public void WhenClearChildViewsPropertyIsNotSet_ThenChildViewsRegionManagerIsNotCleared()
{
var regionManager = new MockRegionManager();
var region = new Region();
region.RegionManager = regionManager;
var behavior = new ClearChildViewsRegionBehavior();
behavior.Region = region;
behavior.Attach();
var childView = new MockFrameworkElement();
region.Add(childView);
Assert.AreEqual(regionManager, childView.GetValue(RegionManager.RegionManagerProperty));
region.RegionManager = null;
Assert.AreEqual(regionManager, childView.GetValue(RegionManager.RegionManagerProperty));
}
public void WhenViewHasBeenRemovedAndRegionManagerPropertyCleared_ThenItCanBeAddedAgainToARegion()
{
IRegion region = new Region { RegionManager = new MockRegionManager() };
var view = new MockFrameworkElement();
var scopedRegionManager = region.Add(view, null, true);
Assert.AreEqual(view, region.Views.First());
region.Remove(view);
view.ClearValue(RegionManager.RegionManagerProperty);
Assert.AreEqual(0, region.Views.Cast<object>().Count());
var newScopedRegion = region.Add(view, null, true);
Assert.AreEqual(view, region.Views.First());
Assert.AreSame(newScopedRegion, view.GetValue(RegionManager.RegionManagerProperty));
}