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nixosTests.systemd: port to Python #78241

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Jan 30, 2020
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nixosTests.systemd: port to Python #78241

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93 changes: 56 additions & 37 deletions nixos/tests/systemd.nix
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import ./make-test.nix ({ pkgs, ... }: {
import ./make-test-python.nix ({ pkgs, ... }: {
name = "systemd";

machine = { lib, ... }: {
Expand Down Expand Up @@ -53,50 +53,69 @@ import ./make-test.nix ({ pkgs, ... }: {
};

testScript = ''
$machine->waitForX;
import re
import subprocess

machine.wait_for_x()
# wait for user services
$machine->waitForUnit("default.target","alice");
machine.wait_for_unit("default.target", "alice")

# Regression test for https://github.com/NixOS/nixpkgs/issues/35415
subtest "configuration files are recognized by systemd", sub {
$machine->succeed('test -e /system_conf_read');
$machine->succeed('test -e /home/alice/user_conf_read');
$machine->succeed('test -z $(ls -1 /var/log/journal)');
};
with subtest("configuration files are recognized by systemd"):
machine.succeed("test -e /system_conf_read")
machine.succeed("test -e /home/alice/user_conf_read")
machine.succeed("test -z $(ls -1 /var/log/journal)")

# Regression test for https://github.com/NixOS/nixpkgs/issues/50273
subtest "DynamicUser actually allocates a user", sub {
$machine->succeed('systemd-run --pty --property=Type=oneshot --property=DynamicUser=yes --property=User=iamatest whoami | grep iamatest');
};
with subtest("DynamicUser actually allocates a user"):
assert "iamatest" in machine.succeed(
"systemd-run --pty --property=Type=oneshot --property=DynamicUser=yes --property=User=iamatest whoami"
)

# Regression test for https://github.com/NixOS/nixpkgs/issues/35268
subtest "file system with x-initrd.mount is not unmounted", sub {
$machine->succeed('mountpoint -q /test-x-initrd-mount');
$machine->shutdown;
system('qemu-img', 'convert', '-O', 'raw',
'vm-state-machine/empty2.qcow2', 'x-initrd-mount.raw');
my $extinfo = `${pkgs.e2fsprogs}/bin/dumpe2fs x-initrd-mount.raw`;
die "File system was not cleanly unmounted: $extinfo"
unless $extinfo =~ /^Filesystem state: *clean$/m;
};
with subtest("file system with x-initrd.mount is not unmounted"):
machine.succeed("mountpoint -q /test-x-initrd-mount")
machine.shutdown()

subtest "systemd-shutdown works", sub {
$machine->shutdown;
$machine->waitForUnit('multi-user.target');
$machine->succeed('test -e /tmp/shared/shutdown-test');
};
subprocess.check_call(
[
"qemu-img",
"convert",
"-O",
"raw",
"vm-state-machine/empty0.qcow2",
"x-initrd-mount.raw",
]
)
extinfo = subprocess.check_output(
[
"${pkgs.e2fsprogs}/bin/dumpe2fs",
"x-initrd-mount.raw",
]
).decode("utf-8")
assert (
re.search(r"^Filesystem state: *clean$", extinfo, re.MULTILINE) is not None
), ("File system was not cleanly unmounted: " + extinfo)

with subtest("systemd-shutdown works"):
machine.shutdown()
machine.wait_for_unit("multi-user.target")
machine.succeed("test -e /tmp/shared/shutdown-test")

# Test settings from /etc/sysctl.d/50-default.conf are applied
with subtest("systemd sysctl settings are applied"):
machine.wait_for_unit("multi-user.target")
assert "fq_codel" in machine.succeed("sysctl net.core.default_qdisc")

# Test cgroup accounting is enabled
with subtest("systemd cgroup accounting is enabled"):
machine.wait_for_unit("multi-user.target")
assert "yes" in machine.succeed(
"systemctl show testservice1.service -p IOAccounting"
)

# Test settings from /etc/sysctl.d/50-default.conf are applied
subtest "systemd sysctl settings are applied", sub {
$machine->waitForUnit('multi-user.target');
$machine->succeed('sysctl net.core.default_qdisc | grep -q "fq_codel"');
};

# Test cgroup accounting is enabled
subtest "systemd cgroup accounting is enabled", sub {
$machine->waitForUnit('multi-user.target');
$machine->succeed('systemctl show testservice1.service -p IOAccounting | grep -q "yes"');
$machine->succeed('systemctl status testservice1.service | grep -q "CPU:"');
};
retcode, output = machine.execute("systemctl status testservice1.service")
assert retcode in [0, 3] # https://bugs.freedesktop.org/show_bug.cgi?id=77507
assert "CPU:" in output
'';
})