public void TestDeadSubscriber()
{
StringBuilder sb = new StringBuilder();
var hub = new MsgBroker();
var subscriberA = new TestSubscriber(sb);
var subscriberB = new TestSubscriber(sb);
hub.Subscribe <string>(subscriberA, s => sb.Append($"A({s})"));
hub.Subscribe <string>(subscriberB, s => sb.Append($"B({s})"));
hub.PublishObject("x");
hub.PublishObject("y");
Assert.That(sb.ToString(), Is.EqualTo("A(x)B(x)A(y)B(y)"));
subscriberA = null;
GC.Collect();
sb.Clear();
hub.PublishObject("x");
hub.PublishObject("y");
Assert.That(sb.ToString(), Is.EqualTo("B(x)B(y)"));
subscriberB.Reset(); // make sure subscriberB stays alive
}
void Check(MsgBroker hub, TestSubscriber subscriber, Action <MsgBroker> action, int expectedCalls, string expectedResult = null)
{
subscriber.Reset();
action(hub);
Assert.That(subscriber.Calls, Is.EqualTo(expectedCalls));
if (expectedResult != null)
{
Assert.That(subscriber.Result, Is.EqualTo(expectedResult));
}
}