/**
 * hash-utest
 *   Some simple unit tests of our hash table.
 */

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

#include <stdio.h>
#include <string.h>	// For strcmp

#include "hash.h"	// What we're testing.

// +--------+---------------------------------------------------------
// | Locals |
// +--------+

/**
 * A count of tests.
 */
static int tests = 0;

/**
 * A count of failed tests.
 */
static int errors = 0;


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

static void
test_put (char *name, char *defn)
{
  ++tests;
  if (table_put (name, defn) == 0)
    {
      ++errors;
      printf ("table_put(\"%s\", \"%s\") failed.\n", name, defn);
    }
} // test_put

static void
test_get (char *name, char *expected)
{
  char *defn = table_get (name);
  ++tests;
  if ((expected == NULL) && (defn != NULL))
    {
      ++errors;
      printf ("For table_get (\"%s\"), expected NULL, got \"%s\"\n", 
              name, defn);
    }
  else if ((expected != NULL) && (defn == NULL))
    {
      ++errors;
      printf ("For table_get (\"%s\"), expected \"%s\", got NULL\n", 
              name, expected);
    }
   else if ( (expected != NULL)
             && (defn != NULL)
             && (strcmp (expected, defn) != 0) )
    {
      ++errors;
      printf ("For table_get (\"%s\"), expected \"%s\", got \"%s\"\n",
              name, expected, defn);
    }
} // test_get


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

int
main ()
{
  // Testing
  test_put ("Batman", "Robin");
  test_get ("Batman", "Robin");

  // Print some final information
  printf ("%d tests conducted.\n", tests);
  if (errors > 1)
    printf ("%d tests failed.\n", errors);
  else if (errors == 1)
    printf ("one test failed.\n");
  else
    printf ("ALL TESTS PASSED\n");
  return errors;
} // main