public void TreeViewItemBackgroundShouldBeinherited() { var expectedBackgroundBrush = new SolidColorBrush(Colors.HotPink); var item = new TreeViewItem { Header = "Test" }; item.ApplyDefaultStyle(); item.Background = expectedBackgroundBrush; var contentGrid = item.FindVisualChild <Grid>("ContentGrid"); Assert.Equal(expectedBackgroundBrush, contentGrid.Background); }