use crate::game::Snake;
use crate::renderer::{render, RenderCommand};

#[test]
fn render_produces_commands() {
    let snake = Snake::new();
    let mut commands = [RenderCommand { x: 0, y: 0, w: 0, h: 0, color: 0 }; 64];
    let count = render(&snake, &mut commands);
    // background + border + food + 3 body segments = 6
    assert!(count >= 6);
}

#[test]
fn first_command_is_background() {
    let snake = Snake::new();
    let mut commands = [RenderCommand { x: 0, y: 0, w: 0, h: 0, color: 0 }; 64];
    render(&snake, &mut commands);
    assert_eq!(commands[0].x, 0);
    assert_eq!(commands[0].y, 0);
    assert!(commands[0].w > 0);
    assert!(commands[0].h > 0);
}

#[test]
fn food_is_rendered() {
    let snake = Snake::new();
    let mut commands = [RenderCommand { x: 0, y: 0, w: 0, h: 0, color: 0 }; 64];
    let count = render(&snake, &mut commands);
    // Food is command index 2 (after bg and border)
    assert!(count > 2);
    assert_eq!(commands[2].color, crate::renderer::FOOD_COLOR);
}