tests/test-subrepo.t

posix: add extended support for OS X path folding

OS X does the following transformation on paths for comparisons:

a) 8-bit strings are decoded as UTF-8 to UTF-16
b) undecodable bytes are percent-escaped
c) accented characters are converted to NFD decomposed form, approximately
d) characters are converted to _lowercase_ using internal tables

Both (c) and (d) are done using internal tables that vary from release
to release and match Unicode specs to greater or lesser extent. We
approximate these functions using Python's internal Unicode data.

With this change, Mercurial will (in almost all cases) match OS X
folding and not report unknown file aliases for files in UTF-8 or
other encodings.

Let commit recurse into subrepos by default to match pre-2.0 behavior:

  $ echo "[ui]" >> $HGRCPATH
  $ echo "commitsubrepos = Yes" >> $HGRCPATH

  $ rm -rf sub
  $ mkdir sub
  $ cd sub
  $ hg init t
  $ cd t

first revision, no sub

  $ echo a > a
  $ hg ci -Am0
  adding a

add first sub

  $ echo s = s > .hgsub
  $ hg add .hgsub
  $ hg init s
  $ echo a > s/a

Issue2232: committing a subrepo without .hgsub

  $ hg ci -mbad s
  abort: can't commit subrepos without .hgsub
  [255]

  $ hg -R s ci -Ams0
  adding a
  $ hg sum
  parent: 0:f7b1eb17ad24 tip
   0
  branch: default
  commit: 1 added, 1 subrepos
  update: (current)
  $ hg ci -m1
  committing subrepository s

Revert can't (yet) revert subrepos:

  $ echo b > s/a
  $ hg revert s
  s: reverting subrepos is unsupported

Revert currently ignores subrepos by default

  $ hg revert -a
  $ hg revert -R s -a -C
  reverting s/a

Issue2022: update -C

  $ echo b > s/a
  $ hg sum
  parent: 1:7cf8cfea66e4 tip
   1
  branch: default
  commit: 1 subrepos
  update: (current)
  $ hg co -C 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg sum
  parent: 1:7cf8cfea66e4 tip
   1
  branch: default
  commit: (clean)
  update: (current)

commands that require a clean repo should respect subrepos

  $ echo b >> s/a
  $ hg backout tip
  abort: uncommitted changes in subrepo s
  [255]
  $ hg revert -C -R s s/a

add sub sub

  $ echo ss = ss > s/.hgsub
  $ hg init s/ss
  $ echo a > s/ss/a
  $ hg -R s add s/.hgsub
  $ hg -R s/ss add s/ss/a
  $ hg sum
  parent: 1:7cf8cfea66e4 tip
   1
  branch: default
  commit: 1 subrepos
  update: (current)
  $ hg ci -m2
  committing subrepository s
  committing subrepository s/ss
  $ hg sum
  parent: 2:df30734270ae tip
   2
  branch: default
  commit: (clean)
  update: (current)

bump sub rev (and check it is ignored by ui.commitsubrepos)

  $ echo b > s/a
  $ hg -R s ci -ms1
  $ hg --config ui.commitsubrepos=no ci -m3
  committing subrepository s

leave sub dirty (and check ui.commitsubrepos=no aborts the commit)

  $ echo c > s/a
  $ hg --config ui.commitsubrepos=no ci -m4
  abort: uncommitted changes in subrepo s
  (use --subrepos for recursive commit)
  [255]
  $ hg ci -m4
  committing subrepository s
  $ hg tip -R s
  changeset:   3:1c833a7a9e3a
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     4
  

check caching

  $ hg co 0
  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg debugsub

restore

  $ hg co
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg debugsub
  path s
   source   s
   revision 1c833a7a9e3a4445c711aaf0f012379cd0d4034e

new branch for merge tests

  $ hg co 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo t = t >> .hgsub
  $ hg init t
  $ echo t > t/t
  $ hg -R t add t
  adding t/t

5

  $ hg ci -m5 # add sub
  committing subrepository t
  created new head
  $ echo t2 > t/t

6

  $ hg st -R s
  $ hg ci -m6 # change sub
  committing subrepository t
  $ hg debugsub
  path s
   source   s
   revision e4ece1bf43360ddc8f6a96432201a37b7cd27ae4
  path t
   source   t
   revision 6747d179aa9a688023c4b0cad32e4c92bb7f34ad
  $ echo t3 > t/t

