test: Install standard metapackage

Author: dehnert

flake.nix

@@ -1,6 +1,8 @@
 {
   description = "MIT Athena packaging for Nix";
+
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
   outputs = { self, nixpkgs }:
     let
       systems = [
@@ -14,9 +16,32 @@
       forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
     in
     {
-      legacyPackages = forAllSystems (system: import ./default.nix {
+      legacyPackages = forAllSystems (system: let
         pkgs = import nixpkgs { inherit system; };
+      in (import ./default.nix {
+        pkgs = import nixpkgs { inherit system; };
+      }) // rec {
+        # This lets you pick the driver function
+        test-infra = {
+	  metaStandardTest = pkgs.callPackage ./test/meta-standard.nix { inherit self system; };
+        };
+        # This is what should actually get run
+        test = {
+          # `nix run '.#test.meta-standard'` to run this test
+          # It requires network (for hesiod and AFS access), so we can't run
+          # it in `checks` and need to explicitly choose `.driver` -- the
+          # default apparently blocks network.
+          meta-standard = test-infra.metaStandardTest.driver;
+        };
       });
       packages = forAllSystems (system: nixpkgs.lib.filterAttrs (_: v: nixpkgs.lib.isDerivation v) self.legacyPackages.${system});
+
+
+      checks = forAllSystems (system: let
+	  pkgs = nixpkgs.legacyPackages.${system};
+        in {
+          # Add things here if we ever get anything that doesn't need network
+        }
+      );
     };
 }

test/meta-standard.nix

@@ -0,0 +1,28 @@
+# From https://blakesmith.me/2024/03/02/running-nixos-tests-with-flakes.html
+{ self, pkgs, system, }:
+
+let
+  nixathena = self.legacyPackages.${system};
+in
+
+pkgs.nixosTest {
+  name = "meta-standard";
+  nodes.machine = { config, pkgs, ... }: {
+    imports = [
+      nixathena.modules.meta.standard
+    ];
+    nixathena.meta.standard.enable = true;
+  };
+
+  testScript = ''
+    machine.wait_for_unit("pyhesiodfs.service")
+    # network-online.service is too long to wait
+    # afsd.service is (seemingly) long enough to have network
+    machine.wait_for_unit("afsd.service")
+    machine.succeed("ping -c1 ipv4.google.com")
+    [status, out] = machine.execute("ping -c1 google.com")
+    print(out)
+    machine.succeed('ls /afs/athena.mit.edu/')
+    machine.succeed('test -e /mit/sipb/README')
+  '';
+}