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

   1 #define CCAN_LIST_DEBUG 1
   2 #include <ccan/tlist/tlist.h>
   3 #include <ccan/tap/tap.h>
   4
   5 TLIST_TYPE(children, struct child);
   6
   7 struct parent {
   8         const char *name;
   9         struct tlist_children children;
  10         unsigned int num_children;
  11 };
  12
  13 struct child {
  14         const char *name;
  15         struct list_node list;
  16 };
  17
  18 int main(int argc, char *argv[])
  19 {
  20         struct parent parent;
  21         struct child c1, c2, c3, *c, *n;
  22         unsigned int i;
  23         struct tlist_children tlist = TLIST_INIT(tlist);
  24
  25         plan_tests(44);
  26         /* Test TLIST_INIT, and tlist_empty */
  27         ok1(tlist_empty(&tlist));
  28         ok1(tlist_check(&tlist, NULL));
  29
  30         parent.num_children = 0;
  31         tlist_init(&parent.children);
  32         /* Test tlist_init */
  33         ok1(tlist_empty(&parent.children));
  34         ok1(tlist_check(&parent.children, NULL));
  35
  36         c2.name = "c2";
  37         tlist_add(&parent.children, &c2, list);
  38         /* Test tlist_add and !tlist_empty. */
  39         ok1(!tlist_empty(&parent.children));
  40         ok1(c2.list.next == &parent.children.raw.n);
  41         ok1(c2.list.prev == &parent.children.raw.n);
  42         ok1(parent.children.raw.n.next == &c2.list);
  43         ok1(parent.children.raw.n.prev == &c2.list);
  44         /* Test tlist_check */
  45         ok1(tlist_check(&parent.children, NULL));
  46
  47         c1.name = "c1";
  48         tlist_add(&parent.children, &c1, list);
  49         /* Test list_add and !list_empty. */
  50         ok1(!tlist_empty(&parent.children));
  51         ok1(c2.list.next == &parent.children.raw.n);
  52         ok1(c2.list.prev == &c1.list);
  53         ok1(parent.children.raw.n.next == &c1.list);
  54         ok1(parent.children.raw.n.prev == &c2.list);
  55         ok1(c1.list.next == &c2.list);
  56         ok1(c1.list.prev == &parent.children.raw.n);
  57         /* Test tlist_check */
  58         ok1(tlist_check(&parent.children, NULL));
  59
  60         c3.name = "c3";
  61         tlist_add_tail(&parent.children, &c3, list);
  62         /* Test list_add_tail and !list_empty. */
  63         ok1(!tlist_empty(&parent.children));
  64         ok1(parent.children.raw.n.next == &c1.list);
  65         ok1(parent.children.raw.n.prev == &c3.list);
  66         ok1(c1.list.next == &c2.list);
  67         ok1(c1.list.prev == &parent.children.raw.n);
  68         ok1(c2.list.next == &c3.list);
  69         ok1(c2.list.prev == &c1.list);
  70         ok1(c3.list.next == &parent.children.raw.n);
  71         ok1(c3.list.prev == &c2.list);
  72         /* Test tlist_check */
  73         ok1(tlist_check(&parent.children, NULL));
  74
  75         /* Test tlist_top */
  76         ok1(tlist_top(&parent.children, struct child, list) == &c1);
  77
  78         /* Test list_tail */
  79         ok1(tlist_tail(&parent.children, struct child, list) == &c3);
  80
  81         /* Test tlist_for_each. */
  82         i = 0;
  83         tlist_for_each(&parent.children, c, list) {
  84                 switch (i++) {
  85                 case 0:
  86                         ok1(c == &c1);
  87                         break;
  88                 case 1:
  89                         ok1(c == &c2);
  90                         break;
  91                 case 2:
  92                         ok1(c == &c3);
  93                         break;
  94                 }
  95                 if (i > 2)
  96                         break;
  97         }
  98         ok1(i == 3);
  99
 100         /* Test tlist_for_each_safe, tlist_del and tlist_del_from. */
 101         i = 0;
 102         tlist_for_each_safe(&parent.children, c, n, list) {
 103                 switch (i++) {
 104                 case 0:
 105                         ok1(c == &c1);
 106                         tlist_del(c, list);
 107                         break;
 108                 case 1:
 109                         ok1(c == &c2);
 110                         tlist_del_from(&parent.children, c, list);
 111                         break;
 112                 case 2:
 113                         ok1(c == &c3);
 114                         tlist_del_from(&parent.children, c, list);
 115                         break;
 116                 }
 117                 ok1(tlist_check(&parent.children, NULL));
 118                 if (i > 2)
 119                         break;
 120         }
 121         ok1(i == 3);
 122         ok1(tlist_empty(&parent.children));
 123
 124         /* Test list_top/list_tail on empty list. */
 125         ok1(tlist_top(&parent.children, struct child, list) == NULL);
 126         ok1(tlist_tail(&parent.children, struct child, list) == NULL);
 127         return exit_status();
 128 }