797 lines
26 KiB
Rust
797 lines
26 KiB
Rust
//! Bounded, off-UI-thread adapters. A missing service is `None`, never a fake state.
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mod bluetooth;
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mod dbus_cache;
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mod network;
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use std::{
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env, fs,
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path::Path,
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process::{Command, Stdio},
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sync::{
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Arc, Condvar, Mutex,
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mpsc::{self, SyncSender},
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},
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thread,
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time::Duration,
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};
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#[derive(Clone, Debug, Default)]
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pub struct Snapshot {
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pub network: Option<Network>,
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pub bluetooth: Option<Bluetooth>,
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pub audio: Option<Audio>,
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pub battery: Option<Battery>,
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pub brightness: Option<u8>,
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pub notifications: Option<Notifications>,
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pub poweroff: bool,
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pub reboot: bool,
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pub suspend: bool,
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}
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#[derive(Clone, Debug)]
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pub struct Network {
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pub enabled: bool,
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pub connection: Option<String>,
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pub signal: u8,
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}
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#[derive(Clone, Debug)]
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pub struct Bluetooth {
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pub enabled: bool,
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pub devices: Vec<String>,
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}
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#[derive(Clone, Debug)]
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pub struct Audio {
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pub volume: u8,
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pub muted: bool,
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pub output: String,
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}
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#[derive(Clone, Debug)]
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pub struct Battery {
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pub percent: u8,
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pub status: String,
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}
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#[derive(Clone, Debug)]
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pub struct Notifications {
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pub count: u32,
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pub dnd: bool,
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}
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#[derive(Clone, Debug)]
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pub enum Action {
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Wifi(bool),
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Bluetooth(bool),
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Volume(u8),
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Mute(bool),
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Brightness(u8),
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Dnd(bool),
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Notifications,
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Settings,
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Poweroff,
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Reboot,
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Suspend,
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}
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impl Action {
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fn key(&self) -> std::mem::Discriminant<Self> {
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std::mem::discriminant(self)
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}
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}
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#[derive(Clone, Debug)]
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pub struct Update {
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pub snapshot: Snapshot,
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pub generation: u64,
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pub error: Option<String>,
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}
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pub struct Service {
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settings: Arc<Mutex<Option<Vec<String>>>>,
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tx: SyncSender<(u64, Action)>,
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updates: Updates,
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pub generation: u64,
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}
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// The receiver stays with the service so a subscription can start after the
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// first poll. A watch channel retains the newest result without blocking workers.
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#[derive(Clone)]
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struct Updates(Arc<tokio::sync::watch::Receiver<Option<Update>>>);
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impl std::hash::Hash for Updates {
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fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
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std::ptr::hash(Arc::as_ptr(&self.0), state);
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}
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}
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impl Updates {
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fn stream(&self) -> impl cosmic::iced::futures::Stream<Item = Update> + use<> {
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cosmic::iced::futures::stream::unfold(self.0.as_ref().clone(), |mut receiver| async move {
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loop {
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receiver.changed().await.ok()?;
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let update = receiver.borrow_and_update().clone();
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if let Some(update) = update {
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return Some((update, receiver));
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}
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}
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})
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}
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}
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type PollState = (Mutex<(u64, bool, Option<String>, bool)>, Condvar);
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fn wait_for_poll(shared: &PollState) -> Option<u64> {
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let state = shared
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.1
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.wait_while(shared.0.lock().unwrap(), |state| state.1 && !state.3)
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.unwrap();
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(!state.3).then_some(state.0)
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}
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impl Service {
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pub fn start(settings: Option<Vec<String>>) -> Self {
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let live_settings = Arc::new(Mutex::new(settings));
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let settings = live_settings.clone();
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let (tx, commands) = mpsc::sync_channel::<(u64, Action)>(64);
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let (updates, rx) = tokio::sync::watch::channel(None);
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// Polling and writes have separate workers: a missing D-Bus service must
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// never hold up volume/brightness changes. Publish only coherent polls.
