src/shared/test-tables.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <errno.h>
   5 #include <inttypes.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include "string-util.h"
  11
  12 #define _test_table(name, lookup, reverse, size, sparse)                \
  13         for (int64_t _i = -EINVAL, _boring = 0; _i < size + 1; _i++) {  \
  14                 const char* _val;                                       \
  15                 int64_t _rev;                                           \
  16                                                                         \
  17                 _val = lookup(_i);                                      \
  18                 if (_val) {                                             \
  19                         _rev = reverse(_val);                           \
  20                         _boring = 0;                                    \
  21                 } else {                                                \
  22                         _rev = reverse("--no-such--value----");         \
  23                         _boring += _i >= 0;                             \
  24                 }                                                       \
  25                 if (_boring == 0 || _i == size)                         \
  26                         printf("%s: %" PRIi64 " → %s → %" PRIi64 "\n", name, _i, strnull(_val), _rev); \
  27                 else if (_boring == 1)                                  \
  28                         printf("%*s  ...\n", (int) strlen(name), "");   \
  29                                                                         \
  30                 if (_i >= 0 && _i < size) {                             \
  31                         if (sparse)                                     \
  32                                 assert_se(_rev == _i || _rev == -EINVAL); \
  33                         else                                            \
  34                                 assert_se(_val && _rev == _i);          \
  35                 } else                                                  \
  36                         assert_se(!_val && _rev == -EINVAL);            \
  37         }
  38
  39 #define test_table(lower, upper)                                        \
  40         _test_table(STRINGIFY(lower), lower##_to_string, lower##_from_string, _##upper##_MAX, false)
  41
  42 #define test_table_sparse(lower, upper)                                 \
  43         _test_table(STRINGIFY(lower), lower##_to_string, lower##_from_string, _##upper##_MAX, true)