From e59072005414970eda98dee2acf22487805e091c Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sun, 26 Aug 2018 14:31:09 +0200
Subject: Tests and fixes
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 timespec2timeval.c | 111 +++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 95 insertions(+), 16 deletions(-)

(limited to 'timespec2timeval.c')

diff --git a/timespec2timeval.c b/timespec2timeval.c
index 282f794..92c9b3e 100644
--- a/timespec2timeval.c
+++ b/timespec2timeval.c
@@ -1,23 +1,102 @@
 /* See LICENSE file for copyright and license details. */
 #include "libsimple.h"
+#ifndef TEST
 
 
 int
-libsimple_timespec2timeval(struct timeval *restrict tv, const struct timespec *restrict ts) /* TODO test */
+libsimple_timespec2timeval(struct timeval *restrict tv, const struct timespec *restrict ts)
 {
-        tv->tv_sec = ts->tv_sec;
-        tv->tv_usec = ts->tv_nsec / 1000L;
-        if ((ts->tv_nsec % 1000L) >= 500L) {
-                if (++(tv->tv_usec) == 1000000L) {
-                        tv->tv_usec = 0;
-                        if (tv->tv_sec == TIME_MAX) {
-                                tv->tv_usec = 999999L;
-                                errno = EOVERFLOW;
-                                return -1;
-                        } else {
-                                tv->tv_sec += 1;
-                        }
-                }
-        }
-        return 0;
+	tv->tv_sec = ts->tv_sec;
+	tv->tv_usec = ts->tv_nsec / 1000L;
+	if ((ts->tv_nsec % 1000L) >= 500L) {
+		if (++(tv->tv_usec) == 1000000L) {
+			tv->tv_usec = 0;
+			if (tv->tv_sec == TIME_MAX) {
+				tv->tv_usec = 999999L;
+				errno = EOVERFLOW;
+				return -1;
+			} else {
+				tv->tv_sec += 1;
+			}
+		}
+	}
+	return 0;
 }
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	struct timeval tv;
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){0, 0}));
+	assert(tv.tv_sec  == 0);
+	assert(tv.tv_usec == 0);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){100, 0}));
+	assert(tv.tv_sec  == 100);
+	assert(tv.tv_usec == 0);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){100, 100000000L}));
+	assert(tv.tv_sec  == 100);
+	assert(tv.tv_usec == 100000L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){100, 100000400L}));
+	assert(tv.tv_sec  == 100);
+	assert(tv.tv_usec == 100000L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){100, 100000500L}));
+	assert(tv.tv_sec  == 100);
+	assert(tv.tv_usec == 100001L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){100, 999999999L}));
+	assert(tv.tv_sec  == 101);
+	assert(tv.tv_usec == 0L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){-100, 0}));
+	assert(tv.tv_sec  == -100);
+	assert(tv.tv_usec == 0);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){-100, 100000000L}));
+	assert(tv.tv_sec  == -100);
+	assert(tv.tv_usec == 100000L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){-100, 100000400L}));
+	assert(tv.tv_sec  == -100);
+	assert(tv.tv_usec == 100000L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){-100, 100000500L}));
+	assert(tv.tv_sec  == -100);
+	assert(tv.tv_usec == 100001L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){-100, 999999999L}));
+	assert(tv.tv_sec  == -99);
+	assert(tv.tv_usec == 0L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){TIME_MAX, 100000500L}));
+	assert(tv.tv_sec  == TIME_MAX);
+	assert(tv.tv_usec == 100001L);
+
+	assert(libsimple_timespec2timeval(&tv, &(struct timespec){TIME_MAX, 999999500L}) == -1 && errno == EOVERFLOW);
+	assert(tv.tv_sec  == TIME_MAX);
+	assert(tv.tv_usec == 999999L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){TIME_MIN, 100000500L}));
+	assert(tv.tv_sec  == TIME_MIN);
+	assert(tv.tv_usec == 100001L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){TIME_MIN, 0L}));
+	assert(tv.tv_sec  == TIME_MIN);
+	assert(tv.tv_usec == 0L);
+
+	assert(!libsimple_timespec2timeval(&tv, &(struct timespec){TIME_MIN, 500L}));
+	assert(tv.tv_sec  == TIME_MIN);
+	assert(tv.tv_usec == 1L);
+
+	return 0;
+}
+
+#endif
-- 
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