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-rw-r--r--time/test-tz.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/time/test-tz.c b/time/test-tz.c
new file mode 100644
index 0000000000..47565cedec
--- /dev/null
+++ b/time/test-tz.c
@@ -0,0 +1,57 @@
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#include <stdio.h>
+
+struct {
+ const char * env;
+ time_t expected;
+} tests[] = {
+ {"TZ=MST", 832935315},
+ {"TZ=", 832910115},
+ {"TZ=:UTC", 832910115},
+ {"TZ=UTC", 832910115},
+ {"TZ=UTC0", 832910115}
+};
+
+
+int
+main(int argc, char ** argv)
+{
+ int errors = 0;
+ struct tm tm;
+ time_t t;
+ int i;
+
+ memset (&tm, 0, sizeof (tm));
+ tm.tm_isdst = 0;
+ tm.tm_year = 96; /* years since 1900 */
+ tm.tm_mon = 4;
+ tm.tm_mday = 24;
+ tm.tm_hour = 3;
+ tm.tm_min = 55;
+ tm.tm_sec = 15;
+
+ for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
+ {
+ putenv (tests[i].env);
+ tzset ();
+ t = mktime(&tm);
+ if (t != tests[i].expected)
+ {
+ printf ("%s: flunked test %d (expected %lu, got %lu)\n",
+ argv[0], i, (long) tests[i].expected, (long) t);
+ ++errors;
+ }
+ }
+ if (errors == 0)
+ {
+ puts ("No errors.");
+ exit (EXIT_SUCCESS);
+ }
+ else
+ {
+ printf ("%d errors.\n", errors);
+ exit (EXIT_FAILURE);
+ }
+}