public void RaiseCustomEvent_WithNoSubscribers_ReturnsZero()
{
// Arrange
var stub = new EventClassStub();
var p = new object[] { };
// Act
var actualCount = CoClassEventReflector.RaiseCustomEvent(stub, typeof(EventClassStub), "Custom1", ref p);
// Assert
Assert.AreEqual(0, actualCount);
}
public void RaiseCustomEvent_NonExistingEventName_ThrowsArgumentException()
{
// Arrange
var stub = new EventClassStub();
var p = new object[] { };
// Act & Assert
var actualException = Assert.Throws <ArgumentOutOfRangeException>(
() => CoClassEventReflector.RaiseCustomEvent(stub, typeof(EventClassStub), "NonExistingEventName", ref p));
Assert.AreEqual("eventName", actualException.ParamName);
Assert.AreEqual("NonExistingEventName", actualException.ActualValue);
}
public void RaiseCustomEvent_WithTwoSubscribers_ReturnsTwo()
{
// Arrange
var stub = new EventClassStub();
stub.Custom2Event += OnCustom2EventHandler;
stub.Custom2Event += OnCustom2EventHandler;
var p = new object[] { this, new EventArgs() };
// Act
var actualCount = CoClassEventReflector.RaiseCustomEvent(stub, typeof(EventClassStub), "Custom2", ref p);
// Assert
Assert.AreEqual(2, actualCount);
}
public void RaiseCustomEvent_NameofEventName_WithThreeSubscribers_ReturnsCorrectInvocationsCount()
{
// Arrange
var stub = new EventClassStub();
stub.Custom3Event += OnCustom3EventHandler;
stub.Custom3Event += OnCustom3EventHandler;
stub.Custom3Event += OnCustom3EventHandler;
var p = new object[] { this, new EventArgs() };
// Act
var actualCount = CoClassEventReflector.RaiseCustomEvent(stub, typeof(EventClassStub), nameof(EventClassStub.Custom3Event), ref p);
// Assert
Assert.AreEqual(3, actualCount);
}