add minecraft test

flake.nix

@@ -225,7 +225,7 @@
       packages.${system} =
         let
           testSuite = import ./tests/tests.nix {
-            inherit pkgs lib;
+            inherit pkgs lib inputs;
             config = self.nixosConfigurations.muffin.config;
           };
         in

tests/minecraft.nix

@@ -0,0 +1,118 @@
+{
+  config,
+  lib,
+  pkgs,
+  inputs,
+  ...
+}:
+let
+  # Create pkgs with nix-minecraft overlay and unfree packages allowed
+  testPkgs = import inputs.nixpkgs {
+    system = pkgs.system;
+    config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "minecraft-server" ];
+    overlays = [ inputs.nix-minecraft.overlay ];
+  };
+
+  # Create a wrapper module that imports the actual minecraft service
+  minecraftService =
+    { config, ... }:
+    let
+      # Import the minecraft service configuration
+      serviceConfig = import ../services/minecraft.nix {
+        inherit lib config;
+        pkgs = testPkgs;
+        service_configs = {
+          minecraft = {
+            server_name = "main";
+            parent_dir = "/var/lib/minecraft";
+          };
+          https = {
+            domain = "test.local";
+          };
+        };
+        username = "testuser";
+      };
+    in
+    {
+      imports = [ serviceConfig ];
+      # Override nixpkgs config to prevent conflicts in test environment
+      nixpkgs.config = lib.mkForce {
+        allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [ "minecraft-server" ];
+      };
+    };
+in
+testPkgs.testers.runNixOSTest {
+  name = "minecraft server startup test";
+
+  nodes.machine =
+    { ... }:
+    {
+      imports = [
+        inputs.nix-minecraft.nixosModules.minecraft-servers
+        minecraftService
+      ];
+
+      # Enable caddy service (required by minecraft service)
+      services.caddy.enable = true;
+
+      # Disable the ZFS mount dependency service in test environment
+      systemd.services."minecraft-server-main_mounts".enable = lib.mkForce false;
+
+      # Remove service dependencies that require ZFS
+      systemd.services.minecraft-server-main = {
+        wants = lib.mkForce [ ];
+        after = lib.mkForce [ ];
+        requires = lib.mkForce [ ];
+      };
+
+      # Test-specific overrides only - reduce memory for testing
+      services.minecraft-servers.servers.main.jvmOpts = lib.mkForce "-Xmx1G -Xms1G";
+
+      # Create test user
+      users.users.testuser = {
+        isNormalUser = true;
+        uid = 1000;
+        extraGroups = [ "minecraft" ];
+      };
+    };
+
+  testScript = ''
+    start_all()
+    machine.wait_for_unit("multi-user.target")
+
+    # Wait for minecraft service to be available
+    machine.wait_for_unit("minecraft-server-main.service")
+
+    # Check that the service is active and not failed
+    machine.succeed("systemctl is-active minecraft-server-main.service")
+
+    # Wait for the server to fully start up - minecraft with mods can take longer
+    machine.sleep(60)
+
+    # Verify the service hasn't crashed after startup
+    machine.succeed("systemctl is-active minecraft-server-main.service")
+
+    # Check that the minecraft process is running
+    machine.succeed("pgrep -f minecraft")
+
+    # Verify the server port is listening
+    machine.wait_for_open_port(25565)
+
+    # Check that minecraft data directory was created
+    machine.succeed("test -d /var/lib/minecraft/main")
+
+    # Verify server.properties was created
+    machine.succeed("test -f /var/lib/minecraft/main/server.properties")
+
+    # Check that mods directory exists and contains the expected mods
+    machine.succeed("test -d /var/lib/minecraft/main/mods")
+    machine.succeed("ls /var/lib/minecraft/main/mods | grep -q fabric-api")
+    machine.succeed("ls /var/lib/minecraft/main/mods | grep -q ferritecore")
+    machine.succeed("ls /var/lib/minecraft/main/mods | grep -q lithium")
+
+    # Check that there are no critical errors in the logs
+    machine.succeed("! journalctl -u minecraft-server-main.service --no-pager | grep -i 'error\\|exception\\|failed'")
+
+    print("Minecraft server with specific mods started successfully!")
+  '';
+}

tests/tests.nix

@@ -3,11 +3,12 @@
   lib,
   pkgs,
   ...
-}:
+}@args:
 let
-  handleTest = file: import file { inherit config lib pkgs; };
+  handleTest = file: import file (args);
 in
 {
   zfsTest = handleTest ./zfs.nix;
   testTest = handleTest ./testTest.nix;
+  minecraftTest = handleTest ./minecraft.nix;
 }