public void Create_DisposableOnceAction()
{
var n = 0;
var src = new DisposableOnceAction(() => n++, e => n--);
Assert.That(src.IgnoreTwice, Is.True);
Assert.That(src.Invoked, Is.False);
Assert.That(src.Disposed, Is.False);
src.Invoke();
Assert.That(src.Invoked, Is.True);
Assert.That(n, Is.EqualTo(1));
src.Invoke(); // ignore
Assert.That(n, Is.EqualTo(1));
src.IgnoreTwice = false;
Assert.That(() => src.Invoke(), Throws.TypeOf <TwiceException>());
Assert.That(n, Is.EqualTo(1));
src.Dispose();
Assert.That(src.Disposed, Is.True);
Assert.That(n, Is.EqualTo(0));
src.Dispose(); // ignore
src.IgnoreTwice = true;
Assert.That(() => src.Invoke(), Throws.TypeOf <ObjectDisposedException>());
}
public void Create_Null()
{
var n = 0;
using (var src = new DisposableOnceAction(() => ++ n, null))
{
src.Invoke();
src.Invoke();
}
Assert.That(n, Is.EqualTo(1));
}