'If discussion blackout period has started Add a post button should not appear.'

def test_add_post_not_present_if_discussion_blackout_period_started(self):

    self.start_discussion_blackout_period()
    self.browser.refresh()
    self.discussion_page.expand_discussion()
    self.assertFalse(self.discussion_page.is_new_post_button_visible())
