From a5d2eced839fb8501f5c62e7045cf0f2536c051f Mon Sep 17 00:00:00 2001
From: Benedikt Peetz <benedikt.peetz@b-peetz.de>
Date: Fri, 2 Oct 2026 00:31:34 +0200
Subject: tests/default: Allow adding stuff to the default dns config

---
 tests/default.nix | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'tests/default.nix')

diff --git a/tests/default.nix b/tests/default.nix
index b9c3cbd..b679dc1 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -19,6 +19,18 @@
     name,
     # Node definition, like in a normal nixos vm test.
     nodes ? {},
+    # Extra DNS configuration with the node's config as input.
+    # Example:
+    # ```
+    # server1 = {config, ...}: {
+    #   "domain.example.org" = {
+    #     TXT = [ "test" ];
+    #    };
+    # };
+    # ```
+    # That will add the TXT record to the `domain.example.org` domain, the `config` will
+    # be from the `server1` node.
+    dns ? {},
     # Server domains that all clients and the server can resolve via dns.
     # The format follows the common one, e.g.:
     # `{nodeName = "domain.example.com";}`
@@ -37,7 +49,7 @@
     # Apparently the default's (e.g. `serivces ? []`), are not applied for the `@args`
     # syntax.
     args = {
-      inherit name nodes serverDomains testScript services ignore;
+      inherit name dns nodes serverDomains testScript services ignore;
     };
   in
     specialArgs.nixos-lib.runTest {
@@ -102,6 +114,15 @@
               builtins.listToAttrs (builtins.map mkDomain args.serverDomains);
           };
         }
+
+        (pkgs.lib.mapAttrs' (nodeName: dnsOverride: {
+            name = "name_server";
+            value = {nodes, ...}: {
+              vhack.dns.zones = dnsOverride {config = nodes."${nodeName}";};
+            };
+          })
+          args.dns)
+
         args.nodes
         (builtins.mapAttrs (_: _: {
             imports = [
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