git.ozlabs.org Git - ccan/blob - ccan/tal/link/test/run.c

   1 #include <ccan/tal/link/link.c>
   2 #include <ccan/tap/tap.h>
   3 #include <stdlib.h>
   4 #include <err.h>
   5
   6 static unsigned int destroy_count = 0;
   7 static void destroy_obj(void *obj UNNEEDED)
   8 {
   9         destroy_count++;
  10 }
  11
  12 int main(void)
  13 {
  14         char *linkable, *p1, *p2, *p3;
  15         void **voidpp;
  16
  17         plan_tests(23);
  18
  19         linkable = tal(NULL, char);
  20         ok1(tal_linkable(linkable) == linkable);
  21         ok1(tal_add_destructor(linkable, destroy_obj));
  22         /* First, free it immediately. */
  23         tal_free(linkable);
  24         ok1(destroy_count == 1);
  25
  26         /* Now create and remove a single link. */
  27         linkable = tal_linkable(tal(NULL, char));
  28         ok1(tal_add_destructor(linkable, destroy_obj));
  29         ok1(p1 = tal_link(NULL, linkable));
  30         ok1(p1 == linkable);
  31         tal_delink(NULL, linkable);
  32         ok1(destroy_count == 2);
  33
  34         /* Two links.*/
  35         linkable = tal_linkable(tal(NULL, char));
  36         ok1(tal_add_destructor(linkable, destroy_obj));
  37         ok1(p1 = tal_link(NULL, linkable));
  38         ok1(p1 == linkable);
  39         ok1(p2 = tal_link(NULL, linkable));
  40         ok1(p2 == linkable);
  41         tal_delink(NULL, linkable);
  42         tal_delink(NULL, linkable);
  43         ok1(destroy_count == 3);
  44
  45         /* Three links.*/
  46         linkable = tal_linkable(tal(NULL, char));
  47         ok1(tal_add_destructor(linkable, destroy_obj));
  48         ok1(p1 = tal_link(NULL, linkable));
  49         ok1(p1 == linkable);
  50         ok1(p2 = tal_link(NULL, linkable));
  51         ok1(p2 == linkable);
  52         ok1(p3 = tal_link(NULL, linkable));
  53         ok1(p3 == linkable);
  54         tal_delink(NULL, linkable);
  55         tal_delink(NULL, linkable);
  56         tal_delink(NULL, linkable);
  57         ok1(destroy_count == 4);
  58
  59         /* Now, indirectly. */
  60         voidpp = tal(NULL, void *);
  61         linkable = tal_linkable(tal(NULL, char));
  62         ok1(tal_add_destructor(linkable, destroy_obj));
  63 /* Suppress gratuitous warning with tests_compile_without_features */
  64 #if HAVE_STATEMENT_EXPR
  65         tal_link(voidpp, linkable);
  66 #else
  67         (void)tal_link(voidpp, linkable);
  68 #endif
  69         tal_free(voidpp);
  70         ok1(destroy_count == 5);
  71
  72         return exit_status();
  73 }