System.Data.Tests.DataColumnTest2.SetOrdinalTest C# (CSharp) Method

        public void SetOrdinalTest()
        {
            DataColumn col = new DataColumn("col", typeof(int));
            try
            {
                col.SetOrdinal(2);
                Assert.False(true);
            }
            catch (ArgumentException e) { }

            DataTable table = new DataTable();
            DataColumn col1 = table.Columns.Add("col1", typeof(int));
            DataColumn col2 = table.Columns.Add("col2", typeof(int));
            DataColumn col3 = table.Columns.Add("col3", typeof(int));

            Assert.Equal("col1", table.Columns[0].ColumnName);
            Assert.Equal("col3", table.Columns[2].ColumnName);

            table.Columns[0].SetOrdinal(2);
            Assert.Equal("col2", table.Columns[0].ColumnName);
            Assert.Equal("col1", table.Columns[2].ColumnName);

            Assert.Equal(0, col2.Ordinal);
            Assert.Equal(1, col3.Ordinal);
            Assert.Equal(2, col1.Ordinal);

            try
            {
                table.Columns[0].SetOrdinal(-1);
                Assert.False(true);
            }
            catch (ArgumentOutOfRangeException e) { }

            try
            {
                table.Columns[0].SetOrdinal(4);
                Assert.False(true);
            }
            catch (ArgumentOutOfRangeException e) { }
        }
        [Fact]