// Minimal test helpers for the shim trace tests (no dependency on other modules).
#pragma once

#include <cstdio>
#include <string>

namespace tracetest {

inline int& failures() { static int n = 0; return n; }
inline int& checks() { static int n = 0; return n; }

inline void report(bool ok, const char* expr, const char* file, int line, const std::string& detail) {
    ++checks();
    if (ok) return;
    ++failures();
    std::fprintf(stderr, "FAIL %s:%d  %s%s%s\n", file, line, expr, detail.empty() ? "" : "  -- ", detail.c_str());
}

inline void check_str(const std::string& got, const std::string& want, const char* expr, const char* file, int line) {
    report(got == want, expr, file, line, got == want ? "" : "\n    got:  " + got + "\n    want: " + want);
}

template <class A, class B>
inline void check_eq(const A& a, const B& b, const char* expr, const char* file, int line) {
    report(a == b, expr, file, line, a == b ? "" : "got " + std::to_string(a) + ", expected " + std::to_string(b));
}

inline int finish(const char* name) {
    std::printf("%s: %d checks, %d failures\n", name, checks(), failures());
    return failures() == 0 ? 0 : 1;
}

}  // namespace tracetest

#define CHECK(expr) ::tracetest::report((expr), #expr, __FILE__, __LINE__, "")
#define CHECK_EQ(a, b) ::tracetest::check_eq((a), (b), #a " == " #b, __FILE__, __LINE__)
#define CHECK_STR(got, want) ::tracetest::check_str((got), (want), #got, __FILE__, __LINE__)