$ cp "$TESTDIR"/printenv.py .

# commit hooks can see env vars

  $ hg init a

  $ cd a

  $ echo "[hooks]" > .hg/hgrc

  $ echo 'commit = unset HG_LOCAL HG_TAG; python ../printenv.py commit' >> .hg/hgrc

  $ echo 'commit.b = unset HG_LOCAL HG_TAG; python ../printenv.py commit.b' >> .hg/hgrc

  $ echo 'precommit = unset HG_LOCAL HG_NODE HG_TAG; python ../printenv.py precommit' >> .hg/hgrc

  $ echo 'pretxncommit = unset HG_LOCAL HG_TAG; python ../printenv.py pretxncommit' >> .hg/hgrc

  $ echo 'pretxncommit.tip = hg -q tip' >> .hg/hgrc

  $ echo 'pre-identify = python ../printenv.py pre-identify 1' >> .hg/hgrc

  $ echo 'pre-cat = python ../printenv.py pre-cat' >> .hg/hgrc

  $ echo 'post-cat = python ../printenv.py post-cat' >> .hg/hgrc

  $ echo a > a

  $ hg add a

  precommit hook: HG_PARENT1=0000000000000000000000000000000000000000 

  $ hg clone . ../b

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cd ../b

# changegroup hooks can see env vars

  $ echo '[hooks]' > .hg/hgrc

  $ echo 'prechangegroup = python ../printenv.py prechangegroup' >> .hg/hgrc

  $ echo 'changegroup = python ../printenv.py changegroup' >> .hg/hgrc

  $ echo 'incoming = python ../printenv.py incoming' >> .hg/hgrc

# pretxncommit and commit hooks can see both parents of merge

  $ cd ../a

  $ echo b >> a

  $ hg commit -m a1 -d "1 0"

  $ hg update -C 0

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo b > b

  $ hg add b

  $ hg commit -m b -d '1 0'

  created new head

  $ hg merge 1

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  (branch merge, don't forget to commit)

  $ hg commit -m merge -d '2 0'

# test generic hooks

  $ hg id

  pre-identify hook: HG_ARGS=id HG_OPTS={'tags': None, 'rev': '', 'num': None, 'branch': None, 'id': None} HG_PATS=[] 

  warning: pre-identify hook exited with status 1

  $ hg cat b

  pre-cat hook: HG_ARGS=cat b HG_OPTS={'rev': '', 'decode': None, 'exclude': [], 'output': '', 'include': []} HG_PATS=['b'] 

  post-cat hook: HG_ARGS=cat b HG_OPTS={'rev': '', 'decode': None, 'exclude': [], 'output': '', 'include': []} HG_PATS=['b'] HG_RESULT=0 

  b

  $ cd ../b

  $ hg pull ../a

  prechangegroup hook: HG_SOURCE=pull HG_URL=file: 

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 3 changesets with 2 changes to 2 files

  (run 'hg update' to get a working copy)

# tag hooks can see env vars

  $ cd ../a

  $ echo 'pretag = python ../printenv.py pretag' >> .hg/hgrc

  $ echo 'tag = unset HG_PARENT1 HG_PARENT2; python ../printenv.py tag' >> .hg/hgrc

  $ hg tag -d '3 0' a

  $ hg tag -l la

# pretag hook can forbid tagging

  $ echo 'pretag.forbid = python ../printenv.py pretag.forbid 1' >> .hg/hgrc

  $ hg tag -d '4 0' fa

  abort: pretag.forbid hook exited with status 1

  $ hg tag -l fla

  abort: pretag.forbid hook exited with status 1

# pretxncommit hook can see changeset, can roll back txn, changeset

# no more there after

  $ echo 'pretxncommit.forbid0 = hg tip -q' >> .hg/hgrc

  $ echo 'pretxncommit.forbid1 = python ../printenv.py pretxncommit.forbid 1' >> .hg/hgrc

  $ echo z > z

  $ hg add z

  $ hg -q tip

  $ hg commit -m 'fail' -d '4 0'

  transaction abort!

  rollback completed

  abort: pretxncommit.forbid1 hook exited with status 1

  $ hg -q tip

# precommit hook can prevent commit

  $ echo 'precommit.forbid = python ../printenv.py precommit.forbid 1' >> .hg/hgrc

  $ hg commit -m 'fail' -d '4 0'

  abort: precommit.forbid hook exited with status 1

  $ hg -q tip

# preupdate hook can prevent update

  $ echo 'preupdate = python ../printenv.py preupdate' >> .hg/hgrc

  $ hg update 1

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

# update hook

  $ echo 'update = python ../printenv.py update' >> .hg/hgrc

  $ hg update

  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

# prechangegroup hook can prevent incoming changes

  $ cd ../b

  $ hg -q tip

  $ echo '[hooks]' > .hg/hgrc

  $ echo 'prechangegroup.forbid = python ../printenv.py prechangegroup.forbid 1' >> .hg/hgrc

  $ hg pull ../a

  prechangegroup.forbid hook: HG_SOURCE=pull HG_URL=file: 

  pulling from ../a

  searching for changes

  abort: prechangegroup.forbid hook exited with status 1

# pretxnchangegroup hook can see incoming changes, can roll back txn,

# incoming changes no longer there after

  $ echo '[hooks]' > .hg/hgrc

  $ echo 'pretxnchangegroup.forbid0 = hg tip -q' >> .hg/hgrc

  $ echo 'pretxnchangegroup.forbid1 = python ../printenv.py pretxnchangegroup.forbid 1' >> .hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  transaction abort!

  rollback completed

  abort: pretxnchangegroup.forbid1 hook exited with status 1

  $ hg -q tip

# outgoing hooks can see env vars

  $ rm .hg/hgrc

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing = python ../printenv.py preoutgoing' >> ../a/.hg/hgrc

