app/test/test_cmdline_num.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
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  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <string.h>
  35 #include <inttypes.h>
  36
  37 #include <rte_string_fns.h>
  38
  39 #include <cmdline_parse.h>
  40 #include <cmdline_parse_num.h>
  41
  42 #include "test_cmdline.h"
  43
  44 struct num_unsigned_str {
  45         const char * str;
  46         uint64_t result;
  47 };
  48
  49 struct num_signed_str {
  50         const char * str;
  51         int64_t result;
  52 };
  53
  54 const struct num_unsigned_str num_valid_positive_strs[] = {
  55                 /* decimal positive */
  56                 {"0", 0 },
  57                 {"127", INT8_MAX },
  58                 {"128", INT8_MAX + 1 },
  59                 {"255", UINT8_MAX },
  60                 {"256", UINT8_MAX + 1 },
  61                 {"32767", INT16_MAX },
  62                 {"32768", INT16_MAX + 1 },
  63                 {"65535", UINT16_MAX },
  64                 {"65536", UINT16_MAX + 1 },
  65                 {"2147483647", INT32_MAX },
  66                 {"2147483648", INT32_MAX + 1U },
  67                 {"4294967295", UINT32_MAX },
  68                 {"4294967296", UINT32_MAX + 1ULL },
  69                 {"9223372036854775807", INT64_MAX },
  70                 {"9223372036854775808", INT64_MAX + 1ULL},
  71                 {"18446744073709551615", UINT64_MAX },
  72                 /* hexadecimal (no leading zeroes) */
  73                 {"0x0", 0 },
  74                 {"0x7F", INT8_MAX },
  75                 {"0x80", INT8_MAX + 1 },
  76                 {"0xFF", UINT8_MAX },
  77                 {"0x100", UINT8_MAX + 1 },
  78                 {"0x7FFF", INT16_MAX },
  79                 {"0x8000", INT16_MAX + 1 },
  80                 {"0xFFFF", UINT16_MAX },
  81                 {"0x10000", UINT16_MAX + 1 },
  82                 {"0x7FFFFFFF", INT32_MAX },
  83                 {"0x80000000", INT32_MAX + 1U },
  84                 {"0xFFFFFFFF", UINT32_MAX },
  85                 {"0x100000000", UINT32_MAX + 1ULL },
  86                 {"0x7FFFFFFFFFFFFFFF", INT64_MAX },
  87                 {"0x8000000000000000", INT64_MAX + 1ULL},
  88                 {"0xFFFFFFFFFFFFFFFF", UINT64_MAX },
  89                 /* hexadecimal (with leading zeroes) */
  90                 {"0x00", 0 },
  91                 {"0x7F", INT8_MAX },
  92                 {"0x80", INT8_MAX + 1 },
  93                 {"0xFF", UINT8_MAX },
  94                 {"0x0100", UINT8_MAX + 1 },
  95                 {"0x7FFF", INT16_MAX },
  96                 {"0x8000", INT16_MAX + 1 },
  97                 {"0xFFFF", UINT16_MAX },
  98                 {"0x00010000", UINT16_MAX + 1 },
  99                 {"0x7FFFFFFF", INT32_MAX },
 100                 {"0x80000000", INT32_MAX + 1U },
 101                 {"0xFFFFFFFF", UINT32_MAX },
 102                 {"0x0000000100000000", UINT32_MAX + 1ULL },
 103                 {"0x7FFFFFFFFFFFFFFF", INT64_MAX },
 104                 {"0x8000000000000000", INT64_MAX + 1ULL},
 105                 {"0xFFFFFFFFFFFFFFFF", UINT64_MAX },
 106                 /* check all characters */
 107                 {"0x1234567890ABCDEF", 0x1234567890ABCDEFULL },
 108                 {"0x1234567890abcdef", 0x1234567890ABCDEFULL },
 109                 /* binary (no leading zeroes) */
 110                 {"0b0", 0 },
 111                 {"0b1111111", INT8_MAX },
 112                 {"0b10000000", INT8_MAX + 1 },
 113                 {"0b11111111", UINT8_MAX },
 114                 {"0b100000000", UINT8_MAX + 1 },
 115                 {"0b111111111111111", INT16_MAX },
 116                 {"0b1000000000000000", INT16_MAX + 1 },
 117                 {"0b1111111111111111", UINT16_MAX },
 118                 {"0b10000000000000000", UINT16_MAX + 1 },
 119                 {"0b1111111111111111111111111111111", INT32_MAX },
 120                 {"0b10000000000000000000000000000000", INT32_MAX + 1U },
 121                 {"0b11111111111111111111111111111111", UINT32_MAX },
 122                 {"0b100000000000000000000000000000000", UINT32_MAX + 1ULL },
 123                 {"0b111111111111111111111111111111111111111111111111111111111111111",
 124                                 INT64_MAX },
 125                 {"0b1000000000000000000000000000000000000000000000000000000000000000",
 126                                 INT64_MAX + 1ULL},
 127                 {"0b1111111111111111111111111111111111111111111111111111111111111111",
 128                                 UINT64_MAX },
