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nixpkgs/nixos/tests/switch-test.nix
Janne Heß 3617ecb67f
nixos/switch-to-configuration: Fix backslashes in unit names
systemd needs this so special characters (like the ones in wireguard
units that appear because they are part of base64) can be escaped using
the \x syntax.

Root of the issue is that `glob()` handles the backslash internally
which is obviously not what we want here.

Also add a test case and fix some perlcritic issues in the subroutine.
2022-02-17 12:49:45 +01:00

746 lines
34 KiB
Nix

# Test configuration switching.
import ./make-test-python.nix ({ pkgs, ...} : {
name = "switch-test";
meta = with pkgs.lib.maintainers; {
maintainers = [ gleber das_j ];
};
nodes = {
machine = { pkgs, lib, ... }: {
users.mutableUsers = false;
specialisation = rec {
simpleService.configuration = {
systemd.services.test = {
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${pkgs.coreutils}/bin/true";
ExecReload = "${pkgs.coreutils}/bin/true";
};
};
};
simpleServiceModified.configuration = {
imports = [ simpleService.configuration ];
systemd.services.test.serviceConfig.X-Test = true;
};
simpleServiceNostop.configuration = {
imports = [ simpleService.configuration ];
systemd.services.test.stopIfChanged = false;
};
simpleServiceReload.configuration = {
imports = [ simpleService.configuration ];
systemd.services.test = {
reloadIfChanged = true;
serviceConfig.ExecReload = "${pkgs.coreutils}/bin/true";
};
};
simpleServiceNorestart.configuration = {
imports = [ simpleService.configuration ];
systemd.services.test.restartIfChanged = false;
};
simpleServiceFailing.configuration = {
imports = [ simpleServiceModified.configuration ];
systemd.services.test.serviceConfig.ExecStart = lib.mkForce "${pkgs.coreutils}/bin/false";
};
autorestartService.configuration = {
# A service that immediately goes into restarting (but without failing)
systemd.services.autorestart = {
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "simple";
Restart = "always";
RestartSec = "20y"; # Should be long enough
ExecStart = "${pkgs.coreutils}/bin/true";
};
};
};
autorestartServiceFailing.configuration = {
imports = [ autorestartService.configuration ];
systemd.services.autorestart.serviceConfig = {
ExecStart = lib.mkForce "${pkgs.coreutils}/bin/false";
};
};
simpleServiceWithExtraSection.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.packages = [ (pkgs.writeTextFile {
name = "systemd-extra-section";
destination = "/etc/systemd/system/test.service";
text = ''
[X-Test]
X-Test-Value=a
'';
}) ];
};
simpleServiceWithExtraSectionOtherName.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.packages = [ (pkgs.writeTextFile {
name = "systemd-extra-section";
destination = "/etc/systemd/system/test.service";
text = ''
[X-Test2]
X-Test-Value=a
'';
}) ];
};
simpleServiceWithInstallSection.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.packages = [ (pkgs.writeTextFile {
name = "systemd-extra-section";
destination = "/etc/systemd/system/test.service";
text = ''
[Install]
WantedBy=multi-user.target
'';
}) ];
};
simpleServiceWithExtraKey.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.serviceConfig."X-Test" = "test";
};
simpleServiceWithExtraKeyOtherValue.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.serviceConfig."X-Test" = "test2";
};
simpleServiceWithExtraKeyOtherName.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.serviceConfig."X-Test2" = "test";
};
simpleServiceReloadTrigger.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.reloadTriggers = [ "/dev/null" ];
};
simpleServiceReloadTriggerModified.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.reloadTriggers = [ "/dev/zero" ];
};
simpleServiceReloadTriggerModifiedAndSomethingElse.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test = {
reloadTriggers = [ "/dev/zero" ];
serviceConfig."X-Test" = "test";
};
};
simpleServiceReloadTriggerModifiedSomethingElse.configuration = {
