/**
 * int-sort-utest.c
 *   Unit tests for int-sort
 */

// +---------+--------------------------------------------------------
// | Headers |
// +---------+

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include "int-sort.h"


// +---------+--------------------------------------------------------
// | Globals |
// +---------+

// +---------+--------------------------------------------------------
// | Helpers |
// +---------+

static int
is_sorted (int arr[], int size)
{
  int i;
  for (i = 0; i < size-1; i++)
    if (arr[i] > arr[i+1])
      return 0;
  return 1;
} // is_sorted


// +------+-----------------------------------------------------------
// | Main |
// +------+

int 
main (int argc, char *argv[])
{
  int errors = 0;

  // Test the empty array.
  int test0[0];
  int_sort (test0, 0);
  // ? what do we check

  // Test a one element array
  int test1[1] = { 13 };
  int_sort (test1, 1);
  if (test1[0] != 13)
    {
      printf ("Whoops.  Could not sort { 13 }\n");
      ++errors;
    }

  // Test a longer array
  int test2[5] = { INT_MIN, INT_MAX, INT_MAX/2, INT_MIN/2, 0 };
  int_sort (test2, 5);
  if (!is_sorted (test2, 5))
    {
      printf ("Whoops.  Did not sort test2.\n");
      ++errors;
    } 
  if (test2[0] != INT_MIN)
    {
      printf ("Whoops.  test2[0] != INT_MIN.\n");
      ++errors;
    } 
  if (test2[4] != INT_MAX)
    {
      printf ("Whoops.  test2[4] != INT_MAX.\n");
      ++errors;
    } 


  // And we're done
  return errors;
} // main