summaryrefslogtreecommitdiff
path: root/tests/test-gettimeofday.c
diff options
context:
space:
mode:
authorJörg Frings-Fürst <debian@jff.email>2024-03-24 08:54:48 +0100
committerJörg Frings-Fürst <debian@jff.email>2024-03-24 08:54:48 +0100
commit163a663518f33bab48b28431972e580b366b4d49 (patch)
treef518ffabaca4a0b93f0103d617e803792d3b0b43 /tests/test-gettimeofday.c
parent1b3a8d5ad2ea2f099d514d9dd51ebf926a628076 (diff)
parentdd0000f7e25abe6c28d4329d324fd7fcab54094f (diff)
Merge branch 'release/debian/1.2-1'HEADdebian/1.2-1master
Diffstat (limited to 'tests/test-gettimeofday.c')
-rw-r--r--tests/test-gettimeofday.c51
1 files changed, 46 insertions, 5 deletions
diff --git a/tests/test-gettimeofday.c b/tests/test-gettimeofday.c
index 47a5b58f..ea810bd5 100644
--- a/tests/test-gettimeofday.c
+++ b/tests/test-gettimeofday.c
@@ -1,6 +1,5 @@
/*
- * Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
- * Written by Jim Meyering.
+ * Copyright (C) 2005, 2007, 2009-2024 Free Software Foundation, Inc.
*
* 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
@@ -15,6 +14,8 @@
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>. */
+/* Written by Jim Meyering and Bruno Haible. */
+
#include <config.h>
#include <sys/time.h>
@@ -26,10 +27,13 @@ SIGNATURE_CHECK (gettimeofday, int,
#include <time.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
-int
-main (void)
+#include "macros.h"
+
+static void
+test_clobber ()
{
time_t t = 0;
struct tm *lt;
@@ -41,7 +45,44 @@ main (void)
if (memcmp (lt, &saved_lt, sizeof (struct tm)) != 0)
{
fprintf (stderr, "gettimeofday still clobbers the localtime buffer!\n");
- return 1;
+ exit (1);
}
+}
+
+static void
+test_consistency ()
+{
+ struct timeval tv1;
+ time_t tt2;
+ struct timeval tv3;
+ time_t tt4;
+
+ ASSERT (gettimeofday (&tv1, NULL) == 0);
+ tt2 = time (NULL);
+ ASSERT (gettimeofday (&tv3, NULL) == 0);
+ tt4 = time (NULL);
+
+ /* Verify monotonicity of gettimeofday(). */
+ ASSERT (tv1.tv_sec < tv3.tv_sec
+ || (tv1.tv_sec == tv3.tv_sec && tv1.tv_usec <= tv3.tv_usec));
+
+ /* Verify monotonicity of time(). */
+ ASSERT (tt2 <= tt4);
+
+ /* Verify that the tv_sec field of the result is the same as time(NULL). */
+ /* Note: It's here that the dependency to the 'time' module is needed.
+ Without it, this assertion would sometimes fail on glibc systems, see
+ https://sourceware.org/bugzilla/show_bug.cgi?id=30200 */
+ ASSERT (tv1.tv_sec <= tt2);
+ ASSERT (tt2 <= tv3.tv_sec);
+ ASSERT (tv3.tv_sec <= tt4);
+}
+
+int
+main (void)
+{
+ test_clobber ();
+ test_consistency ();
+
return 0;
}