view tests/test-hooklib-reject_merge_commits.t @ 51996:625cf9621551

tests: add a module that can perform the equivalent of `SIGKILL` on any OS

I started with this being Windows specific, but let's push all of the decision
making into this function so that it can just be called by the tests.  The
tradeoff is that this is very specific to sending `SIGKILL`- since
`signal.SIGKILL` doesn't exist on Windows, the desired signal can't be passed
from the caller.  Maybe there's a way, but let's wait until there's a need.

We don't use `killdaemons.py` unconditionally because it starts with a more
graceful `SIGTERM` on posix.

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > hooklib =
  > 
  > [phases]
  > publish = False
  > EOF
  $ hg init a
  $ hg --cwd a debugbuilddag '.:parent.:childa*parent/childa<parent@otherbranch./childa'
  $ hg --cwd a log -G
  o    changeset:   4:a9fb040caedd
  |\   branch:      otherbranch
  | |  tag:         tip
  | |  parent:      3:af739dfc49b4
  | |  parent:      1:66f7d451a68b
  | |  user:        debugbuilddag
  | |  date:        Thu Jan 01 00:00:04 1970 +0000
  | |  summary:     r4
  | |
  | o  changeset:   3:af739dfc49b4
  | |  branch:      otherbranch
  | |  parent:      0:1ea73414a91b
  | |  user:        debugbuilddag
  | |  date:        Thu Jan 01 00:00:03 1970 +0000
  | |  summary:     r3
  | |
  +---o  changeset:   2:a6b287721c3b
  | |/   parent:      0:1ea73414a91b
  | |    parent:      1:66f7d451a68b
  | |    user:        debugbuilddag
  | |    date:        Thu Jan 01 00:00:02 1970 +0000
  | |    summary:     r2
  | |
  o |  changeset:   1:66f7d451a68b
  |/   tag:         childa
  |    user:        debugbuilddag
  |    date:        Thu Jan 01 00:00:01 1970 +0000
  |    summary:     r1
  |
  o  changeset:   0:1ea73414a91b
     tag:         parent
     user:        debugbuilddag
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     r0
  
  $ hg init b
  $ cat <<EOF >> b/.hg/hgrc
  > [hooks]
  > pretxnchangegroup.reject_merge_commits = \
  >   python:hgext.hooklib.reject_merge_commits.hook
  > EOF
  $ hg --cwd b pull ../a -r a6b287721c3b
  pulling from ../a
  adding changesets
  adding manifests
  adding file changes
  error: pretxnchangegroup.reject_merge_commits hook failed: a6b287721c3b rejected as merge on the same branch. Please consider rebase.
  transaction abort!
  rollback completed
  abort: a6b287721c3b rejected as merge on the same branch. Please consider rebase.
  [255]
  $ hg --cwd b pull ../a -r 1ea73414a91b
  pulling from ../a
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files
  new changesets 1ea73414a91b (1 drafts)
  (run 'hg update' to get a working copy)
  $ hg --cwd b pull ../a -r a9fb040caedd
  pulling from ../a
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 0 changes to 0 files
  new changesets 66f7d451a68b:a9fb040caedd (3 drafts)
  (run 'hg update' to get a working copy)