Added back one test

Author: czurnieden

demo/test.c

@@ -1531,6 +1531,7 @@ static int test_mp_decr(void)
 
 static int test_mp_is_small_prime(void)
 {
+
    return EXIT_SUCCESS;
 }
 
@@ -1542,7 +1543,52 @@ static int test_mp_next_small_prime(void)
 
 static int test_mp_prec_small_prime(void)
 {
+   mp_sieve sieve;
+   mp_sieve_prime ret;
+   mp_err e;
+   int i, test_size;
+
+   const mp_sieve_prime to_test[] = {
+      52, 137, 153, 179, 6, 153, 53, 132, 150, 65,
+      27414, 36339, 36155, 11067, 52060, 5741,
+      29755, 2698, 52572, 13053, 9375, 47241,
+      39626, 207423, 128857, 37419, 141696, 189465,
+      41503, 127370, 91673, 8473, 479142414, 465566339,
+      961126169, 1057886067, 1222702060, 1017450741,
+      1019879755, 72282698, 2048787577, 2058368053
+   };
+   const mp_sieve_prime tested[] = {
+      47, 137, 151, 179, 5, 151, 53, 131, 149, 61,
+      27409, 36319, 36151, 11059, 52057, 5741,
+      29753, 2693, 52571, 13049, 9371, 47237,
+      39623, 207409, 128857, 37409, 141689, 189463,
+      41491, 127363, 91673, 8467, 479142413, 465566323,
+      961126169, 1057886029, 1222702051, 1017450739,
+      1019879717, 72282697, 2048787577, 2058368051
+   };
+
+   mp_sieve_init(&sieve);
+
+   test_size = (int)(sizeof(to_test)/sizeof(mp_sieve_prime));
+
+   for (i = 0; i < test_size; i++) {
+      if ((e = mp_prec_small_prime(to_test[i], &ret, &sieve)) != MP_OKAY) {
+         fprintf(stderr,"mp_prec_small_prime failed with \"%s\" at index %d\n",
+                 mp_error_to_string(e), i);
+         goto LTM_ERR;
+      }
+      if (ret != tested[i]) {
+         fprintf(stderr,"mp_prec_small_prime failed for %lu. Said %lu but is %lu \n",
+                 (unsigned long)to_test[i], (unsigned long)ret, (unsigned long)tested[i]);
+         goto LTM_ERR;
+      }
+   }
+
+   mp_sieve_clear(&sieve);
    return EXIT_SUCCESS;
+LTM_ERR:
+   mp_sieve_clear(&sieve);
+   return EXIT_FAILURE;
 }