request = FactoryGirl.create(:info_request, :user => User.last)

mail = RequestMailer.fake_response(request, request.user, 'Plz clarify', nil, nil)
request.receive(mail, mail.encoded, true)


event = request.log_event("status_update",
                               { :user_id => request.user.id,
                                 :old_described_state => request.described_state,
                                 :described_state => 'waiting_clarification',
                                 })
request.set_described_state('waiting_clarification', request.user, '')


followup = FactoryGirl.create(:new_information_followup, :info_request => request)

event = request.reload.last_event_forming_initial_request

# Destroying the _actual_ initial outgoing message is fine now,
# because the last_event_forming_initial_request points at the
# clarifying followup.
outgoing = request.outgoing_messages.first
outgoing.destroy
request.reload.last_event_forming_initial_request == event
# => true

followup.destroy
request.reload.last_event_forming_initial_request
# => RuntimeError