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let shared = Arc::new((
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Mutex::new((0u64, false, None::<String>, false)),
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Condvar::new(),
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));
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let polling = shared.clone();
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thread::spawn(move || {
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let mut system_bus = StatusBus::new(true);
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let mut session_bus = StatusBus::new(false);
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let mut network = dbus_cache::Cache::new("org.freedesktop.NetworkManager");
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let mut bluetooth = dbus_cache::Cache::new("org.bluez");
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loop {
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// A poll overlapping a write is discarded below. Wait for the
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// write to finish before retrying instead of launching commands
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// repeatedly while a slow control operation is still running.
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let Some(before) = wait_for_poll(&polling) else {
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break;
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};
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let mut snapshot = poll(&mut system_bus, &mut session_bus);
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snapshot.network = network.read(before, network::read);
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snapshot.bluetooth = bluetooth.read(before, bluetooth::read);
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let state = polling.0.lock().unwrap();
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if state.3 {
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break;
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}
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if state.0 == before && !state.1 {
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updates.send_replace(Some(Update {
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snapshot,
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generation: state.0,
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error: state.2.clone(),
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}));
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let _ = polling.1.wait_timeout(state, Duration::from_secs(2));
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}
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}
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});
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thread::spawn(move || {
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loop {
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let first = match commands.recv() {
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Ok(command) => command,
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Err(_) => break,
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};
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let mut pending = vec![first];
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for command in commands.try_iter() {
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pending.retain(|(_, action)| action.key() != command.1.key());
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pending.push(command);
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}
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for (id, action) in pending {
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{
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let mut state = shared.0.lock().unwrap();
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state.0 = id;
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state.1 = true;
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}
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let settings = settings.lock().unwrap().clone();
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let error = execute(&action, settings.as_deref()).err();
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let mut state = shared.0.lock().unwrap();
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state.1 = false;
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state.2 = error;
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shared.1.notify_one();
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}
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}
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shared.0.lock().unwrap().3 = true;
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shared.1.notify_one();
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});
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Self {
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settings: live_settings,
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tx,
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updates: Updates(Arc::new(rx)),
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generation: 0,
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}
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}
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pub fn send(&mut self, action: Action) -> Result<(), String> {
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let generation = self.generation + 1;
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self.tx
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.try_send((generation, action))
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.map_err(|_| "Controls are busy; please try again".to_owned())?;
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self.generation = generation;
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Ok(())
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}
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pub fn update_settings(&self, settings: Option<Vec<String>>) {
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*self.settings.lock().unwrap() = settings;
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}
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pub fn subscription(&self) -> cosmic::iced::Subscription<Update> {
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cosmic::iced::Subscription::run_with(self.updates.clone(), Updates::stream)
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}
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}
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pub fn available(program: &str) -> bool {
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use std::os::unix::fs::PermissionsExt;
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let executable = |p: &Path| {
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p.metadata()
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.is_ok_and(|m| m.is_file() && m.permissions().mode() & 0o111 != 0)
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};
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if program.contains('/') {
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return executable(Path::new(program));
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}
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env::var_os("PATH")
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.is_some_and(|paths| env::split_paths(&paths).any(|path| executable(&path.join(program))))
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}
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fn run(program: &str, args: &[&str]) -> Result<String, String> {
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if !available(program) {
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return Err(format!("{program} is not installed"));
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}
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// Coreutils timeout bounds disconnected D-Bus services, too. Never invoke a shell.
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let output = Command::new("timeout")
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.args(["--kill-after=1s", "2s", program])
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.args(args)
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.env("LC_ALL", "C")
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.stdin(Stdio::null())
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.output()
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.map_err(|e| e.to_string())?;
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if !output.status.success() {
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let message = String::from_utf8_lossy(&output.stderr)
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.trim()
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.chars()
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.take(180)
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.collect::<String>();
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return Err(if message.is_empty() {
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format!("{program} did not complete successfully")
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} else {
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message
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});
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}
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Ok(String::from_utf8_lossy(&output.stdout).trim().to_owned())
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}
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// Connections live only on the polling worker. Each method still runs on every
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// poll with a bounded reply timeout; capability values are never cached.
