public void TestMethod_AllColumnsUntil_0()
        {
            const int     source   = 0;
            List <string> expected = new List <string>();
            List <string> result   = FunctionsExcel.AllColumnsNameUntil(source);

            CollectionAssert.AreEqual(result, expected);
        }
        public void TestMethod_AllColumnsUntil_28()
        {
            const int     source   = 28;
            List <string> expected = new List <string>
            {
                "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "AA", "AB"
            };

            List <string> result = FunctionsExcel.AllColumnsNameUntil(source);

            CollectionAssert.AreEquivalent(result, expected);
        }
        public void TestMethod_AllColumnsUntil_72()
        {
            const int     source   = 72;
            List <string> expected = new List <string>
            {
                "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "AA", "AB", "AC", "AD", "AE", "AF", "AG", "AH", "AI", "AJ", "AK", "AL", "AM", "AN", "AO", "AP", "AQ", "AR", "AS", "AT", "AU", "AV", "AW", "AX", "AY", "AZ", "BA", "BB", "BC", "BD", "BE", "BF", "BG", "BH", "BI", "BJ", "BK", "BL", "BM", "BN", "BO", "BP", "BQ", "BR", "BS", "BT"
            };

            List <string> result = FunctionsExcel.AllColumnsNameUntil(source);

            CollectionAssert.AreEquivalent(result, expected);
        }
        public void TestMethod_AllColumnsUntil_2()
        {
            const int     source   = 2;
            List <string> expected = new List <string>
            {
                "A", "B"
            };

            List <string> result = FunctionsExcel.AllColumnsNameUntil(source);

            CollectionAssert.AreEquivalent(result, expected);
        }