public void Attaching_Control_To_Tree_Invalidates_Parent_Measure() { var target = new Mock <ILayoutManager>(); var control = new Decorator(); var root = new LayoutTestRoot { Child = control, LayoutManager = target.Object, }; root.Measure(Size.Infinity); root.Arrange(new Rect(root.DesiredSize)); Assert.True(control.IsMeasureValid); root.Child = null; root.Measure(Size.Infinity); root.Arrange(new Rect(root.DesiredSize)); Assert.False(control.IsMeasureValid); Assert.True(root.IsMeasureValid); target.ResetCalls(); root.Child = control; Assert.False(root.IsMeasureValid); Assert.False(control.IsMeasureValid); target.Verify(x => x.InvalidateMeasure(root), Times.Once()); }
public void Only_Calls_LayoutManager_InvalidateArrange_Once() { var target = new Mock <ILayoutManager>(); var control = new Decorator(); var root = new LayoutTestRoot { Child = control, LayoutManager = target.Object, }; root.Measure(Size.Infinity); root.Arrange(new Rect(root.DesiredSize)); target.ResetCalls(); control.InvalidateArrange(); control.InvalidateArrange(); target.Verify(x => x.InvalidateArrange(control), Times.Once()); }