imports = [ simpleServiceNostop.configuration ];
systemd.services.test.serviceConfig."X-Test" = "test";
};
unitWithBackslash.configuration = {
systemd.services."escaped\\x2ddash" = {
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${pkgs.coreutils}/bin/true";
ExecReload = "${pkgs.coreutils}/bin/true";
};
};
};
unitWithBackslashModified.configuration = {
imports = [ unitWithBackslash.configuration ];
systemd.services."escaped\\x2ddash".serviceConfig.X-Test = "test";
};
restart-and-reload-by-activation-script.configuration = {
systemd.services = rec {
simple-service = {
# No wantedBy so we can check if the activation script restart triggers them
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${pkgs.coreutils}/bin/true";
ExecReload = "${pkgs.coreutils}/bin/true";
};
};
simple-restart-service = simple-service // {
stopIfChanged = false;
};
simple-reload-service = simple-service // {
reloadIfChanged = true;
};
no-restart-service = simple-service // {
restartIfChanged = false;
};
reload-triggers = simple-service // {
wantedBy = [ "multi-user.target" ];
};
reload-triggers-and-restart-by-as = simple-service;
reload-triggers-and-restart = simple-service // {
stopIfChanged = false; # easier to check for this
wantedBy = [ "multi-user.target" ];
};
};
system.activationScripts.restart-and-reload-test = {
supportsDryActivation = true;
deps = [];
text = ''
if [ "$NIXOS_ACTION" = dry-activate ]; then
f=/run/nixos/dry-activation-restart-list
g=/run/nixos/dry-activation-reload-list
else
f=/run/nixos/activation-restart-list
g=/run/nixos/activation-reload-list
fi
cat <<EOF >> "$f"
simple-service.service
simple-restart-service.service
simple-reload-service.service
no-restart-service.service
reload-triggers-and-restart-by-as.service
EOF
cat <<EOF >> "$g"
reload-triggers.service
reload-triggers-and-restart-by-as.service
reload-triggers-and-restart.service
EOF
'';
};
};
restart-and-reload-by-activation-script-modified.configuration = {
imports = [ restart-and-reload-by-activation-script.configuration ];
systemd.services.reload-triggers-and-restart.serviceConfig.X-Modified = "test";
};
mount.configuration = {
systemd.mounts = [
{
description = "Testmount";
what = "tmpfs";
type = "tmpfs";
where = "/testmount";
options = "size=1M";
wantedBy = [ "local-fs.target" ];
}
];
};
mountModified.configuration = {
systemd.mounts = [
{
description = "Testmount";
what = "tmpfs";
type = "tmpfs";
where = "/testmount";
options = "size=10M";
wantedBy = [ "local-fs.target" ];
}
];
};
timer.configuration = {
systemd.timers.test-timer = {
wantedBy = [ "timers.target" ];
timerConfig.OnCalendar = "@1395716396"; # chosen by fair dice roll
};
systemd.services.test-timer = {
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.coreutils}/bin/true";
};
};
};
timerModified.configuration = {
imports = [ timer.configuration ];
systemd.timers.test-timer.timerConfig.OnCalendar = lib.mkForce "Fri 2012-11-23 16:00:00";
};
path.configuration = {
systemd.paths.test-watch = {
wantedBy = [ "paths.target" ];
pathConfig.PathExists = "/testpath";
};
systemd.services.test-watch = {
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.coreutils}/bin/touch /testpath-modified";
};
};
};
pathModified.configuration = {
imports = [ path.configuration ];
systemd.paths.test-watch.pathConfig.PathExists = lib.mkForce "/testpath2";
};
slice.configuration = {
systemd.slices.testslice.sliceConfig.MemoryMax = "1"; # don't allow memory allocation
systemd.services.testservice = {
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${pkgs.coreutils}/bin/true";
Slice = "testslice.slice";
};
};
};
sliceModified.configuration = {
imports = [ slice.configuration ];
systemd.slices.testslice.sliceConfig.MemoryMax = lib.mkForce null;
};
};
};
other = {
users.mutableUsers = true;
};
};
testScript = { nodes, ... }: let
originalSystem = nodes.machine.config.system.build.toplevel;
otherSystem = nodes.other.config.system.build.toplevel;
machine = nodes.machine.config.system.build.toplevel;
