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