public void ValidCNPJShouldSplitTest(string value)
        {
            string number = CNPJ.GetNumberFrom(value);
            string digit  = CNPJ.GetCheckNumberFrom(value);
            var    cnpj   = new CNPJ(number + digit);

            Assert.That(cnpj == value);
            Assert.That(cnpj.Number, Is.EqualTo(number));
            Assert.That(cnpj.CheckNumber, Is.EqualTo(digit));
        }