#include "libft.h"
#include "test_utils.h"
#include <limits.h>

static void
_s_test_itoa (void)
{
  int i;
  char label[128];
  char expected[64];

  _s_section ("ft_itoa");

  /* zero */
  {
    char *p = ft_itoa (0);
    _s_check ("zero", p && strcmp (p, "0") == 0);
    free (p);
  }

  /* positive */
  {
    char *p = ft_itoa (42);
    _s_check ("positive", p && strcmp (p, "42") == 0);
    free (p);
  }

  /* negative */
  {
    char *p = ft_itoa (-42);
    _s_check ("negative", p && strcmp (p, "-42") == 0);
    free (p);
  }

  /* INT_MAX */
  {
    char *p = ft_itoa (INT_MAX);
    snprintf (expected, sizeof (expected), "%d", INT_MAX);
    _s_check ("INT_MAX", p && strcmp (p, expected) == 0);
    free (p);
  }

  /* INT_MIN */
  {
    char *p = ft_itoa (INT_MIN);
    snprintf (expected, sizeof (expected), "%d", INT_MIN);
    _s_check ("INT_MIN", p && strcmp (p, expected) == 0);
    free (p);
  }

  /* single digit positive */
  {
    char *p = ft_itoa (7);
    _s_check ("single digit", p && strcmp (p, "7") == 0);
    free (p);
  }

  /* single digit negative */
  {
    char *p = ft_itoa (-1);
    _s_check ("neg single digit", p && strcmp (p, "-1") == 0);
    free (p);
  }

  /* powers of ten */
  {
    char *p;

    p = ft_itoa (10);
    _s_check ("10", p && strcmp (p, "10") == 0);
    free (p);
    p = ft_itoa (100);
    _s_check ("100", p && strcmp (p, "100") == 0);
    free (p);
    p = ft_itoa (-1000);
    _s_check ("-1000", p && strcmp (p, "-1000") == 0);
    free (p);
  }

  /* randomized */
  for (i = 0; i < _S_RAND_ITERS; i++)
    {
      int n = rand () - RAND_MAX / 2;
      char *p = ft_itoa (n);
      snprintf (expected, sizeof (expected), "%d", n);
      snprintf (label, sizeof (label), "random n=%d", n);
      _s_check (label, p && strcmp (p, expected) == 0);
      free (p);
    }
}

int
main (void)
{
  srand (time (NULL));
  _s_test_itoa ();
  _s_print_results ();
  return (_s_fail != 0);
}