public void DesignerActionItemCollection_CopyTo_Invoke_Success() { var collection = new DesignerActionItemCollection(); var value = new SubDesignerActionItem("displayName", "category", "description"); collection.Add(value); var array = new DesignerActionItem[3]; collection.CopyTo(array, 1); Assert.Equal(new DesignerActionItem[] { null, value, null }, array); }