aee-arcade/tests/test_scene_flow.cpp

// Smoke tests dels helpers purs del flux d'escenes: parser de debug.yaml i
// classificació de tecles reservades. Stand-alone, sense frameworks externs.
//
// Tests coberts:
//   T1 parseStartScene — "LOGO"/"TITLE"/"INTRO"/"GAME" donen l'enum correcte.
//   T2 parseStartScene — valor desconegut o fitxer buit → GAME (fallback).
//   T3 parseStartScene — YAML invàlid no llança, cau a GAME.
//   T4 resolveStartScene — fitxer inexistent → GAME sense crash.
//   T5 resolveStartScene — fitxer real amb valor vàlid és respectat.
//   T6 resolveStartScene — fitxer real amb valor invàlid → GAME.
//   T7 isReservedScancode — F1/F12/Escape reservats després de KeyConfig::load.
//   T8 isReservedScancode — SPACE i fletxes no són reservades.
//   T9 isReservedScancode — SDL_SCANCODE_UNKNOWN sempre fals.
//
// La lògica d'update/render dels placeholders (transició per timeout o
// keypress) no es testeja ací perquè `update()` crida GlobalInputs, que
// arrossega Screen/Notifier/RenderInfo i tot l'stack SDL. Aquesta integració
// la cobreix el smoke run del binari sota xvfb-run.
//
// Execució:
//   make build && cd build && ctest --output-on-failure
// O bé:
//   ./build/test_scene_flow

#include <SDL3/SDL.h>

#include <cstdio>
#include <filesystem>
#include <fstream>
#include <iostream>
#include <string>

#include "core/input/key_config.hpp"
#include "game/debug_config.hpp"
#include "game/scenes/placeholder_input.hpp"
#include "utils/defaults.hpp"

namespace {

    int g_failures = 0;

    void check(bool cond, const char* msg, const char* file, int line) {
        if (!cond) {
            std::cerr << "  FAIL: " << msg << "  (" << file << ":" << line << ")\n";
            ++g_failures;
        }
    }

#define CHECK(cond) check((cond), #cond, __FILE__, __LINE__)

    void writeTemp(const std::string& path, const std::string& content) {
        std::ofstream file(path);
        file << content;
    }

    void testParseStartSceneValid() {
        std::cout << "T1 parseStartScene valid\n";
        CHECK(DebugConfig::parseStartScene("start_scene: LOGO") == DebugConfig::StartScene::LOGO);
        CHECK(DebugConfig::parseStartScene("start_scene: TITLE") == DebugConfig::StartScene::TITLE);
        CHECK(DebugConfig::parseStartScene("start_scene: INTRO") == DebugConfig::StartScene::INTRO);
        CHECK(DebugConfig::parseStartScene("start_scene: GAME") == DebugConfig::StartScene::GAME);
    }

    void testParseStartSceneFallback() {
        std::cout << "T2 parseStartScene fallback\n";
        CHECK(DebugConfig::parseStartScene("") == DebugConfig::StartScene::GAME);
        CHECK(DebugConfig::parseStartScene("start_scene: FOO") == DebugConfig::StartScene::GAME);
        CHECK(DebugConfig::parseStartScene("other_field: 42") == DebugConfig::StartScene::GAME);
    }

    void testParseStartSceneInvalidYaml() {
        std::cout << "T3 parseStartScene YAML invàlid\n";
        // Text amb caràcters que fan petar el parser: indentació incoherent +
        // claus desbalancejades. Si el nostre try/catch no està bé, això
        // propagaria una excepció i trencaria el test.
        CHECK(DebugConfig::parseStartScene("{{{unclosed: [") == DebugConfig::StartScene::GAME);
    }

    void testResolveStartSceneMissing() {
        std::cout << "T4 resolveStartScene fitxer inexistent\n";
        CHECK(DebugConfig::resolveStartScene("/tmp/aee_arcade_nonexistent_XYZ.yaml") == DebugConfig::StartScene::GAME);
    }

    void testResolveStartSceneValid() {
        std::cout << "T5 resolveStartScene fitxer vàlid\n";
        const auto PATH = std::filesystem::temp_directory_path() / "aee_arcade_test_debug_valid.yaml";
        writeTemp(PATH.string(), "start_scene: TITLE\n");
        CHECK(DebugConfig::resolveStartScene(PATH.string()) == DebugConfig::StartScene::TITLE);
        std::filesystem::remove(PATH);
    }

    void testResolveStartSceneInvalid() {
        std::cout << "T6 resolveStartScene valor invàlid\n";
        const auto PATH = std::filesystem::temp_directory_path() / "aee_arcade_test_debug_invalid.yaml";
        writeTemp(PATH.string(), "start_scene: WUT\n");
        CHECK(DebugConfig::resolveStartScene(PATH.string()) == DebugConfig::StartScene::GAME);
        std::filesystem::remove(PATH);
    }

    void testCreateDefaultIfMissing() {
        std::cout << "T7 createDefaultIfMissing\n";
        const auto PATH = std::filesystem::temp_directory_path() / "aee_arcade_test_debug_create.yaml";
        std::filesystem::remove(PATH);
        CHECK(!std::filesystem::exists(PATH));
        DebugConfig::createDefaultIfMissing(PATH.string());
        CHECK(std::filesystem::exists(PATH));
        CHECK(DebugConfig::resolveStartScene(PATH.string()) == DebugConfig::StartScene::GAME);

        // Segona invocació: ha de ser idempotent (no reescriu si ja existeix).
        writeTemp(PATH.string(), "start_scene: LOGO\n");
        DebugConfig::createDefaultIfMissing(PATH.string());
        CHECK(DebugConfig::resolveStartScene(PATH.string()) == DebugConfig::StartScene::LOGO);
        std::filesystem::remove(PATH);
    }

    void testIsReservedScancodeAfterLoad() {
        std::cout << "T8 isReservedScancode després de KeyConfig::load\n";
        KeyConfig::get().load(Defaults::Paths::INPUT_YAML);
        CHECK(Placeholder::isReservedScancode(SDL_SCANCODE_F1));
        CHECK(Placeholder::isReservedScancode(SDL_SCANCODE_F12));
        CHECK(Placeholder::isReservedScancode(SDL_SCANCODE_ESCAPE));
    }

    void testIsReservedScancodeNonReserved() {
        std::cout << "T9 isReservedScancode per tecles no reservades\n";
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_SPACE));
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_RETURN));
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_UP));
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_DOWN));
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_LEFT));
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_RIGHT));
    }

    void testIsReservedScancodeUnknown() {
        std::cout << "T10 isReservedScancode amb UNKNOWN\n";
        CHECK(!Placeholder::isReservedScancode(SDL_SCANCODE_UNKNOWN));
    }

}  // namespace

auto main() -> int {
    testParseStartSceneValid();
    testParseStartSceneFallback();
    testParseStartSceneInvalidYaml();
    testResolveStartSceneMissing();
    testResolveStartSceneValid();
    testResolveStartSceneInvalid();
    testCreateDefaultIfMissing();
    testIsReservedScancodeAfterLoad();
    testIsReservedScancodeNonReserved();
    testIsReservedScancodeUnknown();

    if (g_failures == 0) {
        std::cout << "OK: tots els tests de scene flow passen\n";
        return 0;
    }
    std::cerr << g_failures << " tests han fallat\n";
    return 1;
}