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struct StatusBus {
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system: bool,
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connection: Option<zbus::blocking::Connection>,
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}
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impl StatusBus {
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fn new(system: bool) -> Self {
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Self {
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system,
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connection: None,
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}
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}
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fn query<T>(
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&mut self,
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query: impl FnOnce(&zbus::blocking::Connection) -> zbus::Result<T>,
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) -> Option<T> {
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if self.connection.is_none() {
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let builder = if self.system {
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zbus::blocking::connection::Builder::system()
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} else {
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zbus::blocking::connection::Builder::session()
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};
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self.connection = builder
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.ok()?
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.method_timeout(Duration::from_secs(2))
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.build()
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.ok();
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}
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match query(self.connection.as_ref()?) {
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Ok(value) => Some(value),
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Err(_) => {
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// A disconnected/restarted bus must be rediscovered next poll.
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self.connection = None;
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None
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}
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}
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}
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fn can_power(&mut self, method: &str) -> bool {
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self.query(|connection| {
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connection
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.call_method(
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Some("org.freedesktop.login1"),
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"/org/freedesktop/login1",
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Some("org.freedesktop.login1.Manager"),
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method,
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&(),
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)?
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.body()
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.deserialize::<String>()
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})
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.is_some_and(|value| value == "yes" || value == "challenge")
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}
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fn notification_service_owned(&mut self) -> bool {
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self.query(|connection| {
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connection
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.call_method(
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Some("org.freedesktop.DBus"),
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"/org/freedesktop/DBus",
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Some("org.freedesktop.DBus"),
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"NameHasOwner",
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&("org.erikreider.swaync",),
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)?
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.body()
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.deserialize::<bool>()
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})
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.unwrap_or(false)
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}
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}
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fn poll(system_bus: &mut StatusBus, session_bus: &mut StatusBus) -> Snapshot {
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Snapshot {
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network: None,
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bluetooth: None,
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audio: audio(),
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battery: battery(),
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brightness: brightness(),
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notifications: notifications(session_bus),
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poweroff: system_bus.can_power("CanPowerOff"),
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reboot: system_bus.can_power("CanReboot"),
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suspend: system_bus.can_power("CanSuspend"),
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}
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}
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pub fn parse_audio(value: &str) -> Option<(u8, bool)> {
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let volume = value
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.strip_prefix("Volume: ")?
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.split_whitespace()
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.next()?
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.parse::<f32>()
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.ok()?;
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if !volume.is_finite() || volume < 0.0 {
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return None;
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}
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Some((
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(volume * 100.0).round().clamp(0.0, 100.0) as u8,
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value.contains("[MUTED]"),
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))
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}
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fn audio() -> Option<Audio> {
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let (volume, muted) =
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parse_audio(&run("wpctl", &["get-volume", "@DEFAULT_AUDIO_SINK@"]).ok()?)?;
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let info = run("wpctl", &["inspect", "@DEFAULT_AUDIO_SINK@"]).ok()?;
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let output = info
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.lines()
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.find_map(|line| line.trim().strip_prefix("node.description = "))
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.map(|s| s.trim_matches('"').to_owned())
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.unwrap_or_else(|| "Default output".into());
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Some(Audio {
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volume,
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muted,
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output,
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})
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}
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fn read(path: &Path, name: &str) -> Option<String> {
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fs::read_to_string(path.join(name))
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.ok()
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.map(|s| s.trim().to_owned())
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}
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fn battery() -> Option<Battery> {
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let entries = fs::read_dir("/sys/class/power_supply").ok()?;
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// Prefer a system battery, not a mouse/headset battery.
