Simple tvsub_us tests

[disorder] / libtests / t-timeval.c

diff --git a/libtests/t-timeval.c b/libtests/t-timeval.c
new file mode 100644 (file)
index 0000000..3f7beb6
--- /dev/null
+++ b/libtests/t-timeval.c
@@ -0,0 +1,55 @@
+/*
+ * This file is part of DisOrder.
+ * Copyright (C) 2011 Richard Kettlewell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "test.h"
+#include "timeval.h"
+
+static struct timeval tv(time_t s, unsigned long us) {
+  struct timeval r;
+  r.tv_sec = s;
+  r.tv_usec = us;
+  return r;
+}
+
+static void test_timeval(void) {
+  check_integer(tvsub_us(tv(0, 0), 
+                         tv(0, 0)),
+                0);
+  check_integer(tvsub_us(tv(1, 0), 
+                         tv(0, 0)),
+                1000000);
+  check_integer(tvsub_us(tv(0, 0), 
+                         tv(1, 0)),
+                -1000000);
+  check_integer(tvsub_us(tv(1397621862, 1), 
+                         tv(1397621861, 2)),
+                999999);
+  check_integer(tvsub_us(tv(1397621861, 2), 
+                         tv(1397621862, 1)),
+                -999999);
+}
+
+TEST(timeval);
+
+/*
+Local Variables:
+c-basic-offset:2
+comment-column:40
+fill-column:79
+indent-tabs-mode:nil
+End:
+*/