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// Test that windows `creation_flags` extension to `Command` works.
//@ run-pass
//@ only-windows
//@ needs-subprocess
use std::env;
use std::os::windows::process::CommandExt;
use std::process::{Command, exit};
fn main() {
if env::args().skip(1).any(|s| s == "--child") {
child();
} else {
parent();
}
}
fn parent() {
let exe = env::current_exe().unwrap();
// Use the DETACH_PROCESS to create a subprocess that isn't attached to the console.
// The subprocess's exit status will be 0 if it's detached.
let status = Command::new(&exe)
.arg("--child")
.creation_flags(DETACH_PROCESS)
.spawn()
.unwrap()
.wait()
.unwrap();
assert_eq!(status.code(), Some(0));
// Try without DETACH_PROCESS to ensure this test works.
let status = Command::new(&exe).arg("--child").spawn().unwrap().wait().unwrap();
assert_eq!(status.code(), Some(1));
}
// exits with 1 if the console is attached or 0 otherwise
fn child() {
// Get the attached console's code page.
// This will fail (return 0) if no console is attached.
let has_console = GetConsoleCP() != 0;
exit(has_console as i32);
}
// Windows API definitions.
const DETACH_PROCESS: u32 = 0x00000008;
#[link(name = "kernel32")]
unsafe extern "system" {
safe fn GetConsoleCP() -> u32;
}
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