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let mut batteries = entries
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.flatten()
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.map(|e| e.path())
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.filter(|p| {
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read(p, "type").as_deref() == Some("Battery")
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&& read(p, "scope").as_deref() != Some("Device")
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})
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.collect::<Vec<_>>();
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batteries.sort();
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batteries.iter().find_map(|path| {
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Some(Battery {
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percent: read(path, "capacity")?.parse::<u8>().ok()?.min(100),
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status: read(path, "status")?,
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})
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})
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}
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fn brightness() -> Option<u8> {
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parse_brightness(
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&run(
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"brightnessctl",
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&["--class=backlight", "--machine-readable", "info"],
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)
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.ok()?,
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)
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}
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fn parse_brightness(value: &str) -> Option<u8> {
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// device,class,current,percentage,max. Compute the ratio ourselves to
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// preserve the previous rounding rather than using the CLI's percentage.
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let mut fields = value.trim().split(',');
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let _device = fields.next()?;
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if fields.next()? != "backlight" {
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return None;
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}
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let current = fields.next()?.parse::<f64>().ok()?;
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let _percentage = fields.next()?;
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let max = fields.next()?.parse::<f64>().ok()?;
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(fields.next().is_none()
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&& max.is_finite()
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&& max > 0.0
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&& current.is_finite()
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&& current >= 0.0)
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.then(|| (100.0 * current / max).round().clamp(0.0, 100.0) as u8)
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}
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fn notifications(bus: &mut StatusBus) -> Option<Notifications> {
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// Check service ownership first: swaync-client otherwise waits indefinitely.
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if !bus.notification_service_owned() {
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return None;
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}
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let count = run("swaync-client", &["--count"]).ok()?.parse().ok()?;
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let dnd = match run("swaync-client", &["--get-dnd"]).ok()?.as_str() {
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"true" => true,
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"false" => false,
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_ => return None,
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};
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Some(Notifications { count, dnd })
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}
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fn execute(action: &Action, settings: Option<&[String]>) -> Result<(), String> {
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match action {
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Action::Wifi(on) => run("nmcli", &["radio", "wifi", if *on { "on" } else { "off" }]),
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Action::Bluetooth(on) => run("bluetoothctl", &["power", if *on { "on" } else { "off" }]),
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Action::Volume(value) => run(
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"wpctl",
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&[
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"set-volume",
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"-l",
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"1.0",
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"@DEFAULT_AUDIO_SINK@",
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&format!("{}%", value.min(&100)),
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],
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),
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Action::Mute(on) => run(
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"wpctl",
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&[
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"set-mute",
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"@DEFAULT_AUDIO_SINK@",
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if *on { "1" } else { "0" },
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],
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),
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Action::Brightness(value) => run(
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"brightnessctl",
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&[
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"--class=backlight",
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"set",
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&format!("{}%", value.clamp(&1, &100)),
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],
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),
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Action::Dnd(on) => run(
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"swaync-client",
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&[if *on { "--dnd-on" } else { "--dnd-off" }],
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),
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Action::Notifications => run("swaync-client", &["--open-panel"]),
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Action::Poweroff => run("systemctl", &["poweroff"]),
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Action::Reboot => run("systemctl", &["reboot"]),
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Action::Suspend => run("systemctl", &["suspend"]),
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Action::Settings => {
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let argv = settings
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.filter(|argv| !argv.is_empty())
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.ok_or("No settings application configured")?;
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let mut command = Command::new(&argv[0]);
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command
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.args(&argv[1..])
