tests/test-schemes.t

discovery: fix docstring of `outgoing` class

Also, introduce a more correct name `ancestorsof` for what was named
`missingheads` before. For now, we just forward `ancestorsof` to `missingheads`
until all users are changed.

There were some mistakes in the old docstring / name:

* `missingheads` (new name: `ancestorsof`) contains the revs whose ancestors
  are included in the outgoing operation. It may contain non-head revs and revs
  which are already on the remote, so the name "missingheads" is wrong in two
  ways.
* `missing` contains only ancestors of `missingheads`, so not *all nodes*
  present in local but not in remote.
* `common` might not contain all common revs, e.g. not some that are not an
  ancestor of `missingheads`.

It seems like the misleading name have fostered an actual bug (issue6372),
where `outgoing.missingheads` was used assuming that it contains the heads of
the missing changesets.

#require serve

  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > schemes=
  > 
  > [schemes]
  > l = http://localhost:$HGPORT/
  > parts = http://{1}:$HGPORT/
  > z = file:\$PWD/
  > EOF
  $ hg init test
  $ cd test
  $ echo a > a
  $ hg ci -Am initial
  adding a

invalid scheme

  $ hg log -R z:z
  abort: no '://' in scheme url 'z:z'
  [255]

http scheme

  $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
  $ cat hg.pid >> $DAEMON_PIDS
  $ hg incoming l://
  comparing with l://
  searching for changes
  no changes found
  [1]

check that {1} syntax works

  $ hg incoming --debug parts://localhost
  using http://localhost:$HGPORT/
  sending capabilities command
  comparing with parts://localhost/
  query 1; heads
  sending batch command
  searching for changes
  all remote heads known locally
  no changes found
  (sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)
  [1]

check that paths are expanded

  $ PWD=`pwd` hg incoming z://
  comparing with z://
  searching for changes
  no changes found
  [1]

check that debugexpandscheme outputs the canonical form

  $ hg debugexpandscheme bb://user/repo
  https://bitbucket.org/user/repo

expanding an unknown scheme emits the input

  $ hg debugexpandscheme foobar://this/that
  foobar://this/that

expanding a canonical URL emits the input

  $ hg debugexpandscheme https://bitbucket.org/user/repo
  https://bitbucket.org/user/repo

errors

  $ cat errors.log

  $ cd ..