 129                 /* binary (with leading zeroes) */
 130                 {"0b01111111", INT8_MAX },
 131                 {"0b0000000100000000", UINT8_MAX + 1 },
 132                 {"0b0111111111111111", INT16_MAX },
 133                 {"0b00000000000000010000000000000000", UINT16_MAX + 1 },
 134                 {"0b01111111111111111111111111111111", INT32_MAX },
 135                 {"0b0000000000000000000000000000000100000000000000000000000000000000",
 136                                 UINT32_MAX + 1ULL },
 137                 {"0b0111111111111111111111111111111111111111111111111111111111111111",
 138                                 INT64_MAX },
 139                 /* octal */
 140                 {"00", 0 },
 141                 {"0177", INT8_MAX },
 142                 {"0200", INT8_MAX + 1 },
 143                 {"0377", UINT8_MAX },
 144                 {"0400", UINT8_MAX + 1 },
 145                 {"077777", INT16_MAX },
 146                 {"0100000", INT16_MAX + 1 },
 147                 {"0177777", UINT16_MAX },
 148                 {"0200000", UINT16_MAX + 1 },
 149                 {"017777777777", INT32_MAX },
 150                 {"020000000000", INT32_MAX + 1U },
 151                 {"037777777777", UINT32_MAX },
 152                 {"040000000000", UINT32_MAX + 1ULL },
 153                 {"0777777777777777777777", INT64_MAX },
 154                 {"01000000000000000000000", INT64_MAX + 1ULL},
 155                 {"01777777777777777777777", UINT64_MAX },
 156                 /* check all numbers */
 157                 {"012345670", 012345670 },
 158                 {"076543210", 076543210 },
 159 };
 160
 161 const struct num_signed_str num_valid_negative_strs[] = {
 162                 /* deciman negative */
 163                 {"-128", INT8_MIN },
 164                 {"-129", INT8_MIN - 1 },
 165                 {"-32768", INT16_MIN },
 166                 {"-32769", INT16_MIN - 1 },
 167                 {"-2147483648", INT32_MIN },
 168                 {"-2147483649", INT32_MIN - 1LL },
 169                 {"-9223372036854775808", INT64_MIN },
 170 };
 171
 172 const struct num_unsigned_str num_garbage_positive_strs[] = {
 173                 /* valid strings with garbage on the end, should still be valid */
 174                 /* decimal */
 175                 {"9223372036854775807\0garbage", INT64_MAX },
 176                 {"9223372036854775807\tgarbage", INT64_MAX },
 177                 {"9223372036854775807\rgarbage", INT64_MAX },
 178                 {"9223372036854775807\ngarbage", INT64_MAX },
 179                 {"9223372036854775807#garbage", INT64_MAX },
 180                 {"9223372036854775807 garbage", INT64_MAX },
 181                 /* hex */
 182                 {"0x7FFFFFFFFFFFFFFF\0garbage", INT64_MAX },
 183                 {"0x7FFFFFFFFFFFFFFF\tgarbage", INT64_MAX },
 184                 {"0x7FFFFFFFFFFFFFFF\rgarbage", INT64_MAX },
 185                 {"0x7FFFFFFFFFFFFFFF\ngarbage", INT64_MAX },
 186                 {"0x7FFFFFFFFFFFFFFF#garbage", INT64_MAX },
 187                 {"0x7FFFFFFFFFFFFFFF garbage", INT64_MAX },
 188                 /* binary */
 189                 {"0b1111111111111111111111111111111\0garbage", INT32_MAX },
 190                 {"0b1111111111111111111111111111111\rgarbage", INT32_MAX },
 191                 {"0b1111111111111111111111111111111\tgarbage", INT32_MAX },
 192                 {"0b1111111111111111111111111111111\ngarbage", INT32_MAX },
 193                 {"0b1111111111111111111111111111111#garbage", INT32_MAX },
 194                 {"0b1111111111111111111111111111111 garbage", INT32_MAX },
 195                 /* octal */
 196                 {"01777777777777777777777\0garbage", UINT64_MAX },
 197                 {"01777777777777777777777\rgarbage", UINT64_MAX },
 198                 {"01777777777777777777777\tgarbage", UINT64_MAX },
 199                 {"01777777777777777777777\ngarbage", UINT64_MAX },
 200                 {"01777777777777777777777#garbage", UINT64_MAX },
 201                 {"01777777777777777777777 garbage", UINT64_MAX },
 202 };
 203
 204 const struct num_signed_str num_garbage_negative_strs[] = {
 205                 /* valid strings with garbage on the end, should still be valid */
 206                 {"-9223372036854775808\0garbage", INT64_MIN },
 207                 {"-9223372036854775808\rgarbage", INT64_MIN },
 208                 {"-9223372036854775808\tgarbage", INT64_MIN },
 209                 {"-9223372036854775808\ngarbage", INT64_MIN },
 210                 {"-9223372036854775808#garbage", INT64_MIN },
