public void TestGenerateIPNetworkAddress() { var ipAddressHelper = new IPAddressHelper(); var ipNetworkAddress = ipAddressHelper.GenerateIPNetworkAddress(); var ipRegex = new Regex(@"\b\d{1,3}\.\d{1,3}\.\d{1,3}\b"); var isMatch = ipRegex.IsMatch(ipNetworkAddress); Assert.IsTrue(isMatch); }