public void Properties() => Create(vm =>
{
var view = new ScrollViewer {
DataContext = vm
};
var src = new VisibleRange();
src.Attach(view);
Assert.That(src.First, Is.EqualTo(0));
Assert.That(src.Last, Is.EqualTo(0));
Assert.That(src.Unit, Is.EqualTo(0));
src.Detach();
});
public void Invoke()
{
var view = new ScrollViewer();
var src = new VisibleRange();
Assert.That(view.ActualWidth, Is.EqualTo(0), nameof(view.ActualWidth));
Assert.That(view.ActualHeight, Is.EqualTo(0), nameof(view.ActualHeight));
src.Attach(view);
Assert.That(src.First, Is.EqualTo(0), nameof(src.First));
Assert.That(src.Last, Is.EqualTo(0), nameof(src.Last));
Assert.That(src.Unit, Is.EqualTo(0), nameof(src.Unit));
src.Unit = 100;
Assert.That(src.First, Is.EqualTo(0), nameof(src.First));
Assert.That(src.Last, Is.EqualTo(3), nameof(src.Last));
Assert.That(src.Unit, Is.EqualTo(100), nameof(src.Unit));
src.Detach();
}