public void HasSubscriptionsForIsCorrect()
{
var messenger = new MvxMessengerHub();
Assert.AreEqual(false, messenger.HasSubscriptionsFor<MvxSubscriberChangeMessage>());
Assert.AreEqual(false, messenger.HasSubscriptionsFor<TestMessage>());
var changeToken = messenger.Subscribe<MvxSubscriberChangeMessage>(message => { });
Assert.AreEqual(true, messenger.HasSubscriptionsFor<MvxSubscriberChangeMessage>());
Assert.AreEqual(false, messenger.HasSubscriptionsFor<TestMessage>());
var token = messenger.Subscribe<TestMessage>(m =>
{
// stuff
});
Assert.AreEqual(true, messenger.HasSubscriptionsFor<MvxSubscriberChangeMessage>());
Assert.AreEqual(true, messenger.HasSubscriptionsFor<TestMessage>());
messenger.Unsubscribe<TestMessage>(token);
Assert.AreEqual(true, messenger.HasSubscriptionsFor<MvxSubscriberChangeMessage>());
Assert.AreEqual(false, messenger.HasSubscriptionsFor<TestMessage>());
}