nixpkgs/nixos/tests/misc.nix
Luke Granger-Brown b5a328e58f nixos/tests/misc: account for cgroupv2
Since #104094 (d22b3ed4bc), NixOS is
using the unified cgroup hierarchy by default (aka cgroupv2).

This means the blkio controller isn't there, so we should test for
something else (e.g. the presence of the io controller).

Fixes #105581.
2020-12-01 17:36:04 +01:00

163 lines
6.2 KiB
Nix

# Miscellaneous small tests that don't warrant their own VM run.
import ./make-test-python.nix ({ pkgs, ...} : rec {
name = "misc";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ eelco ];
};
foo = pkgs.writeText "foo" "Hello World";
machine =
{ lib, ... }:
with lib;
{ swapDevices = mkOverride 0
[ { device = "/root/swapfile"; size = 128; } ];
environment.variables.EDITOR = mkOverride 0 "emacs";
documentation.nixos.enable = mkOverride 0 true;
systemd.tmpfiles.rules = [ "d /tmp 1777 root root 10d" ];
fileSystems = mkVMOverride { "/tmp2" =
{ fsType = "tmpfs";
options = [ "mode=1777" "noauto" ];
};
# Tests https://discourse.nixos.org/t/how-to-make-a-derivations-executables-have-the-s-permission/8555
"/user-mount/point" = {
device = "/user-mount/source";
fsType = "none";
options = [ "bind" "rw" "user" "noauto" ];
};
"/user-mount/denied-point" = {
device = "/user-mount/denied-source";
fsType = "none";
options = [ "bind" "rw" "noauto" ];
};
};
systemd.automounts = singleton
{ wantedBy = [ "multi-user.target" ];
where = "/tmp2";
};
users.users.sybil = { isNormalUser = true; group = "wheel"; };
users.users.alice = { isNormalUser = true; };
security.sudo = { enable = true; wheelNeedsPassword = false; };
boot.kernel.sysctl."vm.swappiness" = 1;
boot.kernelParams = [ "vsyscall=emulate" ];
system.extraDependencies = [ foo ];
};
testScript =
''
import json
def get_path_info(path):
result = machine.succeed(f"nix path-info --json {path}")
parsed = json.loads(result)
return parsed
with subtest("nix-db"):
info = get_path_info("${foo}")
if (
info[0]["narHash"]
!= "sha256:0afw0d9j1hvwiz066z93jiddc33nxg6i6qyp26vnqyglpyfivlq5"
):
raise Exception("narHash not set")
if info[0]["narSize"] != 128:
raise Exception("narSize not set")
with subtest("nixos-version"):
machine.succeed("[ `nixos-version | wc -w` = 2 ]")
with subtest("nixos-rebuild"):
assert "NixOS module" in machine.succeed("nixos-rebuild --help")
with subtest("Sanity check for uid/gid assignment"):
assert "4" == machine.succeed("id -u messagebus").strip()
assert "4" == machine.succeed("id -g messagebus").strip()
assert "users:x:100:" == machine.succeed("getent group users").strip()
with subtest("Regression test for GMP aborts on QEMU."):
machine.succeed("expr 1 + 2")
with subtest("the swap file got created"):
machine.wait_for_unit("root-swapfile.swap")
machine.succeed("ls -l /root/swapfile | grep 134217728")
with subtest("whether kernel.poweroff_cmd is set"):
machine.succeed('[ -x "$(cat /proc/sys/kernel/poweroff_cmd)" ]')
with subtest("whether the io cgroupv2 controller is properly enabled"):
machine.succeed("grep -q '\\bio\\b' /sys/fs/cgroup/cgroup.controllers")
with subtest("whether we have a reboot record in wtmp"):
machine.shutdown
machine.wait_for_unit("multi-user.target")
machine.succeed("last | grep reboot >&2")
with subtest("whether we can override environment variables"):
machine.succeed('[ "$EDITOR" = emacs ]')
with subtest("whether hostname (and by extension nss_myhostname) works"):
assert "machine" == machine.succeed("hostname").strip()
assert "machine" == machine.succeed("hostname -s").strip()
with subtest("whether systemd-udevd automatically loads modules for our hardware"):
machine.succeed("systemctl start systemd-udev-settle.service")
machine.wait_for_unit("systemd-udev-settle.service")
assert "mousedev" in machine.succeed("lsmod")
with subtest("whether systemd-tmpfiles-clean works"):
machine.succeed(
"touch /tmp/foo", "systemctl start systemd-tmpfiles-clean", "[ -e /tmp/foo ]"
)
# move into the future
machine.succeed(
'date -s "@$(($(date +%s) + 1000000))"',
"systemctl start systemd-tmpfiles-clean",
)
machine.fail("[ -e /tmp/foo ]")
with subtest("whether automounting works"):
machine.fail("grep '/tmp2 tmpfs' /proc/mounts")
machine.succeed("touch /tmp2/x")
machine.succeed("grep '/tmp2 tmpfs' /proc/mounts")
with subtest(
"Whether mounting by a user is possible with the `user` option in fstab (#95444)"
):
machine.succeed("mkdir -p /user-mount/source")
machine.succeed("touch /user-mount/source/file")
machine.succeed("chmod -R a+Xr /user-mount/source")
machine.succeed("mkdir /user-mount/point")
machine.succeed("chown alice:users /user-mount/point")
machine.succeed("su - alice -c 'mount /user-mount/point'")
machine.succeed("su - alice -c 'ls /user-mount/point/file'")
with subtest(
"Whether mounting by a user is denied without the `user` option in fstab"
):
machine.succeed("mkdir -p /user-mount/denied-source")
machine.succeed("touch /user-mount/denied-source/file")
machine.succeed("chmod -R a+Xr /user-mount/denied-source")
machine.succeed("mkdir /user-mount/denied-point")
machine.succeed("chown alice:users /user-mount/denied-point")
machine.fail("su - alice -c 'mount /user-mount/denied-point'")
with subtest("shell-vars"):
machine.succeed('[ -n "$NIX_PATH" ]')
with subtest("nix-db"):
machine.succeed("nix-store -qR /run/current-system | grep nixos-")
with subtest("Test sysctl"):
machine.wait_for_unit("systemd-sysctl.service")
assert "1" == machine.succeed("sysctl -ne vm.swappiness").strip()
machine.execute("sysctl vm.swappiness=60")
assert "60" == machine.succeed("sysctl -ne vm.swappiness").strip()
with subtest("Test boot parameters"):
assert "vsyscall=emulate" in machine.succeed("cat /proc/cmdline")
'';
})