.failpullbookmarks=$TESTTMP/failpullbookmarks.py" pull $TESTTMP/repo4
  pulling from $TESTTMP/repo4
  searching for changes
  no changes found
  adding remote bookmark bm3
  abort: forced failure by extension
  [255]
  $ hg boo
     bm1                       3:b87954705719
     bm4                       5:92793bfc8cad
  $ hg pull $TESTTMP/repo4
  pulling from $TESTTMP/repo4
  searching for changes
  no changes found
  adding remote bookmark bm3
  1 local changesets published
  $ hg boo
     bm1                       3:b87954705719
   * bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ cd ..

verify bookmark behavior after unshare

  $ cd repo3
  $ hg unshare
  $ hg boo
     bm1                       3:b87954705719
   * bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ hg boo -d bm4
  $ hg boo bm5
  $ hg boo
     bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
   * bm5                       4:62f4ded848e4
  $ cd ../repo1
  $ hg boo
   * bm1                       3:b87954705719
     bm3                       4:62f4ded848e4
     bm4                       5:92793bfc8cad
  $ cd ..

test shared clones using relative paths work

  $ mkdir thisdir
  $ hg init thisdir/orig
  $ hg share -U thisdir/orig thisdir/abs
  $ hg share -U --relative thisdir/abs thisdir/rel
  $ cat thisdir/rel/.hg/sharedpath
  ../../orig/.hg (no-eol)
  $ grep shared thisdir/*/.hg/requires
  thisdir/abs/.hg/requires:shared
  thisdir/rel/.hg/requires:shared
  thisdir/rel/.hg/requires:relshared

test that relative shared paths aren't relative to $PWD

  $ cd thisdir
  $ hg -R rel root
  $TESTTMP/thisdir/rel
  $ cd ..

now test that relative paths really are relative, survive across
renames and changes of PWD

  $ hg -R thisdir/abs root
  $TESTTMP/thisdir/abs
  $ hg -R thisdir/rel root
  $TESTTMP/thisdir/rel
  $ mv thisdir thatdir
  $ hg -R thatdir/abs root
  abort: .hg/sharedpath points to nonexistent directory $TESTTMP/thisdir/orig/.hg!
  [255]
  $ hg -R thatdir/rel root
  $TESTTMP/thatdir/rel

test unshare relshared repo

  $ cd thatdir/rel
  $ hg unshare
  $ test -d .hg/store
  $ test -f .hg/sharedpath
  [1]
  $ grep shared .hg/requires
  [1]
  $ hg unshare
  abort: this is not a shared repo
  [255]
  $ cd ../..

  $ rm -r thatdir

Explicitly kill daemons to let the test exit on Windows

  $ killdaemons.py