System.Data.Tests.ConstraintCollectionTest2.RemoveTest C# (CSharp) Метод

        public void RemoveTest()
        {
            DataTable table = new DataTable();
            table.Columns.Add("col1");
            Constraint c = table.Constraints.Add("c", table.Columns[0], false);
            Assert.Throws<ArgumentException>(() => table.Constraints.Remove("sdfs"));

            table.Constraints.Remove(c);
            Assert.Equal(0, table.Constraints.Count);

            // No exception shud be raised
            table.Constraints.Add(c);
            Assert.Equal(1, table.Constraints.Count);
        }
    }