mod rail_runner;
use rail_runner::{railsh, RailPipedResult};

fn assert_two(result: RailPipedResult) {
    assert_eq!("2\n", result.stdout);

    let stderr_lines = result.stderr.split('\n').collect::<Vec<_>>();
    assert!(stderr_lines[0].starts_with("railsh"));
    assert_eq!("[Derailed] End of input", stderr_lines[1]);
    assert_eq!("", stderr_lines[2])
}

#[test]
pub fn one_plus_one_is_two() {
    let res = railsh("1 1 + pl\n");

    assert_two(res);
}

#[test]
pub fn one_plus_one_is_still_two() {
    let res = railsh("1 1 [ + ] do pl\n");

    assert_two(res);
}

#[test]
pub fn one_plus_one_is_definitely_two() {
    let res = railsh("1 [ 1 + ] do pl\n");

    assert_two(res);
}

#[test]
pub fn one_plus_one_is_positively_two() {
    let res = railsh("[ 1 ] 2 times + pl\n");

    assert_two(res);
}

#[test]
pub fn one_plus_one_is_never_not_two() {
    let res = railsh("[ 1 ] [ 1 ] [ + ] [ concat ] 2 times do pl\n");

    assert_two(res);
}