package runtime_escaped_descendant_test;

import os;
import time;

@test fn escaped_writer_does_not_hold_runner() void = {
	let fds: [2]i32;
	assert(os.pipe(&fds) == 0);
	let pid: i32 = os.fork();
	assert(pid >= 0);
	if (pid == 0) {
		os.close(fds[0]);
		if (os.setpgid(0, 0) != 0) { os.exit(120); };
		let ready: u8 = 1u8;
		if (os.write(fds[1], &ready, 1u64) != 1i64) { os.exit(121); };
		os.close(fds[1]);
		time.sleep((time.second: i64): time.duration,
		    time.clock.monotonic);
		os.exit(0);
	};
	os.close(fds[1]);
	let ready: u8 = 0u8;
	assert(os.read(fds[0], &ready, 1u64) == 1i64);
	os.close(fds[0]);
	assert(ready == 1u8);
};