Improved clock() test to verify time() <-> clock().

1 files changed, 3 insertions, 2 deletions

diff --git a/tests/time/src.c b/tests/time/src.c
index 94eb6a3f..9517b74c 100644
--- a/tests/time/src.c
+++ b/tests/time/src.c
@@ -92,10 +92,11 @@ int main() {
   printf("old asctime again: %s", formatted);
 
   // Verify that clock() advances.
+  time_t start_t = time(NULL);
   clock_t start = clock();
   printf("clock(start): %d\n", start >= 0);
-  while (clock() - start < 50000); // Poor man's sleep().
-  printf("clock(end): %d\n", clock() - start >= 50000);
+  while (clock() - start < 2 * CLOCKS_PER_SEC); // Poor man's sleep().
+  printf("clock(end): %d\n", time(NULL) - start_t == 2);
 
   // Verify that ctime_r(x, buf) is equivalent to asctime_r(localtime(x), buf).
   time_t t7 = time(0);