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.stdin(Stdio::null())
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.env_remove("WAYLAND_SOCKET")
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.env_remove("FERESE_SHELL_CONTROL_SOCKET");
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if let Some(display) = env::var_os("FERESE_PUBLIC_WAYLAND_DISPLAY") {
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command.env("WAYLAND_DISPLAY", display);
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}
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command.env_remove("FERESE_PUBLIC_WAYLAND_DISPLAY");
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let mut child = command.spawn().map_err(|e| e.to_string())?;
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thread::spawn(move || {
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let _ = child.wait();
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});
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return Ok(());
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}
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}
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.map(|_| ())
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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|
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pub(super) struct TestBus {
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daemon: std::process::Child,
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pub(super) address: String,
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}
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impl TestBus {
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pub(super) fn new() -> Self {
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use std::io::{BufRead, BufReader};
|
|
let mut daemon = Command::new("dbus-daemon")
|
|
.args(["--session", "--nofork", "--nopidfile", "--print-address=1"])
|
|
.stdout(Stdio::piped())
|
|
.spawn()
|
|
.unwrap();
|
|
let mut address = String::new();
|
|
BufReader::new(daemon.stdout.take().unwrap())
|
|
.read_line(&mut address)
|
|
.unwrap();
|
|
Self {
|
|
daemon,
|
|
address: address.trim().to_owned(),
|
|
}
|
|
}
|
|
pub(super) fn connect(&self) -> zbus::blocking::Connection {
|
|
zbus::blocking::connection::Builder::address(self.address.as_str())
|
|
.unwrap()
|
|
.method_timeout(Duration::from_secs(2))
|
|
.build()
|
|
.unwrap()
|
|
}
|
|
}
|
|
impl Drop for TestBus {
|
|
fn drop(&mut self) {
|
|
let _ = self.daemon.kill();
|
|
let _ = self.daemon.wait();
|
|
}
|
|
}
|
|
|
|
struct MockLogin1(Arc<std::sync::atomic::AtomicU8>);
|
|
|
|
#[zbus::interface(name = "org.freedesktop.login1.Manager")]
|
|
impl MockLogin1 {
|
|
fn can_power_off(&self) -> zbus::fdo::Result<String> {
|
|
use std::sync::atomic::Ordering;
|
|
match self.0.load(Ordering::Relaxed) {
|
|
0 => Ok("yes".into()),
|
|
1 => Ok("no".into()),
|
|
3 => {
|
|
thread::sleep(Duration::from_millis(500));
|
|
Ok("yes".into())
|
|
}
|
|
_ => Err(zbus::fdo::Error::Failed("test failure".into())),
|
|
}
|
|
}
|
|
fn can_reboot(&self) -> String {
|
|
"challenge".into()
|
|
}
|
|
fn can_suspend(&self) -> String {
|
|
"na".into()
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
#[ignore = "requires dbus-daemon; uses a private test bus"]
|
|
fn native_bus_queries_track_live_changes_and_fail_closed() {
|
|
use std::io::{BufRead, BufReader};
|
|
use std::sync::atomic::{AtomicU8, Ordering};
|
|
struct Daemon(std::process::Child);
|
|
impl Drop for Daemon {
|
|
fn drop(&mut self) {
|
|
let _ = self.0.kill();
|
|
