public void LayoutGroupMeasureChildren() { tlog.Debug(tag, $"LayoutGroupMeasureChildren START"); flagOnMeasureChild = false; Assert.False(flagOnMeasureChild, "flagOnMeasureChild should be false initially"); var testingTarget = new MyLayoutGroup(); Assert.IsNotNull(testingTarget, "null handle"); Assert.IsInstanceOf <LayoutGroup>(testingTarget, "Should be an instance of LayoutGroup type."); View view = new View() { ExcludeLayouting = false, Size = new Size(100, 150) }; using (LayoutItem child = new LayoutItem()) { child.AttachToOwner(view); testingTarget.Add(child); MeasureSpecification measureWidth = new MeasureSpecification(new LayoutLength(50.0f), MeasureSpecification.ModeType.Exactly); MeasureSpecification measureHeight = new MeasureSpecification(new LayoutLength(50.0f), MeasureSpecification.ModeType.Exactly); testingTarget.MeasureChildrenTest(measureWidth, measureHeight); Assert.True(flagOnMeasureChild, "LayoutGroup MeasureChild method not invoked when children measured."); } testingTarget.Dispose(); tlog.Debug(tag, $"LayoutGroupMeasureChildren END (OK)"); }