System.Data.Tests.DataColumnCollectionTest.AddExceptions C# (CSharp) Method

        public void AddExceptions()
        {
            DataTable Table = new DataTable("test_table");
            DataTable Table2 = new DataTable("test_table2");
            DataColumnCollection Cols = Table.Columns;
            DataColumn C = null;

            try
            {
                Cols.Add(C);
                Assert.False(true);
            }
            catch (Exception e)
            {
                Assert.Equal(typeof(ArgumentNullException), e.GetType());
            }

            C = new DataColumn("test");
            Cols.Add(C);

            try
            {
                Cols.Add(C);
                Assert.False(true);
            }
            catch (ArgumentException e)
            {
                //				Assert.Equal (typeof (ArgumentException), e.GetType ());
                //				Assert.Equal ("Column 'test' already belongs to this or another DataTable.", e.Message);
            }

            try
            {
                Table2.Columns.Add(C);
                Assert.False(true);
            }
            catch (ArgumentException e)
            {
                //				Assert.Equal (typeof (ArgumentException), e.GetType ());
                //				Assert.Equal ("Column 'test' already belongs to this or another DataTable.", e.Message);
            }

            DataColumn C2 = new DataColumn("test");

            try
            {
                Cols.Add(C2);
                Assert.False(true);
            }
            catch (DuplicateNameException e)
            {
                //				Assert.Equal (typeof (DuplicateNameException), e.GetType ());
                //				Assert.Equal ("A DataColumn named 'test' already belongs to this DataTable.", e.Message);
            }

            try
            {
                Cols.Add("test2", typeof(string), "substring ('fdsafewq', 2)");
                Assert.False(true);
            }
            catch (InvalidExpressionException e)
            {
                //				Assert.True (e is InvalidExpressionException);
                //				Assert.Equal ("Expression 'substring ('fdsafewq', 2)' is invalid.", e.Message);
            }
        }