 211                 {"-9223372036854775808 garbage", INT64_MIN },
 212 };
 213
 214 const char * num_invalid_strs[] = {
 215                 "18446744073709551616", /* out of range unsigned */
 216                 "-9223372036854775809", /* out of range negative signed */
 217                 "0x10000000000000000", /* out of range hex */
 218                 /* out of range binary */
 219                 "0b10000000000000000000000000000000000000000000000000000000000000000",
 220                 "020000000000000000000000", /* out of range octal */
 221                 /* wrong chars */
 222                 "0123456239",
 223                 "0x1234580AGE",
 224                 "0b0111010101g001",
 225                 "0b01110101017001",
 226                 /* false negative numbers */
 227                 "-12345F623",
 228                 "-0x1234580A",
 229                 "-0b0111010101",
 230                 /* too long (128+ chars) */
 231                 "0b1111000011110000111100001111000011110000111100001111000011110000"
 232                   "1111000011110000111100001111000011110000111100001111000011110000",
 233                 "1E3",
 234                 "0A",
 235                 "-B",
 236                 "+4",
 237                 "1.23G",
 238                 "",
 239                 " ",
 240                 "#",
 241                 "\r",
 242                 "\t",
 243                 "\n",
 244                 "\0",
 245 };
 246
 247 #define NUM_POSITIVE_STRS_SIZE \
 248         (sizeof(num_valid_positive_strs) / sizeof(num_valid_positive_strs[0]))
 249 #define NUM_NEGATIVE_STRS_SIZE \
 250         (sizeof(num_valid_negative_strs) / sizeof(num_valid_negative_strs[0]))
 251 #define NUM_POSITIVE_GARBAGE_STRS_SIZE \
 252         (sizeof(num_garbage_positive_strs) / sizeof(num_garbage_positive_strs[0]))
 253 #define NUM_NEGATIVE_GARBAGE_STRS_SIZE \
 254         (sizeof(num_garbage_negative_strs) / sizeof(num_garbage_negative_strs[0]))
 255 #define NUM_INVALID_STRS_SIZE \
 256         (sizeof(num_invalid_strs) / sizeof(num_invalid_strs[0]))
 257
 258
 259
 260 static int
 261 can_parse_unsigned(uint64_t expected_result, enum cmdline_numtype type)
 262 {
 263         switch (type) {
 264         case UINT8:
 265                 if (expected_result > UINT8_MAX)
 266                         return 0;
 267                 break;
 268         case UINT16:
 269                 if (expected_result > UINT16_MAX)
 270                         return 0;
 271                 break;
 272         case UINT32:
 273                 if (expected_result > UINT32_MAX)
 274                         return 0;
 275                 break;
 276         case INT8:
 277                 if (expected_result > INT8_MAX)
 278                         return 0;
 279                 break;
 280         case INT16:
 281                 if (expected_result > INT16_MAX)
 282                         return 0;
 283                 break;
 284         case INT32:
 285                 if (expected_result > INT32_MAX)
 286                         return 0;
 287                 break;
 288         case INT64:
 289                 if (expected_result > INT64_MAX)
 290                         return 0;
 291                 break;
 292         default:
 293                 return 1;
 294         }
 295         return 1;
 296 }
 297
 298 static int
 299 can_parse_signed(int64_t expected_result, enum cmdline_numtype type)
 300 {
 301         switch (type) {
 302         case UINT8:
 303                 if (expected_result > UINT8_MAX || expected_result < 0)
 304                         return 0;
 305                 break;
 306         case UINT16:
 307                 if (expected_result > UINT16_MAX || expected_result < 0)
 308                         return 0;
 309                 break;
 310         case UINT32:
 311                 if (expected_result > UINT32_MAX || expected_result < 0)
 312                         return 0;
 313                 break;
 314         case UINT64:
 315                 if (expected_result < 0)
 316                         return 0;
 317         case INT8:
 318                 if (expected_result > INT8_MAX || expected_result < INT8_MIN)
 319                         return 0;
 320                 break;
 321         case INT16:
 322                 if (expected_result > INT16_MAX || expected_result < INT16_MIN)
 323                         return 0;
 324                 break;
 325         case INT32:
 326                 if (expected_result > INT32_MAX || expected_result < INT32_MIN)
 327                         return 0;
