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-rw-r--r--test/time/tst-mktime.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/test/time/tst-mktime.c b/test/time/tst-mktime.c
new file mode 100644
index 000000000..416a85616
--- /dev/null
+++ b/test/time/tst-mktime.c
@@ -0,0 +1,70 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+int
+main (void)
+{
+ struct tm time_str, *tm;
+ time_t t;
+ char daybuf[20];
+ int result;
+
+ time_str.tm_year = 2001 - 1900;
+ time_str.tm_mon = 7 - 1;
+ time_str.tm_mday = 4;
+ time_str.tm_hour = 0;
+ time_str.tm_min = 0;
+ time_str.tm_sec = 1;
+ time_str.tm_isdst = -1;
+
+ if (mktime (&time_str) == -1)
+ {
+ (void) puts ("-unknown-");
+ result = 1;
+ }
+ else
+ {
+ (void) strftime (daybuf, sizeof (daybuf), "%A", &time_str);
+ (void) puts (daybuf);
+ result = strcmp (daybuf, "Wednesday") != 0;
+ }
+
+ setenv ("TZ", "EST+5", 1);
+#define EVENING69 1 * 60 * 60 + 2 * 60 + 29
+ t = EVENING69;
+ tm = localtime (&t);
+ if (tm == NULL)
+ {
+ (void) puts ("localtime returned NULL");
+ result = 1;
+ }
+ else
+ {
+ time_str = *tm;
+ t = mktime (&time_str);
+ if (t != EVENING69)
+ {
+ printf ("mktime returned %ld, expected %d\n",
+ (long) t, EVENING69);
+ result = 1;
+ }
+ else
+ (void) puts ("Dec 31 1969 EST test passed");
+
+ setenv ("TZ", "CET-1", 1);
+ t = mktime (&time_str);
+#define EVENING69_CET (EVENING69 - (5 - -1) * 60 * 60)
+ if (t != EVENING69_CET)
+ {
+ printf ("mktime returned %ld, expected %ld\n",
+ (long) t, (long) EVENING69_CET);
+ result = 1;
+ }
+ else
+ (void) puts ("Dec 31 1969 CET test passed");
+ }
+
+ return result;
+}