7

  $ hg ci -m7 # change sub again for conflict test
  committing subrepository t
  $ hg rm .hgsub

8

  $ hg ci -m8 # remove sub

merge tests

  $ hg co -C 3
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge 5 # test adding
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg debugsub
  path s
   source   s
   revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
  path t
   source   t
   revision 60ca1237c19474e7a3978b0dc1ca4e6f36d51382
  $ hg ci -m9
  created new head
  $ hg merge 6 --debug # test change
    searching for copies back to rev 2
  resolving manifests
   overwrite None partial False
   ancestor 1f14a2e2d3ec local f0d2028bf86d+ remote 1831e14459c4
   .hgsubstate: versions differ -> m
  updating: .hgsubstate 1/1 files (100.00%)
  subrepo merge f0d2028bf86d+ 1831e14459c4 1f14a2e2d3ec
    subrepo t: other changed, get t:6747d179aa9a688023c4b0cad32e4c92bb7f34ad:hg
  getting subrepo t
  resolving manifests
   overwrite True partial False
   ancestor 60ca1237c194+ local 60ca1237c194+ remote 6747d179aa9a
   t: remote is newer -> g
  updating: t 1/1 files (100.00%)
  getting t
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg debugsub
  path s
   source   s
   revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
  path t
   source   t
   revision 6747d179aa9a688023c4b0cad32e4c92bb7f34ad
  $ echo conflict > t/t
  $ hg ci -m10
  committing subrepository t
  $ HGMERGE=internal:merge hg merge --debug 7 # test conflict
    searching for copies back to rev 2
  resolving manifests
   overwrite None partial False
   ancestor 1831e14459c4 local e45c8b14af55+ remote f94576341bcf
   .hgsubstate: versions differ -> m
  updating: .hgsubstate 1/1 files (100.00%)
  subrepo merge e45c8b14af55+ f94576341bcf 1831e14459c4
    subrepo t: both sides changed, merge with t:7af322bc1198a32402fe903e0b7ebcfc5c9bf8f4:hg
  merging subrepo t
    searching for copies back to rev 2
  resolving manifests
   overwrite None partial False
   ancestor 6747d179aa9a local 20a0db6fbf6c+ remote 7af322bc1198
   t: versions differ -> m
  preserving t for resolve of t
  updating: t 1/1 files (100.00%)
  picked tool 'internal:merge' for t (binary False symlink False)
  merging t
  my t@20a0db6fbf6c+ other t@7af322bc1198 ancestor t@6747d179aa9a
  warning: conflicts during merge.
  merging t failed!
  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
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)

should conflict

  $ cat t/t
  <<<<<<< local
  conflict
  =======
  t3
  >>>>>>> other

clone

  $ cd ..
  $ hg clone t tc
  updating to branch default
  cloning subrepo s from $TESTTMP/sub/t/s
  cloning subrepo s/ss from $TESTTMP/sub/t/s/ss
  cloning subrepo t from $TESTTMP/sub/t/t
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd tc
  $ hg debugsub
  path s
   source   s
   revision fc627a69481fcbe5f1135069e8a3881c023e4cf5
  path t
   source   t
   revision 20a0db6fbf6c3d2836e6519a642ae929bfc67c0e

push

  $ echo bah > t/t
  $ hg ci -m11
  committing subrepository t
  $ hg push
  pushing to $TESTTMP/sub/t
  pushing subrepo s/ss to $TESTTMP/sub/t/s/ss
  searching for changes
  no changes found
  pushing subrepo s to $TESTTMP/sub/t/s
  searching for changes
  no changes found
  pushing subrepo t to $TESTTMP/sub/t/t
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files

push -f

  $ echo bah > s/a
  $ hg ci -m12
  committing subrepository s
  $ hg push
  pushing to $TESTTMP/sub/t
  pushing subrepo s/ss to $TESTTMP/sub/t/s/ss
  searching for changes
  no changes found
  pushing subrepo s to $TESTTMP/sub/t/s
  searching for changes
  abort: push creates new remote head 12a213df6fa9!
  (did you forget to merge? use push -f to force)
  [255]
  $ hg push -f
  pushing to $TESTTMP/sub/t
  pushing subrepo s/ss to $TESTTMP/sub/t/s/ss
  searching for changes
  no changes found
  pushing subrepo s to $TESTTMP/sub/t/s
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  pushing subrepo t to $TESTTMP/sub/t/t
  searching for changes
  no changes found
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files

