summaryrefslogtreecommitdiff
path: root/t/helper/test-example-decorate.c
diff options
context:
space:
mode:
Diffstat (limited to 't/helper/test-example-decorate.c')
-rw-r--r--t/helper/test-example-decorate.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/t/helper/test-example-decorate.c b/t/helper/test-example-decorate.c
new file mode 100644
index 0000000000..a20a6161e4
--- /dev/null
+++ b/t/helper/test-example-decorate.c
@@ -0,0 +1,75 @@
+#include "test-tool.h"
+#include "cache.h"
+#include "object.h"
+#include "decorate.h"
+
+int cmd__example_decorate(int argc, const char **argv)
+{
+ struct decoration n;
+ struct object_id one_oid = { {1} };
+ struct object_id two_oid = { {2} };
+ struct object_id three_oid = { {3} };
+ struct object *one, *two, *three;
+
+ int decoration_a, decoration_b;
+
+ void *ret;
+
+ int i, objects_noticed = 0;
+
+ /*
+ * The struct must be zero-initialized.
+ */
+ memset(&n, 0, sizeof(n));
+
+ /*
+ * Add 2 objects, one with a non-NULL decoration and one with a NULL
+ * decoration.
+ */
+ one = lookup_unknown_object(one_oid.hash);
+ two = lookup_unknown_object(two_oid.hash);
+ ret = add_decoration(&n, one, &decoration_a);
+ if (ret)
+ BUG("when adding a brand-new object, NULL should be returned");
+ ret = add_decoration(&n, two, NULL);
+ if (ret)
+ BUG("when adding a brand-new object, NULL should be returned");
+
+ /*
+ * When re-adding an already existing object, the old decoration is
+ * returned.
+ */
+ ret = add_decoration(&n, one, NULL);
+ if (ret != &decoration_a)
+ BUG("when readding an already existing object, existing decoration should be returned");
+ ret = add_decoration(&n, two, &decoration_b);
+ if (ret)
+ BUG("when readding an already existing object, existing decoration should be returned");
+
+ /*
+ * Lookup returns the added declarations, or NULL if the object was
+ * never added.
+ */
+ ret = lookup_decoration(&n, one);
+ if (ret)
+ BUG("lookup should return added declaration");
+ ret = lookup_decoration(&n, two);
+ if (ret != &decoration_b)
+ BUG("lookup should return added declaration");
+ three = lookup_unknown_object(three_oid.hash);
+ ret = lookup_decoration(&n, three);
+ if (ret)
+ BUG("lookup for unknown object should return NULL");
+
+ /*
+ * The user can also loop through all entries.
+ */
+ for (i = 0; i < n.size; i++) {
+ if (n.entries[i].base)
+ objects_noticed++;
+ }
+ if (objects_noticed != 2)
+ BUG("should have 2 objects");
+
+ return 0;
+}