public void EventSubscription_ctor_subscribe_different_type_event_hendler()
{
// Arrange
var instanceMock = new Mock <IDummyObserver>();
var source = new DummyEventSource();
// Act
var subscription = new EventSubscription(
source, nameof(source.InstanceHandler1), new Action <object, EventArgs>(instanceMock.Object.EventHandler));
// Assert
var args = new EventArgs();
source.InvokeInstanceHandler1(args);
instanceMock.Verify(e => e.EventHandler(source, args), Times.Once);
}
public void AddEventSubscription_adds_instance_handler_delegate_to_the_DisposableContainer()
{
var container = new DisposableContainer();
var instanceMock = new Mock <IDummyObserver>();
var source = new DummyEventSource();
var args = new EventArgs();
container.AddEventSubscription <object, EventArgs>(
source,
nameof(source.InstanceHandler1),
instanceMock.Object.EventHandler);
source.InvokeInstanceHandler1(args);
container.Dispose();
source.InvokeInstanceHandler1(args);
instanceMock.Verify(d => d.EventHandler(It.IsAny <object>(), It.IsAny <EventArgs>()), Times.Once);
}
public void EventSubscription_Dispose_unsubscribe_same_type_event()
{
// Arrange
var instanceMock = new Mock <IDummyObserver>();
var source = new DummyEventSource();
var subscription = new EventSubscription(
source, nameof(source.InstanceHandler1), new EventHandler(instanceMock.Object.EventHandler));
// Act
subscription.Dispose();
// Assert
var args = new EventArgs();
source.InvokeInstanceHandler1(args);
instanceMock.Verify(e => e.EventHandler(It.IsAny <object>(), It.IsAny <EventArgs>()), Times.Never);
}
public void EventSubscription_ctor_subscribe_multi_same_type_delegate()
{
// Arrange
var instanceMock = new Mock <IDummyObserver>();
var source = new DummyEventSource();
// Act
var subscription = new EventSubscription(
source, nameof(source.InstanceHandler1), Delegate.Combine(
new EventHandler(instanceMock.Object.EventHandler),
new EventHandler(instanceMock.Object.EventHandler)
));
// Assert
var args = new EventArgs();
source.InvokeInstanceHandler1(args);
instanceMock.Verify(e => e.EventHandler(source, args), Times.Exactly(2));
}