def test_non_callable(self):
        with pytest.raises(TypeError) as excinfo:
            event.event(123)
        excinfo.match(r"Expected string, callable or None as first argument")

        with pytest.raises(TypeError) as excinfo:
            event.event("name")([])
        excinfo.match(r"Callable must be a function \(`def`\)"
                      r" or coroutine function \(`async def`\)")
def __init__(self, reddit, term, config, oauth, url=None, submission=None):
        super(SubmissionPage, self).__init__(reddit, term, config, oauth)

        self.controller = SubmissionController(self, keymap=config.keymap)

        if url:
            self.content = SubmissionContent.from_url(
                reddit, url, term.loader,
                max_comment_cols=config['max_comment_cols'])
        else:
            self.content = SubmissionContent(
                submission, term.loader,
                max_comment_cols=config['max_comment_cols'])
        # Start at the submission post, which is indexed as -1
        self.nav = Navigator(self.content.get, page_index=-1)
        self.selected_subreddit = None