 328                 break;
 329         default:
 330                 return 1;
 331         }
 332         return 1;
 333 }
 334
 335 /* test invalid parameters */
 336 int
 337 test_parse_num_invalid_param(void)
 338 {
 339         char buf[CMDLINE_TEST_BUFSIZE];
 340         uint32_t result;
 341         cmdline_parse_token_num_t token;
 342         int ret = 0;
 343
 344         /* set up a token */
 345         token.num_data.type = UINT32;
 346
 347         /* copy string to buffer */
 348         rte_snprintf(buf, sizeof(buf), "%s",
 349                         num_valid_positive_strs[0].str);
 350
 351         /* try all null */
 352         ret = cmdline_parse_num(NULL, NULL, NULL);
 353         if (ret != -1) {
 354                 printf("Error: parser accepted null parameters!\n");
 355                 return -1;
 356         }
 357
 358         /* try null token */
 359         ret = cmdline_parse_num(NULL, buf, (void*)&result);
 360         if (ret != -1) {
 361                 printf("Error: parser accepted null token!\n");
 362                 return -1;
 363         }
 364
 365         /* try null buf */
 366         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token, NULL,
 367                         (void*)&result);
 368         if (ret != -1) {
 369                 printf("Error: parser accepted null string!\n");
 370                 return -1;
 371         }
 372
 373         /* try null result */
 374         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token, buf, NULL);
 375         if (ret == -1) {
 376                 printf("Error: parser rejected null result!\n");
 377                 return -1;
 378         }
 379
 380         /* test help function */
 381         memset(&buf, 0, sizeof(buf));
 382
 383         /* try all null */
 384         ret = cmdline_get_help_num(NULL, NULL, 0);
 385         if (ret != -1) {
 386                 printf("Error: help function accepted null parameters!\n");
 387                 return -1;
 388         }
 389
 390         /* try null token */
 391         ret = cmdline_get_help_num(NULL, buf, sizeof(buf));
 392         if (ret != -1) {
 393                 printf("Error: help function accepted null token!\n");
 394                 return -1;
 395         }
 396
 397         /* try null buf */
 398         ret = cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token, NULL, sizeof(buf));
 399         if (ret != -1) {
 400                 printf("Error: help function accepted null buffer!\n");
 401                 return -1;
 402         }
 403
 404         /* coverage! */
 405         ret = cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token, buf, sizeof(buf));
 406         if (ret < 0) {
 407                 printf("Error: help function failed with valid parameters!\n");
 408                 return -1;
 409         }
 410
 411         return 0;
 412 }
 413 /* test valid parameters but invalid data */
 414 int
 415 test_parse_num_invalid_data(void)
 416 {
 417         enum cmdline_numtype type;
 418         int ret = 0;
 419         unsigned i;
 420         char buf[CMDLINE_TEST_BUFSIZE];
 421         uint64_t result; /* pick largest buffer */
 422         cmdline_parse_token_num_t token;
 423
 424         /* cycle through all possible parsed types */
 425         for (type = UINT8; type <= INT64; type++) {
 426                 token.num_data.type = type;
 427
 428                 /* test full strings */
 429                 for (i = 0; i < NUM_INVALID_STRS_SIZE; i++) {
 430
 431                         memset(&result, 0, sizeof(uint64_t));
 432                         memset(&buf, 0, sizeof(buf));
 433
 434                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token,
 435                                         num_invalid_strs[i], (void*)&result);
 436                         if (ret != -1) {
 437                                 /* get some info about what we are trying to parse */
 438                                 cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 439                                                 buf, sizeof(buf));
 440
 441                                 printf("Error: parsing %s as %s succeeded!\n",
 442                                                 num_invalid_strs[i], buf);
 443                                 return -1;
 444                         }
 445                 }
 446         }
 447         return 0;
 448 }
 449
 450 /* test valid parameters and data */
 451 int
 452 test_parse_num_valid(void)
 453 {
 454         int ret = 0;
 455         enum cmdline_numtype type;
 456         unsigned i;
