Andrew's git - gitweb.git/blob - t/helper/test-example-decorate.c

   1#include "test-tool.h"
   2#include "cache.h"
   3#include "object.h"
   4#include "decorate.h"
   5
   6int cmd__example_decorate(int argc, const char **argv)
   7{
   8        struct decoration n;
   9        struct object_id one_oid = { {1} };
  10        struct object_id two_oid = { {2} };
  11        struct object_id three_oid = { {3} };
  12        struct object *one, *two, *three;
  13
  14        int decoration_a, decoration_b;
  15
  16        void *ret;
  17
  18        int i, objects_noticed = 0;
  19
  20        /*
  21         * The struct must be zero-initialized.
  22         */
  23        memset(&n, 0, sizeof(n));
  24
  25        /*
  26         * Add 2 objects, one with a non-NULL decoration and one with a NULL
  27         * decoration.
  28         */
  29        one = lookup_unknown_object(&one_oid);
  30        two = lookup_unknown_object(&two_oid);
  31        ret = add_decoration(&n, one, &decoration_a);
  32        if (ret)
  33                BUG("when adding a brand-new object, NULL should be returned");
  34        ret = add_decoration(&n, two, NULL);
  35        if (ret)
  36                BUG("when adding a brand-new object, NULL should be returned");
  37
  38        /*
  39         * When re-adding an already existing object, the old decoration is
  40         * returned.
  41         */
  42        ret = add_decoration(&n, one, NULL);
  43        if (ret != &decoration_a)
  44                BUG("when readding an already existing object, existing decoration should be returned");
  45        ret = add_decoration(&n, two, &decoration_b);
  46        if (ret)
  47                BUG("when readding an already existing object, existing decoration should be returned");
  48
  49        /*
  50         * Lookup returns the added declarations, or NULL if the object was
  51         * never added.
  52         */
  53        ret = lookup_decoration(&n, one);
  54        if (ret)
  55                BUG("lookup should return added declaration");
  56        ret = lookup_decoration(&n, two);
  57        if (ret != &decoration_b)
  58                BUG("lookup should return added declaration");
  59        three = lookup_unknown_object(&three_oid);
  60        ret = lookup_decoration(&n, three);
  61        if (ret)
  62                BUG("lookup for unknown object should return NULL");
  63
  64        /*
  65         * The user can also loop through all entries.
  66         */
  67        for (i = 0; i < n.size; i++) {
  68                if (n.entries[i].base)
  69                        objects_noticed++;
  70        }
  71        if (objects_noticed != 2)
  72                BUG("should have 2 objects");
  73
  74        return 0;
  75}