public void Handler_ShouldThrowException_WhenUnsubscribing_WhenUnsubscribedTwice()
{
//Arrange
var handler = new Handler();
var subscription = new ContextlessSubscription();
handler.Subscribe(subscription);
//Act
//Assert
handler.Unsubscribe(subscription);
Assert.ThrowsException <ArgumentException>(() => handler.Unsubscribe(subscription));
}
public void Handler_ShouldThrowException_WhenUnsubscribing_WhenEventIsNotSubscribed()
{
//Arrange
var handler = new Handler();
var subscription = new ContextfulSubscription();
//Act
//Assert
Assert.ThrowsException <ArgumentException>(() => handler.Unsubscribe(subscription));
}
public void Handler_ShouldNotNotify_WhenSubscriptionRemoved()
{
//Arrange
var subscriptionCalled = false;
var handler = new Handler();
var subscription = handler.Subscribe <ContextlessEvent>(() => {
subscriptionCalled = true;
});
handler.Unsubscribe(subscription);
//Act
handler.Dispatch <ContextlessEvent>();
//Assert
Assert.IsFalse(subscriptionCalled);
}