93 lines
3.1 KiB
Nix
93 lines
3.1 KiB
Nix
# Test for NixOS' container support.
|
|
|
|
import ./make-test-python.nix ({ pkgs, ...} : {
|
|
name = "containers-tmpfs";
|
|
meta = with pkgs.stdenv.lib.maintainers; {
|
|
maintainers = [ kampka ];
|
|
};
|
|
|
|
machine =
|
|
{ pkgs, ... }:
|
|
{ imports = [ ../modules/installer/cd-dvd/channel.nix ];
|
|
virtualisation.writableStore = true;
|
|
virtualisation.memorySize = 768;
|
|
|
|
containers.tmpfs =
|
|
{
|
|
autoStart = true;
|
|
tmpfs = [
|
|
# Mount var as a tmpfs
|
|
"/var"
|
|
|
|
# Add a nested mount inside a tmpfs
|
|
"/var/log"
|
|
|
|
# Add a tmpfs on a path that does not exist
|
|
"/some/random/path"
|
|
];
|
|
config = { };
|
|
};
|
|
|
|
virtualisation.pathsInNixDB = [ pkgs.stdenv ];
|
|
};
|
|
|
|
testScript = ''
|
|
machine.wait_for_unit("default.target")
|
|
assert "tmpfs" in machine.succeed("nixos-container list")
|
|
|
|
with subtest("tmpfs container is up"):
|
|
assert "up" in machine.succeed("nixos-container status tmpfs")
|
|
|
|
|
|
def tmpfs_cmd(command):
|
|
return f"nixos-container run tmpfs -- {command} 2>/dev/null"
|
|
|
|
|
|
with subtest("/var is mounted as a tmpfs"):
|
|
machine.succeed(tmpfs_cmd("mountpoint -q /var"))
|
|
|
|
with subtest("/var/log is mounted as a tmpfs"):
|
|
assert "What: tmpfs" in machine.succeed(
|
|
tmpfs_cmd("systemctl status var-log.mount --no-pager")
|
|
)
|
|
machine.succeed(tmpfs_cmd("mountpoint -q /var/log"))
|
|
|
|
with subtest("/some/random/path is mounted as a tmpfs"):
|
|
assert "What: tmpfs" in machine.succeed(
|
|
tmpfs_cmd("systemctl status some-random-path.mount --no-pager")
|
|
)
|
|
machine.succeed(tmpfs_cmd("mountpoint -q /some/random/path"))
|
|
|
|
with subtest(
|
|
"files created in the container in a non-tmpfs directory are visible on the host."
|
|
):
|
|
# This establishes legitimacy for the following tests
|
|
machine.succeed(
|
|
tmpfs_cmd("touch /root/test.file"),
|
|
tmpfs_cmd("ls -l /root | grep -q test.file"),
|
|
"test -e /var/lib/containers/tmpfs/root/test.file",
|
|
)
|
|
|
|
with subtest(
|
|
"/some/random/path is writable and that files created there are not "
|
|
+ "in the hosts container dir but in the tmpfs"
|
|
):
|
|
machine.succeed(
|
|
tmpfs_cmd("touch /some/random/path/test.file"),
|
|
tmpfs_cmd("test -e /some/random/path/test.file"),
|
|
)
|
|
machine.fail("test -e /var/lib/containers/tmpfs/some/random/path/test.file")
|
|
|
|
with subtest(
|
|
"files created in the hosts container dir in a path where a tmpfs "
|
|
+ "file system has been mounted are not visible to the container as "
|
|
+ "the do not exist in the tmpfs"
|
|
):
|
|
machine.succeed(
|
|
"touch /var/lib/containers/tmpfs/var/test.file",
|
|
"test -e /var/lib/containers/tmpfs/var/test.file",
|
|
"ls -l /var/lib/containers/tmpfs/var/ | grep -q test.file 2>/dev/null",
|
|
)
|
|
machine.fail(tmpfs_cmd("ls -l /var | grep -q test.file"))
|
|
'';
|
|
})
|