public void have_non_empty_title()
{
//_feed.SetTitle("Event stream 'test'");
_feed.SetId(FeedUrl);
_feed.SetUpdated(DateTime.UtcNow);
_feed.SetAuthor(AtomSpecs.Author);
_feed.AddLink(FeedUrl, "self", null);
Assert.Throws <ArgumentNullException>(() => _feed.SetTitle(null));
Assert.Throws <AtomSpecificationViolationException>(() => _feed.WriteXml(_writer));
}