public void Inserting_Column_Sets_Header() { using (var wb = new XLWorkbook()) { IXLWorksheet ws = wb.AddWorksheet("Sheet1"); ws.FirstCell().SetValue("Categories") .CellBelow().SetValue("A") .CellBelow().SetValue("B") .CellBelow().SetValue("C"); IXLTable table = ws.RangeUsed().CreateTable(); table.InsertColumnsAfter(1); Assert.AreEqual("Column2", table.HeadersRow().LastCell().GetString()); } }