Integrations tests without cookies

Hi

I wonder how to have integration tests that do not use client cookies?

My problem is that when I test my Rails served API using curl, when I do
not
pass credentials in headers my request is not accepted.
But when an iPhone is used as a client, or Rails integrations tests,
credentials seem to be saved between requests, which is something I do
not
want (I cannot deactivate storing sessions for the whole app because I
have
multiple route namespaces, but maybe it’s possible for a controller
only?).

Thanks.

Nobody here is working on an API and is concerned by this matter?