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nixos/containers-tmpfs: Port test to python

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This commit is contained in:
Jacek Galowicz 2019-11-25 21:58:20 +01:00
parent da39d2be5a
commit ab374b3056
1 changed files with 51 additions and 37 deletions
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88
nixos/tests/containers-tmpfs.nix
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@ -1,6 +1,6 @@
# Test for NixOS' container support.
import ./make-test.nix ({ pkgs, ...} : {
import ./make-test-python.nix ({ pkgs, ...} : {
name = "containers-tmpfs";
meta = with pkgs.stdenv.lib.maintainers; {
maintainers = [ kampka ];
@ -31,49 +31,63 @@ import ./make-test.nix ({ pkgs, ...} : {
virtualisation.pathsInNixDB = [ pkgs.stdenv ];
};
testScript =
''
$machine->waitForUnit("default.target");
$machine->succeed("nixos-container list") =~ /tmpfs/ or die;
testScript = ''
machine.wait_for_unit("default.target")
assert "tmpfs" in machine.succeed("nixos-container list")
# Start the tmpfs container.
#$machine->succeed("nixos-container status tmpfs") =~ /up/ or die;
# Verify that /var is mounted as a tmpfs
#$machine->succeed("nixos-container run tmpfs -- systemctl status var.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
$machine->succeed("nixos-container run tmpfs -- mountpoint -q /var 2>/dev/null");
# Verify that /var/log is mounted as a tmpfs
$machine->succeed("nixos-container run tmpfs -- systemctl status var-log.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
$machine->succeed("nixos-container run tmpfs -- mountpoint -q /var/log 2>/dev/null");
# Verify that /some/random/path is mounted as a tmpfs
$machine->succeed("nixos-container run tmpfs -- systemctl status some-random-path.mount --no-pager 2>/dev/null") =~ /What: tmpfs/ or die;
$machine->succeed("nixos-container run tmpfs -- mountpoint -q /some/random/path 2>/dev/null");
# Verify that files created in the container in a non-tmpfs directory are visible on the host.
# This establishes legitimacy for the following tests
$machine->succeed("nixos-container run tmpfs -- touch /root/test.file 2>/dev/null");
$machine->succeed("nixos-container run tmpfs -- ls -l /root | grep -q test.file 2>/dev/null");
$machine->succeed("test -e /var/lib/containers/tmpfs/root/test.file");
with subtest("tmpfs container is up"):
assert "up" in machine.succeed("nixos-container status tmpfs")
# Verify that /some/random/path is writable and that files created there
# are not in the hosts container dir but in the tmpfs
$machine->succeed("nixos-container run tmpfs -- touch /some/random/path/test.file 2>/dev/null");
$machine->succeed("nixos-container run tmpfs -- test -e /some/random/path/test.file 2>/dev/null");
def tmpfs_cmd(command):
return f"nixos-container run tmpfs -- {command} 2>/dev/null"
$machine->fail("test -e /var/lib/containers/tmpfs/some/random/path/test.file");
# Verify that 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");
with subtest("/var is mounted as a tmpfs"):
machine.succeed(tmpfs_cmd("mountpoint -q /var"))
$machine->succeed("test -e /var/lib/containers/tmpfs/var/test.file");
$machine->succeed("ls -l /var/lib/containers/tmpfs/var/ | grep -q test.file 2>/dev/null");
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"))
$machine->fail("nixos-container run tmpfs -- ls -l /var | grep -q test.file 2>/dev/null");
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"))
'';
})