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);
}