protected static void CheckPrefixPacket(
DHCPv6Packet result, DHCPv6PacketTypes type, DHCPv6PrefixDelegation prefixDelegation)
{
Assert.NotNull(result);
Assert.NotEqual(DHCPv6Packet.Empty, result);
Assert.True(result.IsValid);
Assert.Equal(type, result.PacketType);
var iaOption = result.GetPrefixDelegationIdentiyAssocation(prefixDelegation.IdentityAssociation);
Assert.NotNull(iaOption);
var uncastedSuboption = iaOption.Suboptions.First();
Assert.NotNull(uncastedSuboption);
Assert.IsAssignableFrom <DHCPv6PacketIdentityAssociationPrefixDelegationSuboption>(uncastedSuboption);
var addressSubOption = (DHCPv6PacketIdentityAssociationPrefixDelegationSuboption)uncastedSuboption;
Assert.Equal(prefixDelegation.Mask.Identifier, addressSubOption.PrefixLength);
Assert.Equal(prefixDelegation.NetworkAddress, addressSubOption.Address);
Assert.NotEmpty(addressSubOption.Suboptions);
Assert.Single(addressSubOption.Suboptions);
var uncastedSubSuboption = addressSubOption.Suboptions.First();
Assert.NotNull(uncastedSubSuboption);
Assert.IsAssignableFrom <DHCPv6PacketStatusCodeSuboption>(uncastedSubSuboption);
var statusSubOption = (DHCPv6PacketStatusCodeSuboption)uncastedSubSuboption;
Assert.Equal((UInt16)DHCPv6StatusCodes.Success, statusSubOption.StatusCode);
Assert.False(String.IsNullOrEmpty(statusSubOption.Message));
}