add self-test of getdate module

[Simon Josefsson]

There seems to be some changes in the getdate module going on, and I
want to make sure some of the strings that I rely on will continue to
work so I installed a self test.  Feel free to extend it.

Patching the getdate module could easily introduce unwanted
side-effects, so getting more complete self-tests seems useful.

/Simon

>From 5e673c40112701e37d600116ae4deda05db3d36f Mon Sep 17 00:00:00 2001
From: Simon Josefsson <address@hidden>
Date: Tue, 1 Jul 2008 14:55:29 +0200
Subject: [PATCH] Add self-test for getdate module.
 * modules/getdate-tests: New file.
 * tests/test-getdate.c: New file.

---
 ChangeLog             |    6 +++
 modules/getdate-tests |   11 ++++++
 tests/test-getdate.c  |   89 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+), 0 deletions(-)
 create mode 100644 modules/getdate-tests
 create mode 100644 tests/test-getdate.c

diff --git a/ChangeLog b/ChangeLog
index 7a8b2dd..b9076e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-07-01  Simon Josefsson  <address@hidden>
+
+       Add self-test for getdate module.
+       * modules/getdate-tests: New file.
+       * tests/test-getdate.c: New file.
+
 2008-06-29  Bruno Haible  <address@hidden>
 
        * gnulib-tool (func_import): Put gnulib-comp.m4 into .cvsignore or
diff --git a/modules/getdate-tests b/modules/getdate-tests
new file mode 100644
index 0000000..4b5e344
--- /dev/null
+++ b/modules/getdate-tests
@@ -0,0 +1,11 @@
+Files:
+tests/test-getdate.c
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-getdate
+check_PROGRAMS += test-getdate
+test_getdate_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME)
diff --git a/tests/test-getdate.c b/tests/test-getdate.c
new file mode 100644
index 0000000..5bf3728
--- /dev/null
+++ b/tests/test-getdate.c
@@ -0,0 +1,89 @@
+/* Test of getdate() function.
+   Copyright (C) 2008 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
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Simon Josefsson <address@hidden>, 2008.  */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "getdate.h"
+
+#define ASSERT(expr)                                                   \
+  do                                                                   \
+    {                                                                  \
+      if (!(expr))                                                     \
+       {                                                               \
+         fprintf (stderr, "%s:%d: assertion failed\n",                 \
+                  __FILE__, __LINE__);                                 \
+         fflush (stderr);                                              \
+         abort ();                                                     \
+       }                                                               \
+    }                                                                  \
+  while (0)
+
+#ifdef DEBUG
+#define LOG(str, now, res)                                             \
+  printf ("string `%s' diff %d %d\n",                  \
+         str, res.tv_sec - now.tv_sec, res.tv_nsec - now.tv_nsec);
+#else
+#define LOG(str, now, res) 0
+#endif
+
+int
+main (int argc, char **argv)
+{
+  bool ret;
+  struct timespec result;
+  struct timespec now;
+  const char *p;
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "now";
+  ASSERT (get_date (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec == result.tv_sec && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "tomorrow";
+  ASSERT (get_date (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec + 24 * 60 * 60 == result.tv_sec
+         && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "yesterday";
+  ASSERT (get_date (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec - 24 * 60 * 60 == result.tv_sec
+         && now.tv_nsec == result.tv_nsec);
+
+  now.tv_sec = 4711;
+  now.tv_nsec = 1267;
+  p = "4 hours";
+  ASSERT (get_date (&result, p, &now));
+  LOG (p, now, result);
+  ASSERT (now.tv_sec + 4 * 60 * 60 == result.tv_sec
+         && now.tv_nsec == result.tv_nsec);
+
+  return 0;
+}
-- 
1.5.6