tdb2: use immobile free buckets, rename tests to show some ordering.

[ccan] / ccan / tdb2 / test / run-001-encode.c

diff --git a/ccan/tdb2/test/run-001-encode.c b/ccan/tdb2/test/run-001-encode.c
new file mode 100644 (file)
index 0000000..d1b124e
--- /dev/null
+++ b/ccan/tdb2/test/run-001-encode.c
@@ -0,0 +1,47 @@
+#include <ccan/tdb2/tdb.c>
+#include <ccan/tdb2/free.c>
+#include <ccan/tdb2/lock.c>
+#include <ccan/tdb2/io.c>
+#include <ccan/tap/tap.h>
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+       unsigned int i;
+       struct tdb_used_record rec;
+       struct tdb_context tdb = { .log = tap_log_fn, .log_priv = NULL };
+
+       plan_tests(64 + 32 + 48*7 + 1);
+
+       /* We should be able to encode any data value. */
+       for (i = 0; i < 64; i++)
+               ok1(set_header(&tdb, &rec, 0, 1ULL << i, 1ULL << i, 0, 0)
+                   == 0);
+
+       /* And any key and data with < 64 bits between them. */
+       for (i = 0; i < 32; i++) {
+               tdb_len_t dlen = 1ULL >> (63 - i), klen = 1ULL << i;
+               ok1(set_header(&tdb, &rec, klen, dlen, klen + dlen, 0, 0)
+                   == 0);
+       }
+
+       /* We should neatly encode all values. */
+       for (i = 0; i < 48; i++) {
+               uint64_t h = 1ULL << (i < 5 ? 63 - i : 63 - 4);
+               uint64_t klen = 1ULL << (i < 16 ? i : 15);
+               uint64_t dlen = 1ULL << i;
+               uint64_t xlen = 1ULL << (i < 32 ? i : 31);
+               uint64_t zbits = 1ULL << (i < 6 ? i : 5);
+               ok1(set_header(&tdb, &rec, klen, dlen, klen + dlen + xlen, h,
+                              zbits)
+                   == 0);
+               ok1(rec_key_length(&rec) == klen);
+               ok1(rec_data_length(&rec) == dlen);
+               ok1(rec_extra_padding(&rec) == xlen);
+               ok1((uint64_t)rec_hash(&rec) << (64 - 5) == h);
+               ok1(rec_zone_bits(&rec) == zbits);
+               ok1(rec_magic(&rec) == TDB_MAGIC);
+       }
+       ok1(tap_log_messages == 0);
+       return exit_status();
+}