Check that obsolete properly strip heads

  $ cat > obs.py << EOF

  > import mercurial.obsolete

  > mercurial.obsolete._enabled = True

  > EOF

  $ cat >> $HGRCPATH << EOF

  > [phases]

  > # public changeset are not obsolete

  > publish=false

  > [ui]

  > logtemplate='{node|short} ({phase}) {desc|firstline}\n'

  > [extensions]

  > graphlog=

  > EOF

  $ echo "obs=${TESTTMP}/obs.py" >> $HGRCPATH

  $ mkcommit() {

  >    echo "$1" > "$1"

  >    hg add "$1"

  >    hg ci -m "add $1"

  > }

  $ getid() {

  >    hg id --debug -ir "desc('$1')"

  > }

  $ hg init remote

  $ cd remote

  $ mkcommit base

  $ hg phase --public .

  $ cd ..

  $ cp -r remote base

  $ hg clone remote local

  updating to branch default

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

  $ cd local

New head replaces old head

==========================

setup

  $ mkcommit old

  $ hg push

  pushing to $TESTTMP/remote

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  $ hg up -q '.^'

  $ mkcommit new

  created new head

  $ hg debugobsolete `getid old` `getid new`

  $ hg glog --hidden

  @  71e3228bffe1 (draft) add new

  |

  | x  c70b08862e08 (draft) add old

  |/

  o  b4952fcf48cf (public) add base

  $ cp -r ../remote ../backup1

old exists remotely as draft. It is obsoleted by new that we now push.

Push should not warn about creating new head

  $ hg push

  pushing to $TESTTMP/remote

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files (+1 heads)

old head is obsolete but replacement in not pushed

==================================================

setup

  $ rm -fr ../remote

  $ cp -r ../backup1 ../remote

  $ hg up -q '.^'

  $ mkcommit other

  created new head

  $ hg glog --hidden

  @  d7d41ccbd4de (draft) add other

  |

  | o  71e3228bffe1 (draft) add new

  |/

  | x  c70b08862e08 (draft) add old

  |/

  o  b4952fcf48cf (public) add base

old exists remotely as draft. It is obsoleted by new but we don't push new.

Push should abort on new head

  $ hg push -r 'desc("other")'

  pushing to $TESTTMP/remote

  searching for changes

  abort: push creates new remote head d7d41ccbd4de!

  (did you forget to merge? use push -f to force)

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