public void GivenStreaming_EventIsRaised()
{
var lobamba = new NotifyCity {
Name = "Lobamba", Population = 11000
};
var rhine = new River {
Name = "Rhine", LengthKilometers = 1230
};
var geography = new object[] { lobamba, rhine };
var cityRiverEngine = new MultiRecordEngine(typeof(NotifyCity), typeof(River));
cityRiverEngine.BeginWriteFile("geography.txt");
cityRiverEngine.WriteNexts(geography);
Assert.AreEqual(2, mCityEventCount);
}