'Test order direction, of which "desc" is the only valid option.  The
option actually just gets swallowed, so it doesn\'t affect the params.'

def test_order_direction(self):

    threads = [make_minimal_cs_thread()]
    self.register_get_user_response(self.user)
    self.register_get_threads_response(threads, page=1, num_pages=1)
    self.client.get(self.url, {u'course_id': unicode(self.course.id), u'order_direction': u'desc'})
    self.assert_last_query_params({u'user_id': [unicode(self.user.id)], u'course_id': [unicode(self.course.id)], u'sort_key': [u'activity'], u'page': [u'1'], u'per_page': [u'10']})
