1 files changed, 88 insertions, 0 deletions
diff --git a/test/time/tst-posixtz.c b/test/time/tst-posixtz.c
new file mode 100644
index 000000000..ccba63e5b
--- /dev/null
+++ b/test/time/tst-posixtz.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+struct
+{
+  time_t when;
+  const char *tz;
+  const char *result;
+} tests[] =
+{
+  { 909312849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1998/10/25 21:54:09 dst=1 zone=AEDST" },
+  { 924864849L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1999/04/23 20:54:09 dst=0 zone=AEST" },
+  { 919973892L, "AEST-10AEDST-11,M10.5.0,M3.5.0",
+    "1999/02/26 07:18:12 dst=1 zone=AEDST" },
+  { 909312849L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1998/10/25 05:54:09 dst=0 zone=EST" },
+  { 924864849L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1999/04/23 06:54:09 dst=1 zone=EDT" },
+  { 919973892L, "EST+5EDT,M4.1.0/2,M10.5.0/2",
+    "1999/02/25 15:18:12 dst=0 zone=EST" },
+};
+
+int
+main (void)
+{
+  int result = 0;
+  size_t cnt;
+
+  for (cnt = 0; cnt < sizeof (tests) / sizeof (tests[0]); ++cnt)
+    {
+      char buf[100];
+      struct tm *tmp;
+
+      printf ("TZ = \"%s\", time = %ld => ", tests[cnt].tz, tests[cnt].when);
+      fflush (stdout);
+
+      setenv ("TZ", tests[cnt].tz, 1);
+
+      tmp = localtime (&tests[cnt].when);
+
+      snprintf (buf, sizeof (buf),
+		"%04d/%02d/%02d %02d:%02d:%02d dst=%d zone=%s",
+		tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec, tmp->tm_isdst,
+		tzname[tmp->tm_isdst ? 1 : 0]);
+
+      fputs (buf, stdout);
+
+      if (strcmp (buf, tests[cnt].result) == 0)
+	puts (", OK");
+      else
+	{
+	  result = 1;
+	  puts (", FAIL");
+	}
+    }
+
+  setenv ("TZ", "Universal", 1);
+  localtime (&tests[0].when);
+  printf ("TZ = \"Universal\" daylight %d tzname = { \"%s\", \"%s\" }",
+	  daylight, tzname[0], tzname[1]);
+  if (! daylight)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  setenv ("TZ", "AEST-10AEDST-11,M10.5.0,M3.5.0", 1);
+  tzset ();
+  printf ("TZ = \"AEST-10AEDST-11,M10.5.0,M3.5.0\" daylight %d"
+	  " tzname = { \"%s\", \"%s\" }", daylight, tzname[0], tzname[1]);
+  if (daylight
+      && strcmp (tzname[0], "AEST") == 0 && strcmp (tzname[1], "AEDST") == 0)
+    puts (", OK");
+  else
+    {
+      result = 1;
+      puts (", FAIL");
+    }
+
+  return result;
+}