public void Scenario1()
{
using (var ms = new MemoryStream())
{
var stream = new WORMStream(ms);
var serializer = new EventSerializer();
var store = new WormEventStore(stream, serializer);
var framework = new Framework <InventoryState>(store);
var id1 = framework
.Execute(new CreateProduct("test1"))
.Select(ev => ev.EntityId)
.First();
framework.Execute(new BuyProduct(id1, 10m, 20m));
var products = framework
.State
.Products
.ToList();
Assert.AreEqual(1, products.Count);
Assert.AreEqual("test1", products[0].Name);
var stocks = framework
.State
.Stock
.ToList();
Assert.AreEqual(1, stocks.Count);
Assert.AreEqual(products[0], stocks[0].Product);
Assert.AreEqual(10m, stocks[0].Quantity);
Assert.AreEqual(20m, stocks[0].Price);
}
}
private static TimeSpan Benchmark(WORMStream stream, int count, Action <WORMStream> action)
{
var sw = new Stopwatch();
sw.Start();
for (var i = 0; i < count; i++)
{
action(stream);
}
stream.Flush();
sw.Stop();
return(sw.Elapsed);
}
public void ReadsBackTheDataThatWasWritten()
{
using (var ms = new MemoryStream())
{
var sut = new WORMStream(ms);
sut.Append("some message");
sut.Append("multiple\rlines\n");
sut.Append(new byte[] { 1, 2, 3 });
var results = sut.ReadAll().ToList();
Assert.AreEqual("some message", Encoding.UTF8.GetString(results[0]));
Assert.AreEqual("multiple\rlines\n", Encoding.UTF8.GetString(results[1]));
CollectionAssert.AreEqual(new byte[] { 1, 2, 3 }, results[2]);
}
}
private static void Run(Func <Stream> streamFactory, int count, bool autoFlush)
{
var buffer = new byte[100];
using (var ms = streamFactory.Invoke())
{
var stream = new WORMStream(ms)
{
AutoFlush = autoFlush
};
var timeSpan = Benchmark(stream, count, it => it.Append(buffer));
var prefix = autoFlush ? "With" : "Without";
Console.WriteLine($"{prefix} auto-flush");
WriteResult(timeSpan, "Writing");
timeSpan = Benchmark(stream, 1, it => DoNothing(it.ReadAll()));
WriteResult(timeSpan, "Reading");
}
}