update

  $ cd ../t
  $ hg up -C # discard our earlier merge
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo blah > t/t
  $ hg ci -m13
  committing subrepository t

pull

  $ cd ../tc
  $ hg pull
  pulling from $TESTTMP/sub/t
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)

should pull t

  $ hg up
  pulling subrepo t from $TESTTMP/sub/t/t
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat t/t
  blah

bogus subrepo path aborts

  $ echo 'bogus=[boguspath' >> .hgsub
  $ hg ci -m 'bogus subrepo path'
  abort: missing ] in subrepo source
  [255]

Issue1986: merge aborts when trying to merge a subrepo that
shouldn't need merging

# subrepo layout
#
#   o   5 br
#  /|
# o |   4 default
# | |
# | o   3 br
# |/|
# o |   2 default
# | |
# | o   1 br
# |/
# o     0 default

  $ cd ..
  $ rm -rf sub
  $ hg init main
  $ cd main
  $ hg init s
  $ cd s
  $ echo a > a
  $ hg ci -Am1
  adding a
  $ hg branch br
  marked working directory as branch br
  $ echo a >> a
  $ hg ci -m1
  $ hg up default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo b > b
  $ hg ci -Am1
  adding b
  $ hg up br
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m1
  $ hg up 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo c > c
  $ hg ci -Am1
  adding c
  $ hg up 3
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge 4
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m1

# main repo layout:
#
#   * <-- try to merge default into br again
# .`|
# . o   5 br      --> substate = 5
# . |
# o |   4 default --> substate = 4
# | |
# | o   3 br      --> substate = 2
# |/|
# o |   2 default --> substate = 2
# | |
# | o   1 br      --> substate = 3
# |/
# o     0 default --> substate = 2

  $ cd ..
  $ echo 's = s' > .hgsub
  $ hg -R s up 2
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg ci -Am1
  adding .hgsub
  committing subrepository s
  $ hg branch br
  marked working directory as branch br
  $ echo b > b
  $ hg -R s up 3
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg ci -Am1
  adding b
  committing subrepository s
  $ hg up default
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo c > c
  $ hg ci -Am1
  adding c
  $ hg up 1
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg merge 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m1
  $ hg up 2
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg -R s up 4
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo d > d
  $ hg ci -Am1
  adding d
  committing subrepository s
  $ hg up 3
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg -R s up 5
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo e > e
  $ hg ci -Am1
  adding e
  committing subrepository s

  $ hg up 5
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg merge 4    # try to merge default into br again
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ cd ..

test subrepo delete from .hgsubstate

  $ hg init testdelete
  $ mkdir testdelete/nested testdelete/nested2
  $ hg init testdelete/nested
  $ hg init testdelete/nested2
  $ echo test > testdelete/nested/foo
  $ echo test > testdelete/nested2/foo
  $ hg -R testdelete/nested add
  adding testdelete/nested/foo
  $ hg -R testdelete/nested2 add
  adding testdelete/nested2/foo
  $ hg -R testdelete/nested ci -m test
  $ hg -R testdelete/nested2 ci -m test
  $ echo nested = nested > testdelete/.hgsub
  $ echo nested2 = nested2 >> testdelete/.hgsub
  $ hg -R testdelete add
  adding testdelete/.hgsub
  $ hg -R testdelete ci -m "nested 1 & 2 added"
  committing subrepository nested
  committing subrepository nested2
  $ echo nested = nested > testdelete/.hgsub
  $ hg -R testdelete ci -m "nested 2 deleted"
  $ cat testdelete/.hgsubstate
  bdf5c9a3103743d900b12ae0db3ffdcfd7b0d878 nested
  $ hg -R testdelete remove testdelete/.hgsub
  $ hg -R testdelete ci -m ".hgsub deleted"
  $ cat testdelete/.hgsubstate
  bdf5c9a3103743d900b12ae0db3ffdcfd7b0d878 nested

