Cirrious.MvvmCross.Plugins.Messenger.Test.MessengerHubTest.SubscribeAndUnsubscribeCauseChangeMessages C# (CSharp) Method

        public void SubscribeAndUnsubscribeCauseChangeMessages()
        {
            var messenger = new MvxMessengerHub();
            MvxSubscriberChangeMessage subscriberChangeMessage = null;
            var changeToken = messenger.Subscribe<MvxSubscriberChangeMessage>(message => subscriberChangeMessage = message);
            var token = messenger.Subscribe<TestMessage>(m =>
            {
                // stuff
            });
            Assert.NotNull(subscriberChangeMessage);
            Assert.AreEqual(1, subscriberChangeMessage.SubscriberCount);
            Assert.AreEqual(typeof(TestMessage), subscriberChangeMessage.MessageType);
            subscriberChangeMessage = null;
            messenger.Unsubscribe<TestMessage>(token);
            Assert.NotNull(subscriberChangeMessage);
            Assert.AreEqual(0, subscriberChangeMessage.SubscriberCount);
            Assert.AreEqual(typeof(TestMessage), subscriberChangeMessage.MessageType);
        }