public void VectorChanged_AddWhileNotAttached_AttachNotCalled()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Add(stub);
TestUtilities.AssertNotAttached(stub);
}
public void VectorChanged_DuplicateAdd_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Add(stub);
TestUtilities.AssertThrowsInvalidOperationException(() => behaviorCollection.Add(stub));
}
public void Attach_MultipleObjects_ExceptionThrown()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior stub = new StubBehavior();
behaviorCollection.Attach(new Button());
TestUtilities.AssertThrowsInvalidOperationException(() => behaviorCollection.Attach(new StackPanel()));
}
public void VectorChanged_RemoveWhileNotAttached_DetachNotCalled()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
StubBehavior behavior = new StubBehavior();
behaviorCollection.Add(behavior);
behaviorCollection.Remove(behavior);
TestUtilities.AssertNotDetached(behavior);
}
public void VectorChanged_RemoveWhileAttached_Detached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new ToggleButton());
StubBehavior behavior = new StubBehavior();
behaviorCollection.Add(behavior);
behaviorCollection.Remove(behavior);
TestUtilities.AssertDetached(behavior);
}
public void VectorChanged_ReplaceWhileAttached_OldDetachedNewAttached()
{
BehaviorCollection behaviorCollection = new BehaviorCollection();
behaviorCollection.Attach(new Button());
StubBehavior first = new StubBehavior();
behaviorCollection.Add(first);
StubBehavior second = new StubBehavior();
behaviorCollection[0] = second;
TestUtilities.AssertDetached(first);
TestUtilities.AssertAttached(second, behaviorCollection.AssociatedObject);
}
public static void AssertNotAttached(StubBehavior behavior)
{
Assert.Equal(0, behavior.AttachCount); // "The behavior should not be attached."
Assert.Null(behavior.AssociatedObject); // "The AssociatedObject should be null for a non-attached Behavior."
}
public static void AssertAttached(StubBehavior behavior, IAvaloniaObject?associatedObject)
{
Assert.Equal(1, behavior.AttachCount); // "The behavior should be attached."
Assert.Equal(associatedObject, behavior.AssociatedObject); // "The AssociatedObject of the Behavior should be what it was attached to."
}
public static void AssertNotDetached(StubBehavior behavior)
{
Assert.Equal(0, behavior.DetachCount); // "The Behavior should not be detached."
}
public static void AssertDetached(StubBehavior behavior)
{
Assert.Equal(1, behavior.DetachCount); // "The Behavior should be detached."
Assert.Null(behavior.AssociatedObject); // "A Detached Behavior should have a null AssociatedObject."
}