public void GetEventRecipients_NameofEventNameParam_NoSubscriber_ReturnsFalse()
{
// Arrange
var stub = new EventClassStub();
// Act
var actualRecipient = CoClassEventReflector.GetEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom1Event));
// Assert
Assert.IsNotNull(actualRecipient);
CollectionAssert.IsEmpty(actualRecipient);
}
public void GetEventRecipients_WithNoSubscribers_ReturnsEmptyCollection()
{
// Arrange
var stub = new EventClassStub();
// Act
var actualRecipient = CoClassEventReflector.GetEventRecipients(stub, typeof(EventClassStub), "Custom1");
// Assert
Assert.IsNotNull(actualRecipient);
CollectionAssert.IsEmpty(actualRecipient);
}
public void GetEventRecipients_NonExistingEventName_ThrowsArgumentException()
{
// Arrange
var stub = new EventClassStub();
// Act & Assert
var actualException = Assert.Throws <ArgumentOutOfRangeException>(
() => CoClassEventReflector.GetEventRecipients(stub, typeof(EventClassStub), "NonExistingEventName")
);
Assert.AreEqual("eventName", actualException.ParamName);
Assert.AreEqual("NonExistingEventName", actualException.ActualValue);
}
public void GetEventRecipients_NameofEventNameParam_EventWithSubscriber_ReturnsTrue()
{
// Arrange
var stub = new EventClassStub();
stub.Custom1Event += OnCustom1EventHandler;
// Act
var actualRecipient = CoClassEventReflector.GetEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom1Event));
// Assert
CollectionAssert.IsNotEmpty(actualRecipient);
var recipient = actualRecipient[0];
Assert.AreEqual("OnCustom1EventHandler", recipient.Method.Name);
}
public void GetEventRecipients_WithMultipleSubscribers_ReturnsTheCorrectSubsriber()
{
// Arrange
var stub = new EventClassStub();
stub.Custom1Event += OnCustom1EventHandler;
stub.Custom2Event += OnCustom2EventHandler;
stub.Custom3Event += OnCustom3EventHandler;
// Act
var actualRecipient = CoClassEventReflector.GetEventRecipients(stub, typeof(EventClassStub), "Custom2");
// Assert
CollectionAssert.IsNotEmpty(actualRecipient);
var recipient = actualRecipient[0];
Assert.AreEqual("OnCustom2EventHandler", recipient.Method.Name);
}