Add timespec -- add tests for it too.

unittest/test.c

@@ -0,0 +1,22 @@
+#include "test.h"
+
+uint32_t s_test_count_total;
+uint32_t s_test_count_fail;
+
+void test_init() {
+  s_test_count_total = 0;
+  s_test_count_fail  = 0;
+}
+
+uint32_t test_count_total() {
+  return s_test_count_total;
+}
+
+uint32_t test_count_success() {
+  return s_test_count_total - s_test_count_fail;
+}
+
+uint32_t test_count_fail() {
+  return s_test_count_fail;
+}
+