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

Testing head checking code: Case D-4

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

Mercurial checks for the introduction of new heads on push. Evolution comes

into play to detect if existing branches on the server are being replaced by

some of the new one we push.

This case is part of a series of tests checking this behavior.

Category D: remote head is "obs-affected" locally, but result is not part of the push

TestCase 4: multi-changeset branch, split on multiple other, (base on its own new branch)

.. old-state:

..

.. * 2 branch (1 changeset, and 2 changesets)

..

.. new-state:

..

.. * 1 new branch superceeding the base of the old-2-changesets-branch,

.. * 1 new changesets on the old-1-changeset-branch superceeding the head of the other

..

.. expected-result:

..

.. * push the new branch only -> push denied (variant a)

.. * push the existing branch only -> push allowed (variant b)

.. (pushing all is tested as case A-7)

..

.. graph-summary:

..

.. (variant a)

..

.. B'○⇢ø B

..   | |

.. A | ø⇠◔ A'

..   | |/

.. C ● |

..    \|

..     ●

..

.. or (variant b)

..

.. B'◔⇢ø B

..   | |

.. A | ø⇠○ A'

..   | |/

.. C ● |

..    \|

..     ●

  $ . $TESTDIR/testlib/push-checkheads-util.sh

Test setup

----------

  $ mkdir D4

  $ cd D4

  $ setuprepos

  creating basic server and client repo

  updating to branch default

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

  $ cd server

  $ mkcommit B0

  $ hg up 0

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

  $ mkcommit C0

  created new head

  $ cd ../client

  $ hg pull

  pulling from $TESTTMP/D4/server (glob)

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 2 changesets with 2 changes to 2 files (+1 heads)

  (run 'hg heads' to see heads, 'hg merge' to merge)

  $ hg up 0

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

  $ mkcommit A1

  created new head

  $ hg up 'desc(C0)'

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

  $ mkcommit B1

  $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`

  $ hg debugobsolete `getid "desc(B0)" ` `getid "desc(B1)"`

  $ hg log -G --hidden

  @  d70a1f75a020 (draft): B1

  |

  | o  f6082bc4ffef (draft): A1

  | |

  o |  0f88766e02d6 (draft): C0

  |/

  | x  d73caddc5533 (draft): B0

  | |

  | x  8aaa48160adc (draft): A0

  |/

  o  1e4be0697311 (public): root

Actual testing (new branch only)

--------------------------------

  $ hg push --rev 'desc(A1)'

  pushing to $TESTTMP/D4/server (glob)

  searching for changes

  abort: push creates new remote head f6082bc4ffef!

  (merge or see 'hg help push' for details about pushing new heads)

  [255]

Actual testing (existing branch only)

------------------------------------

  $ hg push --rev 'desc(B1)'

  pushing to $TESTTMP/D4/server (glob)

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  1 new obsolescence markers

  $ cd ../..