'parent doc should list all docs for which it is parent
A child doc should list all its parent\'s docs, excluding itself, and
including its parent'

def test_other_translations(self):

    parent = document(locale=settings.WIKI_DEFAULT_LANGUAGE, title='test', save=True)
    enfant = document(locale='fr', title='le    test', parent=parent, save=True)
    bambino = document(locale='es', title='el    test', parent=parent, save=True)
    children = Document.objects.filter(parent=parent).order_by('locale').values_list('pk', flat=True)
    eq_(list(children), [trans.pk for trans in parent.other_translations])
    eq_(parent.pk, enfant.other_translations[0].pk)
    enfant_translation_pks = [trans.pk for trans in enfant.other_translations]
    ok_((bambino.pk in enfant_translation_pks))
    eq_(False, (enfant.pk in enfant_translation_pks))
