extern crate debug_cell;

use std::process::Command;
use std::env;
use debug_cell::RefCell;

fn main() {
    let args = env::args().collect::<Vec<_>>();
    if args.len() > 1 && args[1] == "child1" {
        let r = RefCell::new(3);
        let _a = r.borrow();
        let _b = r.borrow();
        r.borrow_mut();
    } else if args.len() > 1 && args[1] == "child2" {
        let r = RefCell::new(3);
        let _a = r.borrow_mut();
        r.borrow_mut();
    } else {
        runtest("child1", &[
            "current active borrow",
            "tests/smoke.rs:11",
            "tests/smoke.rs:12",
        ]);
        runtest("child2", &[
            "current active borrow",
            "tests/smoke.rs:16",
        ]);
    }
}

fn runtest(name: &str, substrs: &[&str]) {
    let output = Command::new(env::current_exe().unwrap())
                         .arg(name).output().unwrap();
    let stderr = String::from_utf8(output.stderr).unwrap();

    for s in substrs {
        assert!(stderr.contains(s) == cfg!(debug_assertions),
                "`{}` not found in `{}`", s, stderr);
    }
    println!("ok: {}", name);
}