#![allow(dead_code)]

mod wheel {
    include!("src/wheel.rs");
}

use wheel::{apply_wheel_delta, wheel_delta};

#[test]
fn wraps_forward_across_zero() {
    assert_eq!(wheel_delta(4090, 5, false), 11);
}

#[test]
fn wraps_backward_across_zero() {
    assert_eq!(wheel_delta(5, 4090, false), -11);
}

#[test]
fn inverts_direction() {
    assert_eq!(wheel_delta(10, 20, true), -10);
}

#[test]
fn accumulates_before_applying_selection() {
    let mut value = 5;
    let mut accumulated = 0;

    apply_wheel_delta(&mut value, 0, 10, &mut accumulated, 10, 32);
    assert_eq!(value, 5);
    assert_eq!(accumulated, 10);

    apply_wheel_delta(&mut value, 0, 10, &mut accumulated, 22, 32);
    assert_eq!(value, 6);
    assert_eq!(accumulated, 0);
}

#[test]
fn clamps_and_resets_at_bounds() {
    let mut value = 10;
    let mut accumulated = 0;

    apply_wheel_delta(&mut value, 0, 10, &mut accumulated, 64, 32);
    assert_eq!(value, 10);
    assert_eq!(accumulated, 0);
}