test repository cloning

  $ mkdir mercurial mercurial2
  $ hg init nested_absolute
  $ echo test > nested_absolute/foo
  $ hg -R nested_absolute add
  adding nested_absolute/foo
  $ hg -R nested_absolute ci -mtest
  $ cd mercurial
  $ hg init nested_relative
  $ echo test2 > nested_relative/foo2
  $ hg -R nested_relative add
  adding nested_relative/foo2
  $ hg -R nested_relative ci -mtest2
  $ hg init main
  $ echo "nested_relative = ../nested_relative" > main/.hgsub
  $ echo "nested_absolute = `pwd`/nested_absolute" >> main/.hgsub
  $ hg -R main add
  adding main/.hgsub
  $ hg -R main ci -m "add subrepos"
  committing subrepository nested_absolute
  committing subrepository nested_relative
  $ cd ..
  $ hg clone mercurial/main mercurial2/main
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat mercurial2/main/nested_absolute/.hg/hgrc \
  >     mercurial2/main/nested_relative/.hg/hgrc
  [paths]
  default = $TESTTMP/sub/mercurial/nested_absolute
  [paths]
  default = $TESTTMP/sub/mercurial/nested_relative
  $ rm -rf mercurial mercurial2

Issue1977: multirepo push should fail if subrepo push fails

  $ hg init repo
  $ hg init repo/s
  $ echo a > repo/s/a
  $ hg -R repo/s ci -Am0
  adding a
  $ echo s = s > repo/.hgsub
  $ hg -R repo ci -Am1
  adding .hgsub
  committing subrepository s
  $ hg clone repo repo2
  updating to branch default
  cloning subrepo s from $TESTTMP/sub/repo/s
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg -q -R repo2 pull -u
  $ echo 1 > repo2/s/a
  $ hg -R repo2/s ci -m2
  $ hg -q -R repo2/s push
  $ hg -R repo2/s up -C 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo 2 > repo2/s/a
  $ hg -R repo2/s ci -m3
  created new head
  $ hg -R repo2 ci -m3
  committing subrepository s
  $ hg -q -R repo2 push
  abort: push creates new remote head 9d66565e64e1!
  (did you forget to merge? use push -f to force)
  [255]
  $ hg -R repo update
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ rm -rf repo2 repo


Issue1852 subrepos with relative paths always push/pull relative to default

Prepare a repo with subrepo

  $ hg init issue1852a
  $ cd issue1852a
  $ hg init sub/repo
  $ echo test > sub/repo/foo
  $ hg -R sub/repo add sub/repo/foo
  $ echo sub/repo = sub/repo > .hgsub
  $ hg add .hgsub
  $ hg ci -mtest
  committing subrepository sub/repo
  $ echo test >> sub/repo/foo
  $ hg ci -mtest
  committing subrepository sub/repo
  $ cd ..

Create repo without default path, pull top repo, and see what happens on update

  $ hg init issue1852b
  $ hg -R issue1852b pull issue1852a
  pulling from issue1852a
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 3 changes to 2 files
  (run 'hg update' to get a working copy)
  $ hg -R issue1852b update
  abort: default path for subrepository sub/repo not found
  [255]

Pull -u now doesn't help

  $ hg -R issue1852b pull -u issue1852a
  pulling from issue1852a
  searching for changes
  no changes found

Try the same, but with pull -u

  $ hg init issue1852c
  $ hg -R issue1852c pull -r0 -u issue1852a
  pulling from issue1852a
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 2 changes to 2 files
  cloning subrepo sub/repo from issue1852a/sub/repo
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

Try to push from the other side

  $ hg -R issue1852a push `pwd`/issue1852c
  pushing to $TESTTMP/sub/issue1852c
  pushing subrepo sub/repo to $TESTTMP/sub/issue1852c/sub/repo
  searching for changes
  no changes found
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files

Incoming and outgoing should not use the default path:

  $ hg clone -q issue1852a issue1852d
  $ hg -R issue1852d outgoing --subrepos issue1852c
  comparing with issue1852c
  searching for changes
  no changes found
  comparing with issue1852c/sub/repo
  searching for changes
  no changes found
  [1]
  $ hg -R issue1852d incoming --subrepos issue1852c
  comparing with issue1852c
  searching for changes
  no changes found
  comparing with issue1852c/sub/repo
  searching for changes
  no changes found
  [1]

Check status of files when none of them belong to the first
subrepository:

  $ hg init subrepo-status
  $ cd subrepo-status
  $ hg init subrepo-1
  $ hg init subrepo-2
  $ cd subrepo-2
  $ touch file
  $ hg add file
  $ cd ..
  $ echo subrepo-1 = subrepo-1 > .hgsub
  $ echo subrepo-2 = subrepo-2 >> .hgsub
  $ hg add .hgsub
  $ hg ci -m 'Added subrepos'
  committing subrepository subrepo-1
  committing subrepository subrepo-2
  $ hg st subrepo-2/file

