ntdb: next-generation trivial key-value database

[ccan] / ccan / ntdb / test / run-seed.c

diff --git a/ccan/ntdb/test/run-seed.c b/ccan/ntdb/test/run-seed.c
new file mode 100644 (file)
index 0000000..5d74dbc
--- /dev/null
+++ b/ccan/ntdb/test/run-seed.c
@@ -0,0 +1,61 @@
+#include "ntdb-source.h"
+#include "tap-interface.h"
+#include "logging.h"
+
+static int log_count = 0;
+
+/* Normally we get a log when setting random seed. */
+static void my_log_fn(struct ntdb_context *ntdb,
+                     enum ntdb_log_level level,
+                     enum NTDB_ERROR ecode,
+                     const char *message, void *priv)
+{
+       log_count++;
+}
+
+static union ntdb_attribute log_attr = {
+       .log = { .base = { .attr = NTDB_ATTRIBUTE_LOG },
+                .fn = my_log_fn }
+};
+
+int main(int argc, char *argv[])
+{
+       unsigned int i;
+       struct ntdb_context *ntdb;
+       union ntdb_attribute attr;
+       int flags[] = { NTDB_INTERNAL, NTDB_DEFAULT, NTDB_NOMMAP,
+                       NTDB_INTERNAL|NTDB_CONVERT, NTDB_CONVERT,
+                       NTDB_NOMMAP|NTDB_CONVERT };
+
+       attr.seed.base.attr = NTDB_ATTRIBUTE_SEED;
+       attr.seed.base.next = &log_attr;
+       attr.seed.seed = 42;
+
+       plan_tests(sizeof(flags) / sizeof(flags[0]) * 4 + 4 * 3);
+       for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+               struct ntdb_header hdr;
+               int fd;
+               ntdb = ntdb_open("run-seed.ntdb", flags[i]|MAYBE_NOSYNC,
+                              O_RDWR|O_CREAT|O_TRUNC, 0600, &attr);
+               ok1(ntdb);
+               if (!ntdb)
+                       continue;
+               ok1(ntdb_check(ntdb, NULL, NULL) == 0);
+               ok1(ntdb->hash_seed == 42);
+               ok1(log_count == 0);
+               ntdb_close(ntdb);
+
+               if (flags[i] & NTDB_INTERNAL)
+                       continue;
+
+               fd = open("run-seed.ntdb", O_RDONLY);
+               ok1(fd >= 0);
+               ok1(read(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
+               if (flags[i] & NTDB_CONVERT)
+                       ok1(bswap_64(hdr.hash_seed) == 42);
+               else
+                       ok1(hdr.hash_seed == 42);
+               close(fd);
+       }
+       return exit_status();
+}