let _ = self.0.wait();
|
|
}
|
|
}
|
|
let mut daemon = Daemon(
|
|
Command::new("dbus-daemon")
|
|
.args(["--session", "--nofork", "--nopidfile", "--print-address=1"])
|
|
.stdout(Stdio::piped())
|
|
.spawn()
|
|
.unwrap(),
|
|
);
|
|
let mut address = String::new();
|
|
BufReader::new(daemon.0.stdout.take().unwrap())
|
|
.read_line(&mut address)
|
|
.unwrap();
|
|
let mode = Arc::new(AtomicU8::new(0));
|
|
let server = zbus::blocking::connection::Builder::address(address.trim())
|
|
.unwrap()
|
|
.name("org.freedesktop.login1")
|
|
.unwrap()
|
|
.serve_at("/org/freedesktop/login1", MockLogin1(mode.clone()))
|
|
.unwrap()
|
|
.build()
|
|
.unwrap();
|
|
let connect = || {
|
|
zbus::blocking::connection::Builder::address(address.trim())
|
|
.unwrap()
|
|
.method_timeout(Duration::from_millis(200))
|
|
.build()
|
|
.unwrap()
|
|
};
|
|
let mut bus = StatusBus {
|
|
system: false,
|
|
connection: Some(connect()),
|
|
};
|
|
assert!(bus.can_power("CanPowerOff"));
|
|
assert!(bus.can_power("CanReboot"));
|
|
assert!(!bus.can_power("CanSuspend"));
|
|
mode.store(1, Ordering::Relaxed);
|
|
assert!(
|
|
!bus.can_power("CanPowerOff"),
|
|
"capabilities must not be cached"
|
|
);
|
|
assert!(bus.connection.is_some());
|
|
assert!(!bus.notification_service_owned());
|
|
server.request_name("org.erikreider.swaync").unwrap();
|
|
assert!(bus.notification_service_owned());
|
|
server.release_name("org.erikreider.swaync").unwrap();
|
|
assert!(!bus.notification_service_owned());
|
|
mode.store(2, Ordering::Relaxed);
|
|
assert!(!bus.can_power("CanPowerOff"));
|
|
assert!(
|
|
bus.connection.is_none(),
|
|
"failed connections must be eligible for reconnection"
|
|
);
|
|
bus.connection = Some(connect());
|
|
assert!(!bus.can_power("MissingMethod"));
|
|
assert!(bus.connection.is_none());
|
|
bus.connection = Some(connect());
|
|
mode.store(3, Ordering::Relaxed);
|
|
assert!(
|
|
!bus.can_power("CanPowerOff"),
|
|
"a reply beyond the method deadline must fail closed"
|
|
);
|
|
assert!(bus.connection.is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn brightness_info_preserves_ratio_rounding_and_rejects_bad_devices() {
|
|
assert_eq!(parse_brightness("intel,backlight,72,18%,400"), Some(18));
|
|
assert_eq!(parse_brightness("panel,backlight,2,66%,3\n"), Some(67));
|
|
assert_eq!(parse_brightness("panel,backlight,0,0%,400"), Some(0));
|
|
for value in [
|
|
"",
|
|
"panel,leds,1,1%,100",
|
|
"panel,backlight,1,0%,0",
|
|
"panel,backlight,NaN,0%,100",
|
|
"panel,backlight,1,0%,inf",
|
|
"panel,backlight,-1,0%,100",
|
|
"panel,backlight,1,0%,100,extra",
|
|
] {
|
|
assert_eq!(parse_brightness(value), None, "{value}");
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn status_stream_retains_latest_result_wakes_and_closes() {
|
|
use cosmic::iced::futures::{
|
|
Stream,
|
|
task::{ArcWake, waker},
|
|
};
|
|
use std::{
|
|
sync::atomic::{AtomicUsize, Ordering},
|
|
task::{Context, Poll},
|
|
};
|
|
|
|
#[derive(Default)]
|
|
struct WakeCount(AtomicUsize);
|
|
impl ArcWake for WakeCount {
|
|
fn wake_by_ref(arc_self: &Arc<Self>) {
|
|
arc_self.0.fetch_add(1, Ordering::Relaxed);
|
|
}
|
|
}
|
|
let result = |generation| {
|
|
Some(Update {
|
|
snapshot: Snapshot {
|
|
brightness: Some(42),
|
|
..Snapshot::default()
|
|
},
|
|
generation,
|
|
error: Some("service unavailable".into()),
|
|
})
|
|
};
|
|
let (sender, receiver) = tokio::sync::watch::channel(None);
|
|
let updates = Updates(Arc::new(receiver));
|
|
// Results produced before the UI subscribes remain available; a slow
|
|
// consumer gets the newest generation instead of a stale queued result.
