X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-parse-datetime.c;h=22fe9bc1194ac55edcab23eb4cdd8ec2df2d7efd;hb=5bf73fbe89c75118e5e9a53e4b88a57729d26964;hp=45dbae6760b7bedf4bda8b16b6c00268a3c3b359;hpb=4b6dad7e35019625bd5eb30796beebac099a7422;p=gnulib.git

diff --git a/tests/test-parse-datetime.c b/tests/test-parse-datetime.c
index 45dbae676..22fe9bc11 100644
--- a/tests/test-parse-datetime.c
+++ b/tests/test-parse-datetime.c
@@ -36,7 +36,7 @@
 #define LOG(str, now, res) (void) 0
 #endif
 
-static const char* const day_table[] =
+static const char *const day_table[] =
 {
   "SUNDAY",
   "MONDAY",
@@ -48,17 +48,169 @@ static const char* const day_table[] =
   NULL
 };
 
+
+#if ! HAVE_TM_GMTOFF
+/* Shift A right by B bits portably, by dividing A by 2**B and
+   truncating towards minus infinity.  A and B should be free of side
+   effects, and B should be in the range 0 <= B <= INT_BITS - 2, where
+   INT_BITS is the number of useful bits in an int.  GNU code can
+   assume that INT_BITS is at least 32.
+
+   ISO C99 says that A >> B is implementation-defined if A < 0.  Some
+   implementations (e.g., UNICOS 9.0 on a Cray Y-MP EL) don't shift
+   right in the usual way when A < 0, so SHR falls back on division if
+   ordinary A >> B doesn't seem to be the usual signed shift.  */
+#define SHR(a, b)       \
+  (-1 >> 1 == -1        \
+   ? (a) >> (b)         \
+   : (a) / (1 << (b)) - ((a) % (1 << (b)) < 0))
+
+#define TM_YEAR_BASE 1900
+
+/* Yield the difference between *A and *B,
+   measured in seconds, ignoring leap seconds.
+   The body of this function is taken directly from the GNU C Library;
+   see src/strftime.c.  */
+static long int
+tm_diff (struct tm const *a, struct tm const *b)
+{
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid int overflow in leap day calculations.  */
+  int a4 = SHR (a->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (a->tm_year & 3);
+  int b4 = SHR (b->tm_year, 2) + SHR (TM_YEAR_BASE, 2) - ! (b->tm_year & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = SHR (a100, 2);
+  int b400 = SHR (b100, 2);
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+  long int ayear = a->tm_year;
+  long int years = ayear - b->tm_year;
+  long int days = (365 * years + intervening_leap_days
+                   + (a->tm_yday - b->tm_yday));
+  return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+                + (a->tm_min - b->tm_min))
+          + (a->tm_sec - b->tm_sec));
+}
+#endif /* ! HAVE_TM_GMTOFF */
+
+static long
+gmt_offset (time_t s)
+{
+  long gmtoff;
+
+#if !HAVE_TM_GMTOFF
+  struct tm tm_local = *localtime (&s);
+  struct tm tm_gmt   = *gmtime (&s);
+
+  gmtoff = tm_diff (&tm_local, &tm_gmt);
+#else
+  gmtoff = localtime (&s)->tm_gmtoff;
+#endif
+
+  return gmtoff;
+}
+
 int
 main (int argc _GL_UNUSED, char **argv)
 {
   struct timespec result;
   struct timespec result2;
+  struct timespec expected;
   struct timespec now;
   const char *p;
   int i;
+  long gmtoff;
+  time_t ref_time = 1304250918;
 
   set_program_name (argv[0]);
 
+  gmtoff = gmt_offset (ref_time);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, local time zone */
+  p = "2011-05-01T11:55:18";
+  expected.tv_sec = ref_time - gmtoff;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, local time zone */
+  p = "2011-05-01 11:55:18";
+  expected.tv_sec = ref_time - gmtoff;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601, extended date and time of day representation,
+     'T' separator, UTC */
+  p = "2011-05-01T11:55:18Z";
+  expected.tv_sec = ref_time;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601, extended date and time of day representation,
+     ' ' separator, UTC */
+  p = "2011-05-01 11:55:18Z";
+  expected.tv_sec = ref_time;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, w/UTC offset */
+  p = "2011-05-01T11:55:18-07:00";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, w/UTC offset */
+  p = "2011-05-01 11:55:18-07:00";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
+  /* ISO 8601 extended date and time of day representation,
+     'T' separator, w/hour only UTC offset */
+  p = "2011-05-01T11:55:18-07";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+  /* ISO 8601 extended date and time of day representation,
+     ' ' separator, w/hour only UTC offset */
+  p = "2011-05-01 11:55:18-07";
+  expected.tv_sec = 1304276118;
+  expected.tv_nsec = 0;
+  ASSERT (parse_datetime (&result, p, 0));
+  LOG (p, expected, result);
+  ASSERT (expected.tv_sec == result.tv_sec
+          && expected.tv_nsec == result.tv_nsec);
+
+
   now.tv_sec = 4711;
   now.tv_nsec = 1267;
   p = "now";
@@ -173,6 +325,8 @@ main (int argc _GL_UNUSED, char **argv)
   ASSERT (!parse_datetime (&result, p, &now));
   p = "UTC+4:00 tomorrow ago";
   ASSERT (!parse_datetime (&result, p, &now));
+  p = "UTC+4:00 tomorrow hence";
+  ASSERT (!parse_datetime (&result, p, &now));
   p = "UTC+4:00 40 now ago";
   ASSERT (!parse_datetime (&result, p, &now));
   p = "UTC+4:00 last tomorrow";
@@ -191,6 +345,11 @@ main (int argc _GL_UNUSED, char **argv)
   LOG (p, now, result2);
   ASSERT (result.tv_sec == result2.tv_sec
           && result.tv_nsec == result2.tv_nsec);
+  p = "UTC+400 1 day hence";
+  ASSERT (parse_datetime (&result2, p, &now));
+  LOG (p, now, result2);
+  ASSERT (result.tv_sec == result2.tv_sec
+          && result.tv_nsec == result2.tv_nsec);
   now.tv_sec = 4711;
   now.tv_nsec = 1267;
   p = "UTC+400 yesterday";