tests/test-lock-badness.t

wireproto: move wireproto capabilities computation in a subfunction

It will help people that need to add capabilities (in a more subtle was that
just adding some to the list) in multiple way:

1. This function returns a list, not a string. Making it easier to look at,
   extend or alter the content.

2. The original capabilities function will be store in the dictionary of wire
   protocol command. So extension that wrap this function also need to update
   the dictionary entry.

   Both wrapping and update of the dictionary entry are needed because the
   `hello` wire protocol use the function itself. This is specifically sneaky for
   extension writer as ssh use the `hello` command while http use the
   `capabilities` command.

   With this new `_capabilities` function there is one and only one obvious
   place to wrap when needed.

#if unix-permissions no-root no-windows

Prepare

  $ hg init a
  $ echo a > a/a
  $ hg -R a ci -A -m a
  adding a

  $ hg clone a b
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

One process waiting for another

  $ cat > hooks.py << EOF
  > import time
  > def sleepone(**x): time.sleep(1)
  > def sleephalf(**x): time.sleep(0.5)
  > EOF
  $ echo b > b/b
  $ hg -R b ci -A -m b --config hooks.precommit="python:`pwd`/hooks.py:sleepone" > stdout &
  $ hg -R b up -q --config hooks.pre-update="python:`pwd`/hooks.py:sleephalf"
  waiting for lock on working directory of b held by '*:*' (glob)
  got lock after ? seconds (glob)
  warning: ignoring unknown working parent d2ae7f538514!
  $ wait
  $ cat stdout
  adding b

Pushing to a local read-only repo that can't be locked

  $ chmod 100 a/.hg/store

  $ hg -R b push a
  pushing to a
  abort: could not lock repository a: Permission denied
  [255]

  $ chmod 700 a/.hg/store
#endif