nixos/tests/postfix-tlspol: init

Simple test if the service comes up and the CLI can interact with it and
gives reasonable results.

(cherry picked from commit 2288aab12d)

nixos/tests/all-tests.nix

@@ -1086,6 +1086,7 @@ in
     handleTest ./postfix-raise-smtpd-tls-security-level.nix
       { };
   postfixadmin = handleTest ./postfixadmin.nix { };
+  postfix-tlspol = runTest ./postfix-tlspol.nix;
   postgres-websockets = runTest ./postgres-websockets.nix;
   postgresql = handleTest ./postgresql { };
   postgrest = runTest ./postgrest.nix;

nixos/tests/postfix-tlspol.nix

@@ -0,0 +1,29 @@
+{
+  lib,
+  ...
+}:
+{
+  name = "postfix-tlspol";
+
+  meta.maintainers = with lib.maintainers; [ hexa ];
+
+  nodes.machine = {
+    services.postfix-tlspol.enable = true;
+  };
+
+  enableOCR = true;
+
+  testScript = ''
+    import json
+
+    machine.wait_for_unit("postfix-tlspol.service")
+
+    with subtest("Interact with the service"):
+      machine.succeed("postfix-tlspol -purge")
+
+      response = json.loads((machine.succeed("postfix-tlspol -query localhost")))
+      machine.log(json.dumps(response, indent=2))
+
+  '';
+
+}

pkgs/by-name/po/postfix-tlspol/package.nix

@@ -2,6 +2,7 @@
   lib,
   buildGoModule,
   fetchFromGitHub,
+  nixosTests,
 }:
 
 buildGoModule rec {
@@ -22,6 +23,10 @@ buildGoModule rec {
 
   ldflags = [ "-X main.Version=${version}" ];
 
+  passthru.tests = {
+    inherit (nixosTests) postfix-tlspol;
+  };
+
   meta = {
     description = "Lightweight MTA-STS + DANE/TLSA resolver and TLS policy server for Postfix, prioritizing DANE.";
     homepage = "https://github.com/Zuplu/postfix-tlspol";