public void Clearing_Content_Should_Clear_Logical_Child()
{
var target = new HeaderedItemsControl();
var child = new Control();
target.Header = child;
target.Header = null;
Assert.Null(child.Parent);
Assert.Null(child.GetLogicalParent());
Assert.Empty(target.GetLogicalChildren());
}
public void Control_Header_Should_Be_Logical_Child_Before_ApplyTemplate()
{
var target = new HeaderedItemsControl
{
Template = GetTemplate(),
};
var child = new Control();
target.Header = child;
Assert.Equal(child.Parent, target);
Assert.Equal(child.GetLogicalParent(), target);
Assert.Equal(new[] { child }, target.GetLogicalChildren());
}
public void DataTemplate_Created_Control_Should_Be_Logical_Child_After_ApplyTemplate()
{
var target = new HeaderedItemsControl
{
Template = GetTemplate(),
};
target.Header = "Foo";
target.ApplyTemplate();
target.HeaderPresenter.UpdateChild();
var child = target.HeaderPresenter.Child;
Assert.NotNull(child);
Assert.Equal(target, child.Parent);
Assert.Equal(target, child.GetLogicalParent());
Assert.Equal(new[] { child }, target.GetLogicalChildren());
}