nushell/crates/nu-command/tests/commands/network/port.rs

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use nu_test_support::{nu, pipeline};
use std::net::TcpListener;
use std::sync::mpsc;
#[test]
fn port_with_invalid_range() {
let actual = nu!(
cwd: ".", pipeline(
r#"
port 4000 3999
"#
));
assert!(actual.err.contains("Invalid range"))
}
#[test]
fn port_with_already_usage() {
let retry_times = 10;
for _ in 0..retry_times {
let (tx, rx) = mpsc::sync_channel(0);
// let system pick a free port for us.
let free_port = {
let listener = TcpListener::bind("127.0.0.1:0").expect("failed to pick a port");
listener.local_addr().unwrap().port()
};
let handler = std::thread::spawn(move || {
let _listener = TcpListener::bind(format!("127.0.0.1:{free_port}"));
let _ = rx.recv();
});
let actual = nu!(
cwd: ".", pipeline(&format!("port {free_port} {free_port}"))
);
let _ = tx.send(true);
// make sure that the thread is closed and we release the port.
handler.join().unwrap();
// check for error kind str.
if actual.err.contains("AddrInUse") {
return;
}
}
panic!("already check port report AddrInUse for several times, but still failed.");
}
#[test]
fn port_from_system_given() {
let actual = nu!(
cwd: ".", pipeline(
r#"
port
"#
));
// check that we can get an integer port from system.
assert!(actual.out.parse::<u16>().unwrap() > 0)
}