Check hg update --clean
  $ cd $TESTTMP/sub/t
  $ rm -r t/t.orig
  $ hg status -S --all
  C .hgsub
  C .hgsubstate
  C a
  C s/.hgsub
  C s/.hgsubstate
  C s/a
  C s/ss/a
  C t/t
  $ echo c1 > s/a
  $ cd s
  $ echo c1 > b
  $ echo c1 > c
  $ hg add b
  $ cd ..
  $ hg status -S
  M s/a
  A s/b
  ? s/c
  $ hg update -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg status -S
  ? s/b
  ? s/c

Sticky subrepositories, no changes
  $ cd $TESTTMP/sub/t
  $ hg id
  925c17564ef8 tip
  $ hg -R s id
  12a213df6fa9 tip
  $ hg -R t id  
  52c0adc0515a tip
  $ hg update 11
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  365661e5936a
  $ hg -R s id
  fc627a69481f
  $ hg -R t id  
  e95bcfa18a35

Sticky subrepositorys, file changes
  $ touch s/f1
  $ touch t/f1
  $ hg add -S s/f1
  $ hg add -S t/f1
  $ hg id
  365661e5936a
  $ hg -R s id
  fc627a69481f+
  $ hg -R t id  
  e95bcfa18a35+
  $ hg update tip
   subrepository sources for s differ
  use (l)ocal source (fc627a69481f) or (r)emote source (12a213df6fa9)?
   l
   subrepository sources for t differ
  use (l)ocal source (e95bcfa18a35) or (r)emote source (52c0adc0515a)?
   l
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  925c17564ef8+ tip
  $ hg -R s id
  fc627a69481f+
  $ hg -R t id  
  e95bcfa18a35+
  $ hg update --clean tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

Sticky subrepository, revision updates
  $ hg id
  925c17564ef8 tip
  $ hg -R s id
  12a213df6fa9 tip
  $ hg -R t id  
  52c0adc0515a tip
  $ cd s
  $ hg update -r -2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ../t
  $ hg update -r 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ..
  $ hg update 10
   subrepository sources for t differ (in checked out version)
  use (l)ocal source (7af322bc1198) or (r)emote source (20a0db6fbf6c)?
   l
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  e45c8b14af55+
  $ hg -R s id
  1c833a7a9e3a
  $ hg -R t id  
  7af322bc1198

Sticky subrepository, file changes and revision updates
  $ touch s/f1
  $ touch t/f1
  $ hg add -S s/f1
  $ hg add -S t/f1
  $ hg id
  e45c8b14af55+
  $ hg -R s id
  1c833a7a9e3a+
  $ hg -R t id  
  7af322bc1198+
  $ hg update tip
   subrepository sources for s differ
  use (l)ocal source (1c833a7a9e3a) or (r)emote source (12a213df6fa9)?
   l
   subrepository sources for t differ
  use (l)ocal source (7af322bc1198) or (r)emote source (52c0adc0515a)?
   l
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  925c17564ef8 tip
  $ hg -R s id
  1c833a7a9e3a+
  $ hg -R t id  
  7af322bc1198+

Sticky repository, update --clean
  $ hg update --clean tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  925c17564ef8 tip
  $ hg -R s id
  12a213df6fa9 tip
  $ hg -R t id  
  52c0adc0515a tip

Test subrepo already at intended revision:
  $ cd s
  $ hg update fc627a69481f
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ..
  $ hg update 11
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id -n
  11+
  $ hg -R s id
  fc627a69481f
  $ hg -R t id 
  e95bcfa18a35

Test that removing .hgsubstate doesn't break anything:

  $ hg rm -f .hgsubstate
  $ hg ci -mrm
  committing subrepository s
  committing subrepository t
  created new head
  $ hg log -vr tip
  changeset:   14:3941e0aa5236
  tag:         tip
  parent:      11:365661e5936a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  description:
  rm
  
  

Test that removing .hgsub removes .hgsubstate:

  $ hg rm .hgsub
  $ hg ci -mrm2
  $ hg log -vr tip
  changeset:   15:8b31de9d13d1
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files:       .hgsub .hgsubstate
  description:
  rm2