add mastodon test to CI

.forgejo/workflows/ci.yaml

@@ -21,11 +21,17 @@ jobs:
       - uses: actions/checkout@v4
       - run: nix-shell --run 'nix-unit ./deployment/data-model-test.nix'
 
+  check-mastodon:
+    runs-on: native
+    steps:
+      - uses: actions/checkout@v4
+      - run: nix build .#checks.x86_64-linux.test-mastodon-service -L
+
   check-peertube:
     runs-on: native
     steps:
       - uses: actions/checkout@v4
-      - run: nix-build services -A tests.peertube
+      - run: nix build .#checks.x86_64-linux.test-peertube-service -L
 
   check-panel:
     runs-on: native

services/tests/mastodon.nix

@@ -6,7 +6,7 @@
 { pkgs, ... }:
 
 let
-  lib = pkgs.lib;
+  inherit (pkgs) lib writeText;
 
   ## FIXME: this binding was not used, but maybe we want a side-effect or something?
   # rebuildableTest = import ./rebuildableTest.nix pkgs;
@@ -72,6 +72,14 @@ in
           AWS_ACCESS_KEY_ID = "$(cat ${config.fediversity.mastodon.s3AccessKeyFile})";
           AWS_SECRET_ACCESS_KEY = "$(cat ${config.fediversity.mastodon.s3SecretKeyFile})";
         };
+        services.mastodon.extraEnvFiles = [
+          # generate as: cd ${pkgs.mastodon}; IGNORE_ALREADY_SET_SECRETS=true RAILS_ENV=development ${pkgs.mastodon}/bin/rails db:encryption:init
+          (writeText "rest" ''
+            ACTIVE_RECORD_ENCRYPTION_DETERMINISTIC_KEY=naGoEzeyjUmwIlmgZZmGQDWJrlWud5eX
+            ACTIVE_RECORD_ENCRYPTION_KEY_DERIVATION_SALT=A0tE1VJ7S3cjaOQ58mNkhrVFY7o5NKDB
+            ACTIVE_RECORD_ENCRYPTION_PRIMARY_KEY=tGHhd5Os7hLxa8QTzWwjyVLrvsj5VsCw
+          '')
+        ];
       };
   };