 457         char buf[CMDLINE_TEST_BUFSIZE];
 458         uint64_t result;
 459         cmdline_parse_token_num_t token;
 460
 461         /** valid strings **/
 462
 463         /* cycle through all possible parsed types */
 464         for (type = UINT8; type <= INT64; type++) {
 465                 token.num_data.type = type;
 466
 467                 /* test positive strings */
 468                 for (i = 0; i < NUM_POSITIVE_STRS_SIZE; i++) {
 469                         result = 0;
 470                         memset(&buf, 0, sizeof(buf));
 471
 472                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 473                                         buf, sizeof(buf));
 474
 475                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token, num_valid_positive_strs[i].str,
 476                                         (void*)&result);
 477
 478                         /* if it should have passed but didn't, or if it should have failed but didn't */
 479                         if ((ret < 0) == (can_parse_unsigned(num_valid_positive_strs[i].result, type) > 0)) {
 480                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 481                                                 num_valid_positive_strs[i].str, buf);
 482                                 return -1;
 483                         }
 484                         /* check if result matches what it should have matched
 485                          * since unsigned numbers don't care about number of bits, we can just convert
 486                          * everything to uint64_t without any worries. */
 487                         if (ret > 0 && num_valid_positive_strs[i].result != result) {
 488                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 489                                                 num_valid_positive_strs[i].str, buf);
 490                                 return -1;
 491                         }
 492                 }
 493
 494                 /* test negative strings */
 495                 for (i = 0; i < NUM_NEGATIVE_STRS_SIZE; i++) {
 496                         result = 0;
 497                         memset(&buf, 0, sizeof(buf));
 498
 499                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 500                                         buf, sizeof(buf));
 501
 502                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token, num_valid_negative_strs[i].str,
 503                                         (void*)&result);
 504
 505                         /* if it should have passed but didn't, or if it should have failed but didn't */
 506                         if ((ret < 0) == (can_parse_signed(num_valid_negative_strs[i].result, type) > 0)) {
 507                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 508                                                 num_valid_negative_strs[i].str, buf);
 509                                 return -1;
 510                         }
 511                         /* check if result matches what it should have matched
 512                          * the result is signed in this case, so we have to account for that */
 513                         if (ret > 0) {
 514                                 /* detect negative */
 515                                 switch (type) {
 516                                 case INT8:
 517                                         result = (int8_t) result;
 518                                         break;
 519                                 case INT16:
 520                                         result = (int16_t) result;
 521                                         break;
 522                                 case INT32:
 523                                         result = (int32_t) result;
 524                                         break;
 525                                 default:
 526                                         break;
 527                                 }
 528                                 if (num_valid_negative_strs[i].result == (int64_t) result)
 529                                         continue;
 530                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 531                                                 num_valid_negative_strs[i].str, buf);
 532                                 return -1;
 533                         }
 534                 }
 535         }
 536
 537         /** garbage strings **/
 538
 539         /* cycle through all possible parsed types */
 540         for (type = UINT8; type <= INT64; type++) {
 541                 token.num_data.type = type;
