public void TestAttachAndDetach2()
{
var h = new EventHost ();
Assert.IsFalse (h.HasMyEvent, "#1");
string value = null;
// FromEvent<TDelegate,TEventArgs> (Func<Action<TEventArgs>, TDelegate> conversion, Func<TDelegate> addHandler, Func<TDelegate> removeHandler)
var source = Observable.FromEvent<MyEventHandler, MyEventArgs> (
eh => new MyEventHandler (s => eh (new MyEventArgs (s))),
ev => h.MyEvent += ev,
ev => h.MyEvent -= ev);
Assert.IsFalse (h.HasMyEvent, "#2"); // not subscribed yet
var dis = source.Subscribe (v => value = v.Value);
Assert.IsTrue (h.HasMyEvent, "#3");
h.FireMyEvent ("foo");
Assert.AreEqual ("foo", value, "#4");
dis.Dispose (); // unsubscribe event handler
Assert.IsFalse (h.HasMyEvent, "#6");
}
public void TestAttachAndDetach2()
{
var h = new EventHost();
Assert.IsFalse(h.HasMyEvent, "#1");
string value = null;
// FromEvent<TDelegate,TEventArgs> (Func<Action<TEventArgs>, TDelegate> conversion, Func<TDelegate> addHandler, Func<TDelegate> removeHandler)
var source = Observable.FromEvent <MyEventHandler, MyEventArgs> (
eh => new MyEventHandler(s => eh(new MyEventArgs(s))),
ev => h.MyEvent += ev,
ev => h.MyEvent -= ev);
Assert.IsFalse(h.HasMyEvent, "#2"); // not subscribed yet
var dis = source.Subscribe(v => value = v.Value);
Assert.IsTrue(h.HasMyEvent, "#3");
h.FireMyEvent("foo");
Assert.AreEqual("foo", value, "#4");
dis.Dispose(); // unsubscribe event handler
Assert.IsFalse(h.HasMyEvent, "#6");
}
