// Minimal assertion harness for the host tests. No dependencies, prints the
// failing expression with file:line, and exits non-zero on any failure so
// tests/run_tests.sh is usable as a gate.
#pragma once
#include <cstdio>
#include <cstring>

static int g_checks = 0;
static int g_failures = 0;
static const char *g_section = "unset";

#define CASE(name) (g_section = (name))

#define CHECK(cond)                                                        \
  do {                                                                     \
    g_checks++;                                                            \
    if (!(cond)) {                                                         \
      g_failures++;                                                        \
      std::printf("  FAIL %s:%d  [%s]  %s\n", __FILE__, __LINE__,          \
                  g_section, #cond);                                       \
    }                                                                      \
  } while (0)

#define CHECK_EQ(actual, expected)                                                    \
  do {                                                                                \
    g_checks++;                                                                       \
    const long long _a = (long long)(actual), _e = (long long)(expected);             \
    if (_a != _e) {                                                                   \
      g_failures++;                                                                   \
      std::printf("  FAIL %s:%d  [%s]  %s == %s : got %lld, want %lld\n", __FILE__,   \
                  __LINE__, g_section, #actual, #expected, _a, _e);                   \
    }                                                                                 \
  } while (0)

#define CHECK_STR(actual, expected)                                                   \
  do {                                                                                \
    g_checks++;                                                                       \
    if (std::strcmp((actual), (expected)) != 0) {                                     \
      g_failures++;                                                                   \
      std::printf("  FAIL %s:%d  [%s]  %s == %s : got \"%s\", want \"%s\"\n",         \
                  __FILE__, __LINE__, g_section, #actual, #expected, (actual),        \
                  (expected));                                                        \
    }                                                                                 \
  } while (0)

static int report(const char *suite) {
  std::printf("%-24s %3d checks, %d failures\n", suite, g_checks, g_failures);
  return g_failures == 0 ? 0 : 1;
}