public void Clearing_Content_Should_Remove_From_LogicalChildren()
{
var target = new ContentPresenter();
var child = new Control();
target.Content = child;
target.ApplyTemplate();
target.Content = null;
target.ApplyTemplate();
Assert.Equal(new ILogical[0], ((ILogical)target).LogicalChildren.ToList());
}
public void Clearing_Content_Clear_Childs_Parent()
{
var target = new ContentPresenter();
var child = new Control();
target.Content = child;
target.ApplyTemplate();
target.Content = null;
target.ApplyTemplate();
Assert.Null(child.Parent);
Assert.Null(child.GetLogicalParent());
}
public void Clearing_Content_Should_Fire_LogicalChildren_CollectionChanged()
{
var target = new ContentPresenter();
var child = new Control();
var called = false;
target.Content = child;
target.ApplyTemplate();
((ILogical)target).LogicalChildren.CollectionChanged += (s, e) => called = true;
target.Content = null;
target.ApplyTemplate();
Assert.True(called);
}
public void Setting_Content_Should_Make_Control_Appear_In_LogicalChildren()
{
var target = new ContentPresenter();
var child = new Control();
target.Content = child;
target.ApplyTemplate();
Assert.Equal(new[] { child }, ((ILogical)target).LogicalChildren.ToList());
}
public void Adding_To_Logical_Tree_Should_Reevaluate_DataTemplates()
{
var target = new ContentPresenter
{
Content = "Foo",
};
target.ApplyTemplate();
Assert.IsType<TextBlock>(target.Child);
var root = new TestRoot
{
DataTemplates = new DataTemplates
{
new FuncDataTemplate<string>(x => new Decorator()),
},
};
root.Child = target;
target.ApplyTemplate();
Assert.IsType<Decorator>(target.Child);
}
public void Setting_Content_To_String_Should_Create_TextBlock()
{
var target = new ContentPresenter();
target.Content = "Foo";
// Child should not update until ApplyTemplate called.
Assert.Null(target.Child);
target.ApplyTemplate();
Assert.IsType<TextBlock>(target.Child);
Assert.Equal("Foo", ((TextBlock)target.Child).Text);
}
public void Setting_Content_To_Control_Should_Set_Child()
{
var target = new ContentPresenter();
var child = new Border();
target.Content = child;
// Child should not update until ApplyTemplate called.
Assert.Null(target.Child);
target.ApplyTemplate();
Assert.Equal(child, target.Child);
}
