//! IPC serialization round-trip tests (D-030 Layer 1: fixture-based).

use settled_reach_server::bridge::types::*;

#[test]
fn observer_snapshot_roundtrip() {
    let snapshot = ObserverSnapshot {
        tick: 42,
        entities: vec![VisibleEntity {
            entity_id: 1,
            x: 10.0,
            y: 20.0,
            z: 0,
            kind: EntityKind::Npc,
        }],
    };

    let bytes = rmp_serde::to_vec(&snapshot).expect("serialize");
    let decoded: ObserverSnapshot = rmp_serde::from_slice(&bytes).expect("deserialize");

    assert_eq!(decoded.tick, 42);
    assert_eq!(decoded.entities.len(), 1);
    assert_eq!(decoded.entities[0].entity_id, 1);
}

#[test]
fn player_input_roundtrip() {
    let input = PlayerInput {
        tick: 100,
        action: PlayerAction::MoveNorth,
    };

    let bytes = rmp_serde::to_vec(&input).expect("serialize");
    let decoded: PlayerInput = rmp_serde::from_slice(&bytes).expect("deserialize");

    assert_eq!(decoded.tick, 100);
}

#[test]
fn empty_snapshot_roundtrip() {
    let snapshot = ObserverSnapshot {
        tick: 0,
        entities: vec![],
    };

    let bytes = rmp_serde::to_vec(&snapshot).expect("serialize");
    let decoded: ObserverSnapshot = rmp_serde::from_slice(&bytes).expect("deserialize");

    assert_eq!(decoded.tick, 0);
    assert!(decoded.entities.is_empty());
}