 542
 543                 /* test positive garbage strings */
 544                 for (i = 0; i < NUM_POSITIVE_GARBAGE_STRS_SIZE; i++) {
 545                         result = 0;
 546                         memset(&buf, 0, sizeof(buf));
 547
 548                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 549                                         buf, sizeof(buf));
 550
 551                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token, num_garbage_positive_strs[i].str,
 552                                         (void*)&result);
 553
 554                         /* if it should have passed but didn't, or if it should have failed but didn't */
 555                         if ((ret < 0) == (can_parse_unsigned(num_garbage_positive_strs[i].result, type) > 0)) {
 556                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 557                                                 num_garbage_positive_strs[i].str, buf);
 558                                 return -1;
 559                         }
 560                         /* check if result matches what it should have matched
 561                          * since unsigned numbers don't care about number of bits, we can just convert
 562                          * everything to uint64_t without any worries. */
 563                         if (ret > 0 && num_garbage_positive_strs[i].result != result) {
 564                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 565                                                 num_garbage_positive_strs[i].str, buf);
 566                                 return -1;
 567                         }
 568                 }
 569
 570                 /* test negative strings */
 571                 for (i = 0; i < NUM_NEGATIVE_GARBAGE_STRS_SIZE; i++) {
 572                         result = 0;
 573                         memset(&buf, 0, sizeof(buf));
 574
 575                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 576                                         buf, sizeof(buf));
 577
 578                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token, num_garbage_negative_strs[i].str,
 579                                         (void*)&result);
 580
 581                         /* if it should have passed but didn't, or if it should have failed but didn't */
 582                         if ((ret < 0) == (can_parse_signed(num_garbage_negative_strs[i].result, type) > 0)) {
 583                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 584                                                 num_garbage_negative_strs[i].str, buf);
 585                                 return -1;
 586                         }
 587                         /* check if result matches what it should have matched
 588                          * the result is signed in this case, so we have to account for that */
 589                         if (ret > 0) {
 590                                 /* detect negative */
 591                                 switch (type) {
 592                                 case INT8:
 593                                         if (result & (INT8_MAX + 1))
 594                                                 result |= 0xFFFFFFFFFFFFFF00ULL;
 595                                         break;
 596                                 case INT16:
 597                                         if (result & (INT16_MAX + 1))
 598                                                 result |= 0xFFFFFFFFFFFF0000ULL;
 599                                         break;
 600                                 case INT32:
 601                                         if (result & (INT32_MAX + 1ULL))
 602                                                 result |= 0xFFFFFFFF00000000ULL;
 603                                         break;
 604                                 default:
 605                                         break;
 606                                 }
 607                                 if (num_garbage_negative_strs[i].result == (int64_t) result)
 608                                         continue;
 609                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 610                                                 num_garbage_negative_strs[i].str, buf);
 611                                 return -1;
 612                         }
 613                 }
 614         }
 615
 616         memset(&buf, 0, sizeof(buf));
 617
 618         /* coverage! */
 619         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 620                         buf, sizeof(buf));
 621
 622         return 0;
 623 }