mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-16 02:24:35 +00:00
105 lines
2.8 KiB
Rust
105 lines
2.8 KiB
Rust
// run-pass
|
|
|
|
#![allow(stable_features)]
|
|
// ignore-windows - this is a unix-specific test
|
|
// ignore-emscripten no processes
|
|
// ignore-sgx no processes
|
|
// ignore-fuchsia no execvp syscall
|
|
#![feature(process_exec, rustc_private)]
|
|
|
|
extern crate libc;
|
|
|
|
use std::env;
|
|
use std::io::Error;
|
|
use std::os::unix::process::CommandExt;
|
|
use std::process::Command;
|
|
use std::sync::atomic::{AtomicUsize, Ordering};
|
|
use std::sync::Arc;
|
|
|
|
fn main() {
|
|
if let Some(arg) = env::args().nth(1) {
|
|
match &arg[..] {
|
|
"test1" => println!("hello2"),
|
|
"test2" => assert_eq!(env::var("FOO").unwrap(), "BAR"),
|
|
"test3" => assert_eq!(env::current_dir().unwrap().to_str().unwrap(), "/"),
|
|
"empty" => {}
|
|
_ => panic!("unknown argument: {}", arg),
|
|
}
|
|
return;
|
|
}
|
|
|
|
let me = env::current_exe().unwrap();
|
|
|
|
let output = unsafe {
|
|
Command::new(&me)
|
|
.arg("test1")
|
|
.pre_exec(|| {
|
|
println!("hello");
|
|
Ok(())
|
|
})
|
|
.output()
|
|
.unwrap()
|
|
};
|
|
assert!(output.status.success());
|
|
assert!(output.stderr.is_empty());
|
|
assert_eq!(output.stdout, b"hello\nhello2\n");
|
|
|
|
let output = unsafe {
|
|
Command::new(&me)
|
|
.arg("test3")
|
|
.pre_exec(|| {
|
|
env::set_current_dir("/").unwrap();
|
|
Ok(())
|
|
})
|
|
.output()
|
|
.unwrap()
|
|
};
|
|
assert!(output.status.success());
|
|
assert!(output.stderr.is_empty());
|
|
assert!(output.stdout.is_empty());
|
|
|
|
let output = unsafe {
|
|
Command::new(&me)
|
|
.arg("bad")
|
|
.pre_exec(|| Err(Error::from_raw_os_error(102)))
|
|
.output()
|
|
.unwrap_err()
|
|
};
|
|
assert_eq!(output.raw_os_error(), Some(102));
|
|
|
|
let pid = unsafe { libc::getpid() };
|
|
assert!(pid >= 0);
|
|
let output = unsafe {
|
|
Command::new(&me)
|
|
.arg("empty")
|
|
.pre_exec(move || {
|
|
let child = libc::getpid();
|
|
assert!(child >= 0);
|
|
assert!(pid != child);
|
|
Ok(())
|
|
})
|
|
.output()
|
|
.unwrap()
|
|
};
|
|
assert!(output.status.success());
|
|
assert!(output.stderr.is_empty());
|
|
assert!(output.stdout.is_empty());
|
|
|
|
let mem = Arc::new(AtomicUsize::new(0));
|
|
let mem2 = mem.clone();
|
|
let output = unsafe {
|
|
Command::new(&me)
|
|
.arg("empty")
|
|
.pre_exec(move || {
|
|
assert_eq!(mem2.fetch_add(1, Ordering::SeqCst), 0);
|
|
Ok(())
|
|
})
|
|
.output()
|
|
.unwrap()
|
|
};
|
|
assert!(output.status.success());
|
|
assert!(output.stderr.is_empty());
|
|
assert!(output.stdout.is_empty());
|
|
assert_eq!(mem.load(Ordering::SeqCst), 0);
|
|
}
|