  $ echo 'outgoing = python ../printenv.py outgoing' >> ../a/.hg/hgrc

  $ hg pull ../a

  preoutgoing hook: HG_SOURCE=pull 

  pulling from ../a

  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)

  $ hg rollback

  rolling back to revision 3 (undo pull)

# preoutgoing hook can prevent outgoing changes

  $ echo 'preoutgoing.forbid = python ../printenv.py preoutgoing.forbid 1' >> ../a/.hg/hgrc

  $ hg pull ../a

  preoutgoing hook: HG_SOURCE=pull 

  preoutgoing.forbid hook: HG_SOURCE=pull 

  pulling from ../a

  searching for changes

  abort: preoutgoing.forbid hook exited with status 1

# outgoing hooks work for local clones

  $ cd ..

  $ echo '[hooks]' > a/.hg/hgrc

  $ echo 'preoutgoing = python ../printenv.py preoutgoing' >> a/.hg/hgrc

  $ echo 'outgoing = python ../printenv.py outgoing' >> a/.hg/hgrc

  $ hg clone a c

  preoutgoing hook: HG_SOURCE=clone 

  outgoing hook: HG_NODE=0000000000000000000000000000000000000000 HG_SOURCE=clone 

  updating to branch default

  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ rm -rf c

# preoutgoing hook can prevent outgoing changes for local clones

  $ echo 'preoutgoing.forbid = python ../printenv.py preoutgoing.forbid 1' >> a/.hg/hgrc

  $ hg clone a zzz

  preoutgoing hook: HG_SOURCE=clone 

  preoutgoing.forbid hook: HG_SOURCE=clone 

  abort: preoutgoing.forbid hook exited with status 1

  $ cd b

  $ cat > hooktests.py <<EOF

  > from mercurial import util

  > 

  > uncallable = 0

  > 

  > def printargs(args):

  >     args.pop('ui', None)

  >     args.pop('repo', None)

  >     a = list(args.items())

  >     a.sort()

  >     print 'hook args:'

  >     for k, v in a:

  >        print ' ', k, v

  > 

  > def passhook(**args):

  >     printargs(args)

  > 

  > def failhook(**args):

  >     printargs(args)

  >     return True

  > 

  > class LocalException(Exception):

  >     pass

  > 

  > def raisehook(**args):

  >     raise LocalException('exception from hook')

  > 

  > def aborthook(**args):

  >     raise util.Abort('raise abort from hook')

  > 

  > def brokenhook(**args):

  >     return 1 + {}

  > 

  > class container:

  >     unreachable = 1

  > EOF

# test python hooks

  $ PYTHONPATH="`pwd`:$PYTHONPATH"

  $ export PYTHONPATH

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.broken = python:hooktests.brokenhook' >> ../a/.hg/hgrc

  $ hg pull ../a 2>&1 | grep 'raised an exception'

  error: preoutgoing.broken hook raised an exception: unsupported operand type(s) for +: 'int' and 'dict'

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.raise = python:hooktests.raisehook' >> ../a/.hg/hgrc

  $ hg pull ../a 2>&1 | grep 'raised an exception'

  error: preoutgoing.raise hook raised an exception: exception from hook

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.abort = python:hooktests.aborthook' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  error: preoutgoing.abort hook failed: raise abort from hook

  abort: raise abort from hook

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.fail = python:hooktests.failhook' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  hook args:

    hooktype preoutgoing

    source pull

  abort: preoutgoing.fail hook failed

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.uncallable = python:hooktests.uncallable' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  abort: preoutgoing.uncallable hook is invalid ("hooktests.uncallable" is not callable)

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.nohook = python:hooktests.nohook' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  abort: preoutgoing.nohook hook is invalid ("hooktests.nohook" is not defined)

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.nomodule = python:nomodule' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  abort: preoutgoing.nomodule hook is invalid ("nomodule" not in a module)

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.badmodule = python:nomodule.nowhere' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  abort: preoutgoing.badmodule hook is invalid (import of "nomodule" failed)

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.unreachable = python:hooktests.container.unreachable' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  abort: preoutgoing.unreachable hook is invalid (import of "hooktests.container" failed)

  $ echo '[hooks]' > ../a/.hg/hgrc

  $ echo 'preoutgoing.pass = python:hooktests.passhook' >> ../a/.hg/hgrc

  $ hg pull ../a

  pulling from ../a

  searching for changes

  hook args:

    hooktype preoutgoing

    source pull

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  (run 'hg update' to get a working copy)

# make sure --traceback works

  $ echo '[hooks]' > .hg/hgrc

  $ echo 'commit.abort = python:hooktests.aborthook' >> .hg/hgrc

  $ echo aa > a

  $ hg --traceback commit -d '0 0' -ma 2>&1 | grep '^Traceback'

  Traceback (most recent call last):

  $ cd ..

  $ hg init c

  $ cd c

  $ cat > hookext.py <<EOF

  > def autohook(**args):

  >     print "Automatically installed hook"

  > 

  > def reposetup(ui, repo):

  >     repo.ui.setconfig("hooks", "commit.auto", autohook)

  > EOF

  $ echo '[extensions]' >> .hg/hgrc

  $ echo 'hookext = hookext.py' >> .hg/hgrc

  $ touch foo

  $ hg add foo

  $ hg ci -d '0 0' -m 'add foo'

  Automatically installed hook

  $ echo >> foo

  $ hg ci --debug -d '0 0' -m 'change foo'

  foo

  calling hook commit.auto: <function autohook at .*>

  Automatically installed hook

  committed changeset 1:52998019f6252a2b893452765fcb0a47351a5708