Unverified Commit 61425f10 authored by r-vdp's avatar r-vdp
Browse files

nixos/tests/incus: test config creation and switch-to-configuration 

Add subtests to verify the activation script replacements:
- config create service creates /etc/nixos/configuration.nix on first boot
- service does not overwrite existing configuration (ConditionPathExists)
- switch-to-configuration switch calls installBootLoader, creating /sbin/init
  (container-only, since VMs use a real bootloader)
parent 0f363a1c

nixos/tests/incus/incus-tests-module.nix

+25 −0
Original line number Diff line number Diff line
@@ -156,6 +156,16 @@ in 


                      server.succeed(f"incus exec {instance_name} -- test -e /dev/tpm0")

                      server.succeed(f"incus exec {instance_name} -- test -e /dev/tpmrm0")



                  with subtest("[${image_id}] default configuration.nix is created on first boot"):

                      server.succeed(f"incus exec {instance_name} -- test -f /etc/nixos/configuration.nix")



                  with subtest("[${image_id}] configuration.nix create service does not overwrite existing config"):

                      server.succeed(f"incus exec {instance_name} -- systemctl restart incus-create-nixos-config.service")

                      status = server.succeed(

                          f"incus exec {instance_name} -- systemctl show -p ActiveState incus-create-nixos-config.service"

                      ).strip()

                      assert "inactive" in status, f"Expected inactive (ConditionPathExists should prevent start), got {status}"

                ''

                #

                # container specific
@@ -164,6 +174,21 @@ in 
                  lib.optionalString (config.type == "container")

                    # python

                    ''

                      with subtest("[${image_id}] switch-to-configuration updates /sbin/init via installBootLoader"):

                          # Remove /sbin/init so we can verify installBootLoader recreates it

                          server.succeed(f"incus exec {instance_name} -- rm -f /sbin/init")

                          server.fail(f"incus exec {instance_name} -- test -e /sbin/init")



                          server.succeed(

                              f"incus exec {instance_name} -- /run/current-system/bin/switch-to-configuration switch"

                          )



                          # Verify installBootLoader recreated /sbin/init pointing to the system's init

                          server.succeed(f"incus exec {instance_name} -- test -x /sbin/init")

                          target = server.succeed(f"incus exec {instance_name} -- readlink -f /sbin/init").strip()

                          current = server.succeed(f"incus exec {instance_name} -- readlink -f /run/current-system/init").strip()

                          assert target == current, f"/sbin/init -> {target}, expected {current}"



                      # TODO troubleshoot VM hot memory resizing which was introduced in 6.12

                      with subtest("[${image_id}] memory limits can be hotplug changed"):

                          server.set_instance_config(instance_name, "limits.memory 512MB")