htable: add htable_copy.

[ccan] / ccan / htable / test / run-copy.c

diff --git a/ccan/htable/test/run-copy.c b/ccan/htable/test/run-copy.c
new file mode 100644 (file)
index 0000000..02d5bbe
--- /dev/null
+++ b/ccan/htable/test/run-copy.c
@@ -0,0 +1,44 @@
+#include <ccan/htable/htable.h>
+#include <ccan/htable/htable.c>
+#include <ccan/tap/tap.h>
+#include <stdbool.h>
+#include <string.h>
+
+#define NUM_VALS 512
+
+static size_t hash(const void *elem, void *unused)
+{
+       size_t h = *(uint64_t *)elem / 2;
+       return h;
+}
+
+static bool cmp(const void *candidate, void *ptr)
+{
+       return *(const uint64_t *)candidate == *(const uint64_t *)ptr;
+}
+
+int main(int argc, char *argv[])
+{
+       struct htable ht, ht2;
+       uint64_t val[NUM_VALS], i;
+
+       plan_tests((NUM_VALS) * 3);
+       for (i = 0; i < NUM_VALS; i++)
+               val[i] = i;
+
+       htable_init(&ht, hash, NULL);
+       for (i = 0; i < NUM_VALS; i++) {
+               ok1(ht.max >= i);
+               ok1(ht.max <= i * 2);
+               htable_add(&ht, hash(&val[i], NULL), &val[i]);
+       }
+
+       htable_copy(&ht2, &ht);
+       htable_clear(&ht);
+
+       for (i = 0; i < NUM_VALS; i++)
+               ok1(htable_get(&ht2, hash(&i, NULL), cmp, &i) == &val[i]);
+       htable_clear(&ht2);
+
+       return exit_status();
+}