RavenDB lazy search against Index returns uninitialized statistiscs - ravendb

Question

I am trying to run lazy queries against raven db and get the counts on total matching results. I am finding when I query against a static index, a lazy search does not initialize the statistics when the query is materialized, but otherwise it comes back all right.
Below is the test to prove this behaviour.
[TestFixture]
public class CanSearchLazily
{
private const int ServerPort = 8085;
private readonly string _serverAddress = #"http://localhost:{0}".For(ServerPort);
[Test]
public void CanGetTotalResultsFromStatisticsOnLazySearchAgainstDynamicIndex()
{
CanGetTotalResultsFromStatisticsOnLazySearchAgainstAnIndex();
}
[Test]
public void CanGetTotalResultsFromStatisticsOnLazySearchAgainstStaticIndex()
{
CanGetTotalResultsFromStatisticsOnLazySearchAgainstAnIndex("UserByFirstName");
}
private void CanGetTotalResultsFromStatisticsOnLazySearchAgainstAnIndex(string indexName = "")
{
BuilderSetup.DisablePropertyNamingFor<User, string>(x => x.Id);
var users = Builder<User>.CreateListOfSize(2000).All()
.With(x => x.FirstName = GetRandom.FirstName())
.With(x => x.LastName = GetRandom.LastName())
.Build();
using (GetNewServer())
using (var store = new DocumentStore { Url = _serverAddress }.Initialize())
{
using (var session = store.OpenSession())
{
users.ForEach(session.Store);
session.SaveChanges();
IndexCreation.CreateIndexes(typeof(UserByFirstName).Assembly, store);
session.Query<User, UserByFirstName>().Customize(x => x.WaitForNonStaleResults()).ToList();
}
using (var session = store.OpenSession())
{
var names = session.Query<User>().Select(u => u.FirstName).Distinct().Take(15).ToList();
RavenQueryStatistics stats;
var query = string.IsNullOrEmpty(indexName)
? session.Query<User>().Statistics(out stats).Where(x => x.FirstName.In(names))
: session.Query<User>(indexName).Statistics(out stats).Where(x => x.FirstName.In(names));
var results = query.Take(8).Lazily();
Assert.AreEqual(8, results.Value.ToList().Count);
Assert.AreEqual(DateTime.Now.Year, stats.IndexTimestamp.Year, "the index should have the current year on its timestamp");
Assert.IsTrue(stats.TotalResults > 0, "The stats should return total results");
}
}
}
protected RavenDbServer GetNewServer(bool initializeDocumentsByEntitiyName = true)
{
var ravenConfiguration = new RavenConfiguration
{
Port = ServerPort,
RunInMemory = true,
DataDirectory = "Data",
AnonymousUserAccessMode = AnonymousUserAccessMode.All
};
if (ravenConfiguration.RunInMemory == false)
IOExtensions.DeleteDirectory(ravenConfiguration.DataDirectory);
var ravenDbServer = new RavenDbServer(ravenConfiguration);
if (initializeDocumentsByEntitiyName)
{
using (var documentStore = new DocumentStore
{
Url = _serverAddress
}.Initialize())
{
new RavenDocumentsByEntityName().Execute(documentStore);
}
}
return ravenDbServer;
}
}
[Serializable]
public class User
{
public string Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
public class UserByFirstName : AbstractIndexCreationTask<User>
{
public UserByFirstName()
{
Map = users => from user in users
select new {user.FirstName};
}
}