pyrox.dev
1# Test for NixOS' container support.
2
3import ./make-test.nix ({ pkgs, ...} : {
4 name = "containers-tmpfs";
5 meta = with pkgs.stdenv.lib.maintainers; {
6 maintainers = [ ckampka ];
7 };
8
9 machine =
10 { pkgs, ... }:
11 { imports = [ ../modules/installer/cd-dvd/channel.nix ];
12 virtualisation.writableStore = true;
13 virtualisation.memorySize = 768;
14
15 containers.tmpfs =
16 {
17 autoStart = true;
18 tmpfs = [
19 # Mount var as a tmpfs
20 "/var"
21
22 # Add a nested mount inside a tmpfs
23 "/var/log"
24
25 # Add a tmpfs on a path that does not exist
26 "/some/random/path"
27 ];
28 config = { };
29 };
30
31 virtualisation.pathsInNixDB = [ pkgs.stdenv ];
32 };
33
34 testScript =
35 ''
36 $machine->waitForUnit("default.target");
37 $machine->succeed("nixos-container list") =~ /tmpfs/ or die;
38
39 # Start the tmpfs container.
40 #$machine->succeed("nixos-container status tmpfs") =~ /up/ or die;
41
42 # Verify that /var is mounted as a tmpfs
43 #$machine->succeed("nixos-container run tmpfs -- systemctl status var.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
44 $machine->succeed("nixos-container run tmpfs -- mountpoint -q /var 2>/dev/null");
45
46 # Verify that /var/log is mounted as a tmpfs
47 $machine->succeed("nixos-container run tmpfs -- systemctl status var-log.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
48 $machine->succeed("nixos-container run tmpfs -- mountpoint -q /var/log 2>/dev/null");
49
50 # Verify that /some/random/path is mounted as a tmpfs
51 $machine->succeed("nixos-container run tmpfs -- systemctl status some-random-path.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
52 $machine->succeed("nixos-container run tmpfs -- mountpoint -q /some/random/path 2>/dev/null");
53
54 # Verify that files created in the container in a non-tmpfs directory are visible on the host.
55 # This establishes legitimacy for the following tests
56 $machine->succeed("nixos-container run tmpfs -- touch /root/test.file 2>/dev/null");
57 $machine->succeed("nixos-container run tmpfs -- ls -l /root | grep -q test.file 2>/dev/null");
58 $machine->succeed("test -e /var/lib/containers/tmpfs/root/test.file");
59
60
61 # Verify that /some/random/path is writable and that files created there
62 # are not in the hosts container dir but in the tmpfs
63 $machine->succeed("nixos-container run tmpfs -- touch /some/random/path/test.file 2>/dev/null");
64 $machine->succeed("nixos-container run tmpfs -- test -e /some/random/path/test.file 2>/dev/null");
65
66 $machine->fail("test -e /var/lib/containers/tmpfs/some/random/path/test.file");
67
68 # Verify that files created in the hosts container dir in a path where a tmpfs file system has been mounted
69 # are not visible to the container as the do not exist in the tmpfs
70 $machine->succeed("touch /var/lib/containers/tmpfs/var/test.file");
71
72 $machine->succeed("test -e /var/lib/containers/tmpfs/var/test.file");
73 $machine->succeed("ls -l /var/lib/containers/tmpfs/var/ | grep -q test.file 2>/dev/null");
74
75 $machine->fail("nixos-container run tmpfs -- ls -l /var | grep -q test.file 2>/dev/null");
76
77 '';
78
79})