lib/ccan/container_of/test/run.c

   1 #include <ccan/container_of/container_of.h>
   2 #include <ccan/tap/tap.h>
   3
   4 struct foo {
   5         int a;
   6         char b;
   7 };
   8
   9 int main(int argc, char *argv[])
  10 {
  11         struct foo foo = { .a = 1, .b = 2 };
  12         int *intp = &foo.a;
  13         char *charp = &foo.b;
  14
  15         plan_tests(8);
  16         ok1(container_of(intp, struct foo, a) == &foo);
  17         ok1(container_of(charp, struct foo, b) == &foo);
  18         ok1(container_of_var(intp, &foo, a) == &foo);
  19         ok1(container_of_var(charp, &foo, b) == &foo);
  20
  21         ok1(container_off(struct foo, a) == 0);
  22         ok1(container_off(struct foo, b) == offsetof(struct foo, b));
  23         ok1(container_off_var(&foo, a) == 0);
  24         ok1(container_off_var(&foo, b) == offsetof(struct foo, b));
  25         return exit_status();
  26 }