public void SetUp()
{
status = new Status();
user = status.User = new User();
vm = new TweetViewModel(status);
}
private IEnumerable<Action> ExtendToOlder(TweetViewModel tweet)
{
IEnumerable<Status> olderStatuses = null;
yield return () => olderStatuses = _service.GetOlder(tweet.Status);
WhileRetainingSelectedTweet(() => AppendStatuses(olderStatuses));
}
