DepedencyProperty_LetsCheckTheEventHandlers.cs

[TestFixture]
public class LetsCheckTheEventHandlers
{
    [Test]
    public void ChainedEventHandlers()
    {
        var m = new MultiplyByTwo();
        var s = new CreateResultStars(m);
        Assert.AreEqual(string.Empty, s.Stars);

        m.Number = 3;
        Assert.AreEqual("******", s.Stars);
    }
}