# Ensures failures pass through using pipefail, otherwise failing to
# switch-to-configuration is hidden by the success of `tee`.
stderrRunner = pkgs.writeScript "stderr-runner" ''
#! ${pkgs.runtimeShell}
set -e
set -o pipefail
exec env -i "$@" | tee /dev/stderr
'';
in /* python */ ''
def switch_to_specialisation(system, name, action="test", fail=False):
if name == "":
stc = f"{system}/bin/switch-to-configuration"
else:
stc = f"{system}/specialisation/{name}/bin/switch-to-configuration"
out = machine.fail(f"{stc} {action} 2>&1") if fail \
else machine.succeed(f"{stc} {action} 2>&1")
assert_lacks(out, "switch-to-configuration line") # Perl warnings
return out
def assert_contains(haystack, needle):
if needle not in haystack:
print("The haystack that will cause the following exception is:")
print("---")
print(haystack)
print("---")
raise Exception(f"Expected string '{needle}' was not found")
def assert_lacks(haystack, needle):
if needle in haystack:
print("The haystack that will cause the following exception is:")
print("---")
print(haystack, end="")
print("---")
raise Exception(f"Unexpected string '{needle}' was found")
machine.wait_for_unit("multi-user.target")
machine.succeed(
"${stderrRunner} ${originalSystem}/bin/switch-to-configuration test"
)
machine.succeed(
"${stderrRunner} ${otherSystem}/bin/switch-to-configuration test"
)
with subtest("services"):
switch_to_specialisation("${machine}", "")
# Nothing happens when nothing is changed
out = switch_to_specialisation("${machine}", "")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Start a simple service
out = switch_to_specialisation("${machine}", "simpleService")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: dbus.service\n") # huh
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_contains(out, "the following new units were started: test.service\n")
assert_lacks(out, "as well:")
# Not changing anything doesn't do anything
out = switch_to_specialisation("${machine}", "simpleService")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Restart the simple service
out = switch_to_specialisation("${machine}", "simpleServiceModified")
assert_contains(out, "stopping the following units: test.service\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_contains(out, "\nstarting the following units: test.service\n")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Restart the service with stopIfChanged=false
out = switch_to_specialisation("${machine}", "simpleServiceNostop")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Reload the service with reloadIfChanged=true
out = switch_to_specialisation("${machine}", "simpleServiceReload")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: test.service\n")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Nothing happens when restartIfChanged=false
out = switch_to_specialisation("${machine}", "simpleServiceNorestart")
assert_lacks(out, "stopping the following units:")
assert_contains(out, "NOT restarting the following changed units: test.service\n")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Dry mode shows different messages
out = switch_to_specialisation("${machine}", "simpleService", action="dry-activate")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
assert_contains(out, "would start the following units: test.service\n")
# Ensure \ works in unit names
out = switch_to_specialisation("${machine}", "unitWithBackslash")
assert_contains(out, "stopping the following units: test.service\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_contains(out, "the following new units were started: escaped\\x2ddash.service\n")
assert_lacks(out, "as well:")
out = switch_to_specialisation("${machine}", "unitWithBackslashModified")
assert_contains(out, "stopping the following units: escaped\\x2ddash.service\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_contains(out, "\nstarting the following units: escaped\\x2ddash.service\n")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
with subtest("failing units"):
# Let the simple service fail
switch_to_specialisation("${machine}", "simpleServiceModified")
out = switch_to_specialisation("${machine}", "simpleServiceFailing", fail=True)
assert_contains(out, "stopping the following units: test.service\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_contains(out, "\nstarting the following units: test.service\n")
assert_lacks(out, "the following new units were started:")
assert_contains(out, "warning: the following units failed: test.service\n")
assert_contains(out, "Main PID:") # output of systemctl
assert_lacks(out, "as well:")
# A unit that gets into autorestart without failing is not treated as failed
out = switch_to_specialisation("${machine}", "autorestartService")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_contains(out, "the following new units were started: autorestart.service\n")
assert_lacks(out, "as well:")
machine.systemctl('stop autorestart.service') # cancel the 20y timer
# Switching to the same system should do nothing (especially not treat the unit as failed)
out = switch_to_specialisation("${machine}", "autorestartService")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_contains(out, "the following new units were started: autorestart.service\n")
assert_lacks(out, "as well:")
machine.systemctl('stop autorestart.service') # cancel the 20y timer
# If systemd thinks the unit has failed and is in autorestart, we should show it as failed
out = switch_to_specialisation("${machine}", "autorestartServiceFailing", fail=True)
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_contains(out, "warning: the following units failed: autorestart.service\n")
assert_contains(out, "Main PID:") # output of systemctl
assert_lacks(out, "as well:")
with subtest("unit file parser"):
# Switch to a well-known state
switch_to_specialisation("${machine}", "simpleServiceNostop")
# Add a section
out = switch_to_specialisation("${machine}", "simpleServiceWithExtraSection")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Rename it
out = switch_to_specialisation("${machine}", "simpleServiceWithExtraSectionOtherName")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Remove it
out = switch_to_specialisation("${machine}", "simpleServiceNostop")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# [Install] section is ignored
out = switch_to_specialisation("${machine}", "simpleServiceWithInstallSection")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Add a key
out = switch_to_specialisation("${machine}", "simpleServiceWithExtraKey")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Change its value
out = switch_to_specialisation("${machine}", "simpleServiceWithExtraKeyOtherValue")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Rename it
out = switch_to_specialisation("${machine}", "simpleServiceWithExtraKeyOtherName")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Remove it
out = switch_to_specialisation("${machine}", "simpleServiceNostop")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Add a reload trigger
out = switch_to_specialisation("${machine}", "simpleServiceReloadTrigger")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: test.service\n")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Modify the reload trigger
out = switch_to_specialisation("${machine}", "simpleServiceReloadTriggerModified")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: test.service\n")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Modify the reload trigger and something else
out = switch_to_specialisation("${machine}", "simpleServiceReloadTriggerModifiedAndSomethingElse")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "\nrestarting the following units: test.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# Remove the reload trigger
out = switch_to_specialisation("${machine}", "simpleServiceReloadTriggerModifiedSomethingElse")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
with subtest("restart and reload by activation script"):
switch_to_specialisation("${machine}", "simpleServiceNorestart")
out = switch_to_specialisation("${machine}", "restart-and-reload-by-activation-script")
assert_contains(out, "stopping the following units: test.service\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "restarting the following units:")
assert_contains(out, "\nstarting the following units: no-restart-service.service, reload-triggers-and-restart-by-as.service, simple-reload-service.service, simple-restart-service.service, simple-service.service\n")
assert_lacks(out, "as well:")
# Switch to the same system where the example services get restarted
# and reloaded by the activation script
out = switch_to_specialisation("${machine}", "restart-and-reload-by-activation-script")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: reload-triggers-and-restart.service, reload-triggers.service, simple-reload-service.service\n")
assert_contains(out, "restarting the following units: reload-triggers-and-restart-by-as.service, simple-restart-service.service, simple-service.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "as well:")
