#[macro_use] extern crate cfor;

#[test]
fn smoketest() {
    let mut tick = 0;
    cfor!{let mut i = 1; i <= 0b1000_0000; i *= 2; {
        tick += 1;
    }}

    assert_eq!(tick, 8);

    tick = 0;
    cfor!{let (mut a, mut b) = (0, 0); a + b < 20; { a += 1; b += 1; }; {
        tick += 1;
    }}
    assert_eq!(tick, 10);
}

#[test]
#[should_panic]
fn continue_updates() {
    cfor!(let i = 0; i < 10; panic!(); {
        // we *should* hit the step expression.
        continue
    })
}

#[test]
fn missing_parts() {
    let mut inside = false;
    cfor!{;; (); {
        inside = true;
        break
    }}
    assert!(inside);

    inside = false;
    cfor!{();; (); {
        inside = true;
        break
    }}
    assert!(inside);

    cfor!{; false; ; {
        panic!()
    }}
}

#[test]
fn multi_dec() {
    cfor!(let x = true, let y = x, let z = false; false;; {
        assert!(x);
        assert_eq!(x, y);
        assert!(!z);
    });
}

#[test]
fn multi_step() {
    let mut x = 0;
    let mut y = 0;
    cfor!(; x < 10 && y < 100; x += 1, y += 10; {});
    assert_eq!(x, 10);
    assert_eq!(y, 100);
}