public void TestAssertTopic()
{
var storeId = Guid.NewGuid().ToString();
var eventService = new EventFeedService(storeId);
eventService.AssertTopic(new Uri("http://www.brightstardb.com/topics/34"), "Topic 34", "A very important topic");
// use a raw context to check it exist
var ctx = GetContext(storeId);
Assert.AreEqual(1, ctx.Topics.Count());
Assert.AreEqual(new Uri("http://www.brightstardb.com/topics/34"), ctx.Topics.ToList()[0].Id);
}