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// Take a look at the license at the top of the repository in the LICENSE file.
// Once https://github.com/rust-lang/rfcs/blob/master/text/1422-pub-restricted.md
// feature gets stabilized, we can move common parts in here.
#[cfg(test)]
mod tests {
use crate::{ProcessExt, System, SystemExt};
#[test]
fn test_refresh_system() {
let mut sys = System::new();
sys.refresh_system();
// We don't want to test on unsupported systems.
if System::IS_SUPPORTED {
assert!(sys.total_memory() != 0);
assert!(sys.free_memory() != 0);
}
assert!(sys.total_memory() >= sys.free_memory());
assert!(sys.total_swap() >= sys.free_swap());
}
#[test]
fn test_refresh_process() {
let mut sys = System::new();
assert!(sys.processes().is_empty(), "no process should be listed!");
// We don't want to test on unsupported systems.
#[cfg(not(feature = "apple-sandbox"))]
if System::IS_SUPPORTED {
assert!(
sys.refresh_process(crate::get_current_pid().expect("failed to get current pid")),
"process not listed",
);
// Ensure that the process was really added to the list!
assert!(sys
.process(crate::get_current_pid().expect("failed to get current pid"))
.is_some());
}
}
#[test]
fn test_get_process() {
let mut sys = System::new();
sys.refresh_processes();
let current_pid = match crate::get_current_pid() {
Ok(pid) => pid,
_ => {
if !System::IS_SUPPORTED {
return;
}
panic!("get_current_pid should work!");
}
};
if let Some(p) = sys.process(current_pid) {
assert!(p.memory() > 0);
} else {
#[cfg(not(feature = "apple-sandbox"))]
assert!(!System::IS_SUPPORTED);
}
}
#[test]
fn check_if_send_and_sync() {
trait Foo {
fn foo(&self) {}
}
impl<T> Foo for T where T: Send {}
trait Bar {
fn bar(&self) {}
}
impl<T> Bar for T where T: Sync {}
let mut sys = System::new();
sys.refresh_processes();
let current_pid = match crate::get_current_pid() {
Ok(pid) => pid,
_ => {
if !System::IS_SUPPORTED {
return;
}
panic!("get_current_pid should work!");
}
};
if let Some(p) = sys.process(current_pid) {
p.foo(); // If this doesn't compile, it'll simply mean that the Process type
// doesn't implement the Send trait.
p.bar(); // If this doesn't compile, it'll simply mean that the Process type
// doesn't implement the Sync trait.
} else {
#[cfg(not(feature = "apple-sandbox"))]
assert!(!System::IS_SUPPORTED);
}
}
#[test]
fn check_hostname_has_no_nuls() {
let sys = System::new();
if let Some(hostname) = sys.host_name() {
assert!(!hostname.contains('\u{0}'))
}
}
#[test]
fn check_uptime() {
let sys = System::new();
let uptime = sys.uptime();
if System::IS_SUPPORTED {
std::thread::sleep(std::time::Duration::from_millis(1000));
let new_uptime = sys.uptime();
assert!(uptime < new_uptime);
}
}
// This test is used to ensure that the CPU usage computation isn't completely going off
// when refreshing it too frequently (ie, multiple times in a row in a very small interval).
#[test]
#[ignore] // This test MUST be run on its own to prevent wrong CPU usage measurements.
fn test_consecutive_cpu_usage_update() {
use crate::{PidExt, ProcessExt, ProcessRefreshKind, System, SystemExt};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::time::Duration;
if !System::IS_SUPPORTED {
return;
}
let mut sys = System::new_all();
assert!(!sys.cpus().is_empty());
sys.refresh_processes_specifics(ProcessRefreshKind::new().with_cpu());
let stop = Arc::new(AtomicBool::new(false));
// Spawning a few threads to ensure that it will actually have an impact on the CPU usage.
for it in 0..sys.cpus().len() / 2 + 1 {
let stop_c = Arc::clone(&stop);
std::thread::spawn(move || {
while !stop_c.load(Ordering::Relaxed) {
if it != 0 {
// The first thread runs at 100% to be sure it'll be noticeable.
std::thread::sleep(Duration::from_millis(1));
}
}
});
}
let mut pids = sys
.processes()
.iter()
.map(|(pid, _)| *pid)
.take(2)
.collect::<Vec<_>>();
let pid = std::process::id();
pids.push(PidExt::from_u32(pid));
assert_eq!(pids.len(), 3);
for it in 0..3 {
std::thread::sleep(
crate::System::MINIMUM_CPU_UPDATE_INTERVAL + Duration::from_millis(1),
);
for pid in &pids {
sys.refresh_process_specifics(*pid, ProcessRefreshKind::new().with_cpu());
}
// To ensure that Linux doesn't give too high numbers.
assert!(
sys.process(pids[2]).unwrap().cpu_usage() < sys.cpus().len() as f32 * 100.,
"using ALL CPU: failed at iteration {}",
it
);
// To ensure it's not 0 either.
assert!(
sys.process(pids[2]).unwrap().cpu_usage() > 0.,
"using NO CPU: failed at iteration {}",
it
);
}
stop.store(false, Ordering::Relaxed);
}
}
|
