def METHOD_NAME(self):
    self.browser.open("%s/@@site-controlpanel" % self.portal_url)
    self.browser.getControl("Site title").value = "My Site"
    self.browser.getControl("Save").click()
    portal_state = getMultiAdapter(
        (self.portal, self.request), name="plone_portal_state"
    )
    self.assertEqual(portal_state.portal_title(), "My Site")