How to write unit tests for dns-updates-allow-deny

[Andreas Schneider]

On Monday, June 20, 2022 1:43:51 AM CEST Matt Grant via samba-technical wrote:
> Hi!
> 
> Have a draft merge request up at:
> 
> https://gitlab.com/samba-team/samba/-/merge_requests/2271
> 
> I am looking for someone to help me get the unit tests written for merging
> into Samba 4.17 please. (Uri Simchoni, are you available again please?)
> 
> This has been around for some time, but I have finally got everything else
> to the point where I can get this done.
> 
> Main issue is that I need to be able to do DNS requests from different
> source addresses into the SAMBA_INTERNAL DNS server in the test hook up.
> Currently python/samba/tests/dns_forwarder.py only does them from 127.0.0.1
> or ::1.  Multiple sources are needed as the Samba test framework can only
> use a single smb.conf for a whole test run (as far as I understand it).
> 
> How can we get:
> 
> 1) multiple 192.168.x.x and IPv6 ULA addresses set up in the test framework?

The number of IP addresses is limited. The IP address used is determined by
SOCKET_WRAPPER_DEFAULT_IFACE.

If you change that variable, you will get a different IP address.

More details at:

https://gitlab.com/cwrap/socket_wrapper/-/blob/master/doc/socket_wrapper.
1.adoc

> 2) Create DNS requests from these addresses (probably simple once 1) is
> done)?

You can change the SOCKET_WRAPPER_DEFAULT_IFACE environment variable.


Note that several IP addresses are taken by different environments:

https://gitlab.com/samba-team/samba/-/blob/master/selftest/target/
Samba.pm#L596=


I hope that helps.


	Andreas

-- 
Andreas Schneider                      asn at samba.org
Samba Team                             www.samba.org
GPG-ID:     8DFF53E18F2ABC8D8F3C92237EE0FC4DCC014E3D