public void GetCountOfEventRecipients_NameofEventName_WithNoSubscribers_ReturnsZero()
{
// Arrange
var stub = new EventClassStub();
// Act
var actualCount = CoClassEventReflector.GetCountOfEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom1Event));
// Assert
Assert.AreEqual(0, actualCount);
}
public void HasEventRecipients_NameofEventNameParam_NoSubscriber_ReturnsFalse()
{
// Arrange
var stub = new EventClassStub();
// Act
var actualValue = CoClassEventReflector.HasEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom1Event));
// Assert
Assert.IsFalse(actualValue);
}
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 GetCountOfEventRecipients_NonExistingEventName_ThrowsArgumentException()
{
// Arrange
var stub = new EventClassStub();
// Act & Assert
var actualException = Assert.Throws <ArgumentOutOfRangeException>(
() => CoClassEventReflector.GetCountOfEventRecipients(stub, typeof(EventClassStub), "IncorrectEventName"));
Assert.AreEqual("eventName", actualException.ParamName);
Assert.AreEqual("IncorrectEventName", actualException.ActualValue);
}
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 HasEventRecipients_NameofEventNameParam_EventWithSubscriber_ReturnsTrue()
{
// Arrange
var stub = new EventClassStub();
stub.Custom1Event += (sender, args) => { };
// Act
var actualValue = CoClassEventReflector.HasEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom1Event));
// Assert
Assert.IsTrue(actualValue);
}
public void HasEventRecipients_EventNameParam_NoSubscriberForNamedEvent_ReturnsFalse()
{
// Arrange
var stub = new EventClassStub();
stub.Custom1Event += (obj, arg) => { };
// Act
var actualValue = CoClassEventReflector.HasEventRecipients(stub, typeof(EventClassStub), "Custom2");
// Assert
Assert.IsFalse(actualValue);
}
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 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 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);
}
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);
}
public void GetCountOfEventRecipients_NameofEventName_WithMultipleSubscribers_ReturnsCorrectCount()
{
// Arrange
var stub = new EventClassStub();
stub.Custom1Event += OnCustom1EventHandler;
stub.Custom2Event += OnCustom1EventHandler;
stub.Custom2Event += OnCustom1EventHandler;
stub.Custom3Event += OnCustom1EventHandler;
stub.Custom3Event += OnCustom1EventHandler;
stub.Custom3Event += OnCustom1EventHandler;
// Act
var actualCount = CoClassEventReflector.GetCountOfEventRecipients(stub, typeof(EventClassStub), nameof(EventClassStub.Custom3Event));
// Assert
Assert.AreEqual(3, actualCount);
}
