public void WhenRegionManagerChangesToNotNullValue_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); childView.SetValue(ClearChildViewsRegionBehavior.ClearChildViewsProperty, true); Assert.AreEqual(regionManager, childView.GetValue(RegionManager.RegionManagerProperty)); region.RegionManager = new MockRegionManager(); Assert.IsNotNull(childView.GetValue(RegionManager.RegionManagerProperty)); }
public void WhenClearChildViewsPropertyIsTrue_ThenChildViewsRegionManagerIsCleared() { 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); ClearChildViewsRegionBehavior.SetClearChildViews(childView, true); Assert.Equal(regionManager, childView.GetValue(RegionManager.RegionManagerProperty)); region.RegionManager = null; Assert.Null(childView.GetValue(RegionManager.RegionManagerProperty)); }