|
|
sender.send_replace(result(1));
|
|
sender.send_replace(result(2));
|
|
let mut stream = Box::pin(updates.stream());
|
|
let wakes = Arc::new(WakeCount::default());
|
|
let waker = waker(wakes.clone());
|
|
let mut context = Context::from_waker(&waker);
|
|
let Poll::Ready(Some(update)) = stream.as_mut().poll_next(&mut context) else {
|
|
panic!("startup result missing");
|
|
};
|
|
assert_eq!(update.generation, 2);
|
|
assert_eq!(update.snapshot.brightness, Some(42));
|
|
assert_eq!(update.error.as_deref(), Some("service unavailable"));
|
|
assert!(stream.as_mut().poll_next(&mut context).is_pending());
|
|
let before = wakes.0.load(Ordering::Relaxed);
|
|
thread::spawn(move || {
|
|
sender.send_replace(result(3));
|
|
// Closing still delivers the last unseen update before ending.
|
|
})
|
|
.join()
|
|
.unwrap();
|
|
assert!(wakes.0.load(Ordering::Relaxed) > before);
|
|
let Poll::Ready(Some(update)) = stream.as_mut().poll_next(&mut context) else {
|
|
panic!("worker result missing");
|
|
};
|
|
assert_eq!(update.generation, 3);
|
|
assert!(matches!(
|
|
stream.as_mut().poll_next(&mut context),
|
|
Poll::Ready(None)
|
|
));
|
|
}
|
|
|
|
#[test]
|
|
fn polling_waits_for_a_write_and_uses_the_completed_generation() {
|
|
let shared = Arc::new((Mutex::new((7, true, None, false)), Condvar::new()));
|
|
let worker_state = shared.clone();
|
|
let (sender, receiver) = mpsc::channel();
|
|
let worker = thread::spawn(move || {
|
|
sender.send(wait_for_poll(&worker_state)).unwrap();
|
|
});
|
|
assert!(matches!(
|
|
receiver.recv_timeout(Duration::from_millis(30)),
|
|
Err(mpsc::RecvTimeoutError::Timeout)
|
|
));
|
|
{
|
|
let mut state = shared.0.lock().unwrap();
|
|
state.0 = 8;
|
|
state.1 = false;
|
|
shared.1.notify_one();
|
|
}
|
|
assert_eq!(
|
|
receiver.recv_timeout(Duration::from_secs(2)).unwrap(),
|
|
Some(8)
|
|
);
|
|
worker.join().unwrap();
|
|
}
|
|
|
|
#[test]
|
|
fn shutdown_unblocks_polling_even_during_a_write() {
|
|
let shared = Arc::new((Mutex::new((7, true, None, false)), Condvar::new()));
|
|
let worker_state = shared.clone();
|
|
let (sender, receiver) = mpsc::channel();
|
|
let worker = thread::spawn(move || {
|
|
sender.send(wait_for_poll(&worker_state)).unwrap();
|
|
});
|
|
{
|
|
let mut state = shared.0.lock().unwrap();
|
|
state.3 = true;
|
|
shared.1.notify_one();
|
|
}
|
|
assert_eq!(receiver.recv_timeout(Duration::from_secs(2)).unwrap(), None);
|
|
worker.join().unwrap();
|
|
}
|
|
#[test]
|
|
fn audio_parser_handles_mute_and_rejects_invalid_values() {
|
|
assert_eq!(parse_audio("Volume: 0.42 [MUTED]"), Some((42, true)));
|
|
assert_eq!(parse_audio("Volume: 1.2"), Some((100, false)));
|
|
for value in ["", "Volume: NaN", "Volume: -1", "error"] {
|
|
assert_eq!(parse_audio(value), None);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn default_snapshot_does_not_invent_services() {
|
|
let s = Snapshot::default();
|
|
assert!(s.network.is_none() && s.audio.is_none() && s.notifications.is_none());
|
|
assert!(!s.poweroff && !s.reboot && !s.suspend);
|
|
}
|
|
}
|