//! Headless smoke tests (NOT GUI coverage).
//!
//! These never launch the GUI or render a frame: they prove the catalog
//! builds road geometry and the fixed-step loop runs. Real navigation,
//! render, touch, lifecycle, and persistence journeys live in
//! `tests/runtime_ui.rs` (headless production path) and `tests/ui.rs`
//! (GUI harness, currently ignored with reason/owner/expiry).

use nigig_traffic::game_frame::RenderMode;
use nigig_traffic::traffic::TrafficWorld;

#[test]
fn traffic_world_loads_and_ticks() {
    let mut world = TrafficWorld::new();
    world.load_scenario(0);
    let scenario = world.scenario().expect("scenario loaded").clone();
    assert!(!scenario.title.is_empty());
    // Tick a few frames with no input – should stay in Intro then Driving
    let input = makepad_game_blocks::DriveInput::default();
    for _ in 0..70 {
        world.tick(&input);
    }
    assert!(world.run.tick >= 70);
    // Intro books exactly 60 ticks, then the run goes live.
    assert_eq!(world.run.phase, nigig_traffic::traffic::Phase::Driving);
}

#[test]
fn traffic_world_navigates_scenarios() {
    let mut world = TrafficWorld::new();
    world.load_scenario(0);
    let first = world.scenario().expect("scenario loaded").id;
    world.next();
    let second = world.scenario().expect("scenario loaded").id;
    assert_ne!(first, second);
    world.prev();
    assert_eq!(world.scenario().expect("scenario loaded").id, first);
}

#[test]
fn render_mode_labels_are_stable() {
    assert_eq!(RenderMode::TopDown.label(), "Top-Down");
    assert_eq!(RenderMode::Chase25D.label(), "Chase-Cam (2.5D)");
    assert_eq!(RenderMode::Full3D.label(), "Full 3D");
}

#[test]
fn traffic_world_builds_first_scenarios_without_panic() {
    // Headless smoke: every scenario must build road geometry and survive
    // ticks (no panics in `build_world_for`, id ordering, or `evaluate`
    // with no scenario edge cases). The actual GPU frame is only written by
    // a real headless binary run, not by this test.
    let all = TrafficWorld::all_scenarios();
    assert!(all.len() >= 47);
    for (idx, s) in all.iter().enumerate() {
        let mut world = TrafficWorld::new();
        world.load_scenario(idx);
        // Intro (60) + 60 driving ticks: exercises phase flip + evaluator.
        for _ in 0..120 {
            world.tick(&makepad_game_blocks::DriveInput::default());
        }
        assert_eq!(world.run.tick, 120, "{}", s.id);
        assert_eq!(world.run.phase, nigig_traffic::traffic::Phase::Driving);
    }
}