public void Request_Is_Retried()
{
// arrange
var userWriter = new Mock<IUserWriter>();
var requestQueue = new MockRequestQueue();
var responseQueue = new MockResponseQueue();
var controller = new CrawlerController(userWriter.Object, requestQueue, responseQueue, new RecentFriendRegistry());
var retryRequest = new GetFriendsRequest("test");
var errorResponse = new ErrorResponse(retryRequest, "fail whale");
// act
controller.ProcessResponse(errorResponse);
// assert
Assert.That(requestQueue.QueuedMessages, Has.Count(1));
Assert.That(requestQueue.QueuedMessages.Single(), Is.SameAs(retryRequest));
}
public void ErrorResponse_Is_Queued()
{
// arrange
var requestQueue = new MockRequestQueue();
var responseQueue = new MockResponseQueue();
var statusService = new Mock<IStatusService>();
statusService.Setup(ss => ss.GetFriendsOf("test")).Throws(new XmlException("Twitter is full of FAIL!"));
var crawler = new TwitterCrawler(requestQueue, responseQueue, statusService.Object);
// act
var friendRequest = new GetFriendsRequest("test");
crawler.ProcessRequest(friendRequest);
// assert
Assert.That(responseQueue.QueuedMessages, Has.Count(1));
Assert.That(responseQueue.QueuedMessages.Single(), Is.TypeOf(typeof(ErrorResponse)));
var response = (ErrorResponse)responseQueue.QueuedMessages.Single();
Assert.That(response.Request, Is.SameAs(friendRequest));
}
private void ProcessGetFriendsRequest(GetFriendsRequest request)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
IEnumerable<UserInfo> friends = statusService.GetFriendsOf(request.UserName);
if (friends == null)
{
log.Warn("Can't get friends of " + request.UserName + " - returned null.");
responseQueue.Send(new ErrorResponse(request, "GetFriendsOf returned null."));
}
else
{
responseQueue.Send(new GetFriendsResponse(request.UserName, friends));
ReportStopwatchResult(stopwatch, "GetFriends", friends.Count());
}
}