public void Test_Messenger_Cleanup(Type type)
{
var messenger = (IMessenger)Activator.CreateInstance(type);
var recipient = new RecipientWithSomeMessages();
messenger.Register <MessageA>(recipient);
Assert.IsTrue(messenger.IsRegistered <MessageA>(recipient));
void Test()
{
var recipient2 = new RecipientWithSomeMessages();
messenger.Register <MessageB>(recipient2);
Assert.IsTrue(messenger.IsRegistered <MessageB>(recipient2));
GC.KeepAlive(recipient2);
}
Test();
GC.Collect();
// Here we just check that calling Cleanup doesn't alter the state
// of the messenger. This method shouldn't really do anything visible
// to consumers, it's just a way for messengers to compact their data.
messenger.Cleanup();
Assert.IsTrue(messenger.IsRegistered <MessageA>(recipient));
}
public void Test_Messenger_IRecipient_SomeMessages_WithToken(Type type)
{
var messenger = (IMessenger)Activator.CreateInstance(type);
var recipient = new RecipientWithSomeMessages();
var token = nameof(Test_Messenger_IRecipient_SomeMessages_WithToken);
messenger.RegisterAll(recipient, token);
Assert.IsTrue(messenger.IsRegistered <MessageA, string>(recipient, token));
Assert.IsTrue(messenger.IsRegistered <MessageB, string>(recipient, token));
Assert.IsFalse(messenger.IsRegistered <MessageA>(recipient));
Assert.IsFalse(messenger.IsRegistered <MessageB>(recipient));
Assert.AreEqual(recipient.As, 0);
Assert.AreEqual(recipient.Bs, 0);
messenger.Send <MessageB, string>(token);
Assert.AreEqual(recipient.As, 0);
Assert.AreEqual(recipient.Bs, 1);
messenger.Send <MessageA, string>(token);
Assert.AreEqual(recipient.As, 1);
Assert.AreEqual(recipient.Bs, 1);
messenger.UnregisterAll(recipient, token);
Assert.IsFalse(messenger.IsRegistered <MessageA>(recipient));
Assert.IsFalse(messenger.IsRegistered <MessageB>(recipient));
}
public void Test_IRecipientGenerator_GeneratedRegistration()
{
var messenger = new StrongReferenceMessenger();
var recipient = new RecipientWithSomeMessages();
var messageA = new MessageA();
var messageB = new MessageB();
Action <IMessenger, object, int> registrator = Microsoft.Toolkit.Mvvm.Messaging.__Internals.__IMessengerExtensions.CreateAllMessagesRegistratorWithToken <int>(recipient);
registrator(messenger, recipient, 42);
Assert.IsTrue(messenger.IsRegistered <MessageA, int>(recipient, 42));
Assert.IsTrue(messenger.IsRegistered <MessageB, int>(recipient, 42));
Assert.IsNull(recipient.A);
Assert.IsNull(recipient.B);
messenger.Send(messageA, 42);
Assert.AreSame(recipient.A, messageA);
Assert.IsNull(recipient.B);
messenger.Send(messageB, 42);
Assert.AreSame(recipient.A, messageA);
Assert.AreSame(recipient.B, messageB);
}
public void Test_Messenger_IRecipient_SomeMessages_NoToken()
{
var messenger = new Messenger();
var recipient = new RecipientWithSomeMessages();
messenger.RegisterAll(recipient);
Assert.IsTrue(messenger.IsRegistered <MessageA>(recipient));
Assert.IsTrue(messenger.IsRegistered <MessageB>(recipient));
Assert.AreEqual(recipient.As, 0);
Assert.AreEqual(recipient.Bs, 0);
messenger.Send <MessageA>();
Assert.AreEqual(recipient.As, 1);
Assert.AreEqual(recipient.Bs, 0);
messenger.Send <MessageB>();
Assert.AreEqual(recipient.As, 1);
Assert.AreEqual(recipient.Bs, 1);
messenger.UnregisterAll(recipient);
Assert.IsFalse(messenger.IsRegistered <MessageA>(recipient));
Assert.IsFalse(messenger.IsRegistered <MessageB>(recipient));
}
void Test()
{
var recipient = new RecipientWithSomeMessages();
weakRecipient = new WeakReference(recipient);
messenger.Register <MessageA>(recipient);
Assert.IsTrue(messenger.IsRegistered <MessageA>(recipient));
Assert.AreEqual(GetRecipientsMapCount(messenger), 1);
GC.KeepAlive(recipient);
}
public void Test_Messenger_Reset(Type type)
{
var messenger = (IMessenger)Activator.CreateInstance(type);
var recipient = new RecipientWithSomeMessages();
messenger.RegisterAll(recipient);
Assert.IsTrue(messenger.IsRegistered <MessageA>(recipient));
Assert.IsTrue(messenger.IsRegistered <MessageB>(recipient));
messenger.Reset();
Assert.IsFalse(messenger.IsRegistered <MessageA>(recipient));
Assert.IsFalse(messenger.IsRegistered <MessageB>(recipient));
}
