src/shared/test-tables.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6
   7 typedef const char* (*lookup_t)(int);
   8 typedef int (*reverse_t)(const char*);
   9
  10 static inline void _test_table(const char *name,
  11                                lookup_t lookup,
  12                                reverse_t reverse,
  13                                int size,
  14                                bool sparse) {
  15         int i, boring = 0;
  16
  17         for (i = -1; i < size + 1; i++) {
  18                 const char* val = lookup(i);
  19                 int rev;
  20
  21                 if (val) {
  22                         rev = reverse(val);
  23                         boring = 0;
  24                 } else {
  25                         rev = reverse("--no-such--value----");
  26                         boring += i >= 0;
  27                 }
  28
  29                 if (boring < 1 || i == size)
  30                         printf("%s: %d → %s → %d\n", name, i, val, rev);
  31                 else if (boring == 1)
  32                         printf("%*s  ...\n", (int) strlen(name), "");
  33
  34                 assert_se(!(i >= 0 && i < size ?
  35                             sparse ? rev != i && rev != -1 : val == NULL || rev != i :
  36                             val != NULL || rev != -1));
  37         }
  38 }
  39
  40 #define test_table(lower, upper) \
  41         _test_table(STRINGIFY(lower), lower##_to_string, lower##_from_string, _##upper##_MAX, false)
  42
  43 #define test_table_sparse(lower, upper) \
  44         _test_table(STRINGIFY(lower), lower##_to_string, lower##_from_string, _##upper##_MAX, true)