public void WhenListenerIsDisposed_ThenCallbackIsNoLongerInvoked()
{
bool wasCalled = false;
var target = new NotifyingSampleObject()
{
Child = new NotifyingSampleObject()
{
Value = "foo"
}
};
var listener = new PropertyChangedHelper().BuildListener(target, x => x.Child.Value, () => wasCalled = true);
listener.Dispose();
target.Child.Value = "bar";
Assert.IsFalse(wasCalled);
}