# Switch to the same system and see if the service gets restarted when it's modified
# while the fact that it's supposed to be reloaded by the activation script is ignored.
out = switch_to_specialisation("${machine}", "restart-and-reload-by-activation-script-modified")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: reload-triggers.service, simple-reload-service.service\n")
assert_contains(out, "restarting the following units: reload-triggers-and-restart-by-as.service, reload-triggers-and-restart.service, simple-restart-service.service, simple-service.service\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "as well:")
# The same, but in dry mode
out = switch_to_specialisation("${machine}", "restart-and-reload-by-activation-script", action="dry-activate")
assert_lacks(out, "would stop the following units:")
assert_lacks(out, "would NOT stop the following changed units:")
assert_contains(out, "would reload the following units: reload-triggers.service, simple-reload-service.service\n")
assert_contains(out, "would restart the following units: reload-triggers-and-restart-by-as.service, reload-triggers-and-restart.service, simple-restart-service.service, simple-service.service\n")
assert_lacks(out, "\nwould start the following units:")
assert_lacks(out, "as well:")
with subtest("mounts"):
switch_to_specialisation("${machine}", "mount")
out = machine.succeed("mount | grep 'on /testmount'")
assert_contains(out, "size=1024k")
out = switch_to_specialisation("${machine}", "mountModified")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "NOT restarting the following changed units:")
assert_contains(out, "reloading the following units: testmount.mount\n")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# It changed
out = machine.succeed("mount | grep 'on /testmount'")
assert_contains(out, "size=10240k")
with subtest("timers"):
switch_to_specialisation("${machine}", "timer")
out = machine.succeed("systemctl show test-timer.timer")
assert_contains(out, "OnCalendar=2014-03-25 02:59:56 UTC")
out = switch_to_specialisation("${machine}", "timerModified")
assert_lacks(out, "stopping the following units:")
assert_lacks(out, "reloading the following units:")
assert_contains(out, "restarting the following units: test-timer.timer\n")
assert_lacks(out, "\nstarting the following units:")
assert_lacks(out, "the following new units were started:")
assert_lacks(out, "as well:")
# It changed
out = machine.succeed("systemctl show test-timer.timer")
assert_contains(out, "OnCalendar=Fri 2012-11-23 16:00:00")
with subtest("paths"):
out = switch_to_specialisation("${machine}", "path")
assert_contains(out, "stopping the following units: test-timer.timer\n")
assert_lacks(out, "NOT restarting the following changed units:")
assert_lacks(out, "reloading the following units:")
assert_lacks(out, "\nrestarting the following units:")
assert_lacks(out, "\nstarting the following units:")
assert_contains(out, "the following new units were started: test-watch.path")
assert_lacks(out, "as well:")
machine.fail("test -f /testpath-modified")
# touch the file, unit should be triggered
machine.succeed("touch /testpath")
machine.wait_until_succeeds("test -f /testpath-modified")
machine.succeed("rm /testpath /testpath-modified")
switch_to_specialisation("${machine}", "pathModified")
machine.succeed("touch /testpath")
machine.fail("test -f /testpath-modified")
machine.succeed("touch /testpath2")
machine.wait_until_succeeds("test -f /testpath-modified")
# This test ensures that changes to slice configuration get applied.
# We test this by having a slice that allows no memory allocation at
# all and starting a service within it. If the service crashes, the slice
# is applied and if we modify the slice to allow memory allocation, the
# service should successfully start.
with subtest("slices"):
machine.succeed("echo 0 > /proc/sys/vm/panic_on_oom") # allow OOMing
out = switch_to_specialisation("${machine}", "slice")
machine.fail("systemctl start testservice.service")
out = switch_to_specialisation("${machine}", "sliceModified")
machine.succeed("systemctl start testservice.service")
machine.succeed("echo 1 > /proc/sys/vm/panic_on_oom") # disallow OOMing
'';
})