1 files changed, 49 insertions, 0 deletions
diff --git a/tests/unit/mongo/utils/oid_new.c b/tests/unit/mongo/utils/oid_new.c
new file mode 100644
index 0000000..b8f7f0a
--- /dev/null
+++ b/tests/unit/mongo/utils/oid_new.c
@@ -0,0 +1,49 @@
+#include "tap.h"
+#include "test.h"
+#include "mongo-utils.h"
+
+#include <string.h>
+#include <unistd.h>
+
+void
+test_mongo_utils_oid_new (void)
+{
+  guint8 *oid1, *oid2, *oid3;
+  gchar *oid1_s, *oid2_s;
+
+  ok (mongo_util_oid_new (0) == NULL,
+      "mongo_util_oid_new() should fail before mongo_util_oid_init()");
+
+  mongo_util_oid_init (0);
+  ok ((oid1 = mongo_util_oid_new (1)) != NULL,
+      "mongo_util_oid_new() works");
+  cmp_ok (oid1[11], "==", 1,
+          "mongo_util_oid_new() returns an OID with the currect seq ID");
+
+  oid2 = mongo_util_oid_new (2);
+  oid3 = mongo_util_oid_new (2);
+
+  ok (memcmp (oid2, oid1, 12) > 0,
+      "OIDs with higher sequence ID sort higher");
+  ok (memcmp (oid2, oid3, 12) == 0,
+      "OIDs with the same sequence ID are equal (within a second)");
+  g_free (oid2);
+  g_free (oid3);
+
+  sleep (2);
+  oid2 = mongo_util_oid_new (0);
+
+  oid1_s = mongo_util_oid_as_string (oid1);
+  oid2_s = mongo_util_oid_as_string (oid2);
+
+  ok (memcmp (oid2, oid1, 12) > 0,
+      "OIDs with the same sequence ID, a few seconds later sort higher; "
+      "oid1=%s; oid2=%s", oid1_s, oid2_s);
+
+  g_free (oid2_s);
+  g_free (oid1_s);
+  g_free (oid2);
+  g_free (oid1);
+}
+
+RUN_TEST (6, mongo_utils_oid_new);