release/src/router/libjson-c/tests/test_set_serializer.c

   1 #include <assert.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4
   5 #include "json.h"
   6 #include "printbuf.h"
   7
   8 struct myinfo {
   9         int value;
  10 };
  11
  12 static int freeit_was_called = 0;
  13 static void freeit(json_object *jso, void *userdata)
  14 {
  15         struct myinfo *info = userdata;
  16         printf("freeit, value=%d\n", info->value);
  17         // Don't actually free anything here, the userdata is stack allocated.
  18         freeit_was_called = 1;
  19 }
  20 static int custom_serializer(struct json_object *o,
  21                                         struct printbuf *pb,
  22                                         int level,
  23                                         int flags)
  24 {
  25         sprintbuf(pb, "Custom Output");
  26         return 0;
  27 }
  28
  29 int main(int argc, char **argv)
  30 {
  31         json_object *my_object;
  32
  33         MC_SET_DEBUG(1);
  34
  35         printf("Test setting, then resetting a custom serializer:\n");
  36         my_object = json_object_new_object();
  37         json_object_object_add(my_object, "abc", json_object_new_int(12));
  38         json_object_object_add(my_object, "foo", json_object_new_string("bar"));
  39
  40         printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object));
  41
  42         struct myinfo userdata = { .value = 123 };
  43         json_object_set_serializer(my_object, custom_serializer, &userdata, freeit);
  44
  45         printf("my_object.to_string(custom serializer)=%s\n", json_object_to_json_string(my_object));
  46
  47         printf("Next line of output should be from the custom freeit function:\n");
  48         freeit_was_called = 0;
  49         json_object_set_serializer(my_object, NULL, NULL, NULL);
  50         assert(freeit_was_called);
  51
  52         printf("my_object.to_string(standard)=%s\n", json_object_to_json_string(my_object));
  53
  54         json_object_put(my_object);
  55
  56         // ============================================
  57
  58         my_object = json_object_new_object();
  59         printf("Check that the custom serializer isn't free'd until the last json_object_put:\n");
  60         json_object_set_serializer(my_object, custom_serializer, &userdata, freeit);
  61         json_object_get(my_object);
  62         json_object_put(my_object);
  63         printf("my_object.to_string(custom serializer)=%s\n", json_object_to_json_string(my_object));
  64         printf("Next line of output should be from the custom freeit function:\n");
  65
  66         freeit_was_called = 0;
  67         json_object_put(my_object);
  68         assert(freeit_was_called);
  69
  70         return 0;
  71 }