public void FindWeakT_NullDelegate_ReturnsHandler()
{
var s1 = new Stub1();
EventHandler <EventArgs> handler = s1.Handler;
Assert.IsNull(s1.StubEvent);
Assert.AreSame(handler, WeakEventHandlerExtensions.FindWeak <EventArgs>(s1.StubEvent, handler));
}
public void FindWeakT_NotWeak_ReturnsStrongHandler()
{
var s1 = new Stub1();
EventHandler <EventArgs> handler = s1.Handler;
s1.StubEvent += handler;
Assert.AreSame(handler, WeakEventHandlerExtensions.FindWeak <EventArgs>(s1.StubEvent, handler));
}
public void MakeWeakT_FireEvent_SourceHandlerCalled()
{
var s1 = new Stub1();
var weakEventHandler = WeakEventHandlerExtensions.MakeWeak <EventArgs>(s1.Handler, args => { });
weakEventHandler(this, new EventArgs());
Assert.AreEqual(1, s1.FireCount);
}
public void MakeWeakT_AlreadyWeak_ReturnsExisting()
{
var s1 = new Stub1();
var weakEventHandler1 = WeakEventHandlerExtensions.MakeWeak <EventArgs>(s1.Handler, args => { });
var weakEventHandler2 = WeakEventHandlerExtensions.MakeWeak <EventArgs>(weakEventHandler1, args => { });
Assert.AreSame(weakEventHandler1, weakEventHandler2);
}
public void FindWeakT_StaticHandler_ReturnsStaticHandler()
{
var s1 = new Stub1();
s1.StubEvent += (o, args) => { }; // Make s1.StubEvent!=null
EventHandler <EventArgs> handler = StaticHandler;
Assert.AreSame(handler, WeakEventHandlerExtensions.FindWeak <EventArgs>(s1.StubEvent, handler));
}
public void MakeWeakT_DoesntPreventGC()
{
var s1 = new Stub1();
WeakReference ws1 = new WeakReference(s1);
var weakEventHandler1 = WeakEventHandlerExtensions.MakeWeak <EventArgs>(s1.Handler, args => { });
s1 = null;
GC.Collect();
Assert.IsFalse(ws1.IsAlive);
}
public void FindWeakT_IsWeak_CallsIsHandlerFor()
{
var weakMock = new WeakEventHandlerMock <EventArgs>();
var s1 = new Stub1();
s1.StubEvent += weakMock.HandlerT;
EventHandler <EventArgs> strongHandler = s1.Handler;
EventHandler <EventArgs> weakHandler = WeakEventHandlerExtensions.FindWeak <EventArgs>(s1.StubEvent, strongHandler);
Assert.AreEqual(weakMock.HandlerT, weakHandler);
Assert.AreSame(weakMock.LastIsHandlerFor, strongHandler);
}
public void MakeWeakT_AnonymousMethod_Throws()
{
int counter = 0; // We have to capture something in order to create a closure that the called code can detec.
WeakEventHandlerExtensions.MakeWeak <EventArgs>((o, args) => ++ counter, args => { });
}
public void MakeWeakT_StaticHandler_Throws()
{
WeakEventHandlerExtensions.MakeWeak <EventArgs>(StaticHandler, args => { });
}
public void MakeWeakT_NullUnregister_Throws()
{
var s1 = new Stub1();
WeakEventHandlerExtensions.MakeWeak <EventArgs>(s1.Handler, null);
}
public void MakeWeakT_NullEvent_Throws()
{
WeakEventHandlerExtensions.MakeWeak <EventArgs>(null, args => { });
}
public void FindWeakT_NullHandler_Throws()
{
var s1 = new Stub1();
WeakEventHandlerExtensions.FindWeak <EventArgs>(s1.StubEvent, null);
}
