Crafter.Build/tests/Wasi/Wasi.cpp

import std;
import Crafter.Build;
#include "../_shared/TestUtil.h"
namespace fs = std::filesystem;
using namespace TestUtil;
using namespace Crafter;

int main() {
    try {
        if (!fs::exists("/usr/share/wasi-sysroot/share/libc++/v1/std.cppm")) {
            Skip("WASI sysroot/libc++ missing — install wasi-libc, wasi-libc++, wasi-libc++abi");
        }

        fs::path src = fs::current_path() / "tests" / "Wasi" / "inner";
        Configuration cfg = LoadFixture("Wasi", src);
        fs::path work = fs::current_path();

        auto br = BuildOnce(cfg);
        if (!br.result.empty()) {
            std::println(std::cerr, "build failed:\n{}", br.result);
            return 1;
        }

        fs::path artifact = cfg.BinDir() / "wasi-hello.wasm";
        if (!fs::exists(artifact)) {
            std::println(std::cerr, "expected artifact missing at {}", artifact.string());
            return 1;
        }

        // Verify WASM magic bytes: \0asm
        std::ifstream f(artifact, std::ios::binary);
        char magic[4] = {};
        f.read(magic, 4);
        if (magic[0] != '\0' || magic[1] != 'a' || magic[2] != 's' || magic[3] != 'm') {
            std::println(std::cerr, "artifact is not a valid WASM file (bad magic bytes)");
            return 1;
        }

        return 0;
    } catch (const std::exception& e) {
        std::println(std::cerr, "test exception: {}", e.what());
        return 1;
    }
}