public void FindAncestor_NotVisualElement_Null()
{
//arrange
DependencyObject visualTree = XamlServices.Parse(@"
<Hyperlink xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"" xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
<Span>Some Text</Span>
</Hyperlink>
") as DependencyObject;
//action
DependencyObject item = WPFVisualHelper.FindAncestor <TextBlock>(visualTree);
//assert
Assert.IsNull(item);
}
public void FindAncestor_FindNotExistingAncestor_Null()
{
//arrange
FrameworkElement visualTree = XamlServices.Parse(@"
<Grid xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"" xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
<StackPanel Orientation=""Horizontal"">
<Image x:Name=""itemImage"" />
<TextBlock Text=""Some Text"" />
</StackPanel>
</Grid>
") as FrameworkElement;
//action
DependencyObject notFoundElement = WPFVisualHelper.FindAncestor <WrapPanel>(visualTree.FindName("itemImage") as DependencyObject);
//assert
Assert.IsNull(notFoundElement);
}
