public void WhenListOfEventsIsEmptyShouldTransitionToRequeryingEvents()
{
IEnumerable<Event> events = new Event[] {};
RecentEventsFeed recentEventsFeed = RecentEventsFeedBuilder.EmptyCurrentFeed();
ITask start = new UpdatingRecentEventsFeed(recentEventsFeed, events);
ITask end = start.Execute(new InMemoryFileSystem(), new EventBufferBuilder().Build(), new FeedBuilder(SampleLinks.Instance), (args => { }));
Assert.IsInstanceOf(typeof (RequeryingEvents), end);
Assert.AreEqual(recentEventsFeed, end.GetRecentEventsFeed());
}
public void WhenRecentEventsFeedHasReachedQuotaAndThereAreNoRemainingEventsShouldTransitionToRequeryingEvents()
{
EventBuffer buffer = new EventBufferBuilder().WithNumberOfEvents(1).Build();
RecentEventsFeed recentEventsFeed = new RecentEventsFeedBuilder().WithNumberOfEntries(RecentEventsFeed.Quota - 1).Build();
ITask start = new UpdatingRecentEventsFeed(recentEventsFeed, buffer.Take(QueryingEvents.BatchSize));
ITask end = start.Execute(new InMemoryFileSystem(), buffer, new FeedBuilder(SampleLinks.Instance), (args => { }));
Assert.IsInstanceOf(typeof (RequeryingEvents), end);
Assert.AreEqual(recentEventsFeed, end.GetRecentEventsFeed());
}
public void WhileThereAreEventsInTheListOfEventsAndTheFeedIsUnderQuotaShouldContinueAddingEventsToFeed()
{
EventBuilder builder = new EventBuilder();
IEnumerable<Event> events = new[] {builder.Build(), builder.Build(), builder.Build()};
RecentEventsFeed recentEventsFeed = new RecentEventsFeedBuilder().WithNumberOfEntries(1).Build();
ITask start = new UpdatingRecentEventsFeed(recentEventsFeed, events);
ITask end = start.Execute(new InMemoryFileSystem(), new EventBufferBuilder().Build(), new FeedBuilder(SampleLinks.Instance), (args => { }));
Assert.IsInstanceOf(typeof (RequeryingEvents), end);
Assert.AreEqual(4, recentEventsFeed.GetNumberOfEntries());
}
public void WhenRecentEventsFeedHasReachedQuotaShouldTransitionToArchivingRecentEventsFeedWithRemainingEvents()
{
EventBuilder eventBuilder = new EventBuilder();
Event event1 = eventBuilder.WithId(1).Build();
Event event2 = eventBuilder.WithId(2).Build();
Event event3 = eventBuilder.WithId(3).Build();
EventBuffer buffer = new EventBufferBuilder().WithEvents(event1, event2, event3).Build();
RecentEventsFeed recentEventsFeed = new RecentEventsFeedBuilder().WithNumberOfEntries(RecentEventsFeed.Quota - 1).Build();
ITask start = new UpdatingRecentEventsFeed(recentEventsFeed, buffer.Take(QueryingEvents.BatchSize));
ITask end = start.Execute(new InMemoryFileSystem(), buffer, new FeedBuilder(SampleLinks.Instance), (args => { }));
Assert.IsInstanceOf(typeof (ArchivingRecentEventsFeed), end);
Assert.AreEqual(recentEventsFeed, end.GetRecentEventsFeed());
Assert.AreEqual(2, end.GetEvents().Count());
Assert.AreEqual(event2, end.GetEvents().ElementAt(0));
Assert.AreEqual(event3, end.GetEvents().ElementAt(1));
}