push sheeet

nixos/tests/systemd-initrd-modprobe.nix

@@ -0,0 +1,27 @@
+{ lib, pkgs, ... }:
+{
+  name = "systemd-initrd-modprobe";
+
+  nodes.machine =
+    { pkgs, ... }:
+    {
+      testing.initrdBackdoor = true;
+      boot.initrd.systemd.enable = true;
+      boot.initrd.kernelModules = [ "tcp_hybla" ]; # Load module in initrd.
+      boot.extraModprobeConfig = ''
+        options tcp_hybla rtt0=42
+      '';
+    };
+
+  testScript = ''
+    machine.wait_for_unit("initrd.target")
+    rtt = machine.succeed("cat /sys/module/tcp_hybla/parameters/rtt0")
+    assert int(rtt) == 42, "Parameter should be respected for initrd kernel modules"
+
+    # Make sure it sticks in stage 2
+    machine.switch_root()
+    machine.wait_for_unit("multi-user.target")
+    rtt = machine.succeed("cat /sys/module/tcp_hybla/parameters/rtt0")
+    assert int(rtt) == 42, "Parameter should be respected for initrd kernel modules"
+  '';
+}