Fixes and tests

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 153 insertions, 1 deletions

diff --git a/multimespec.c b/multimespec.c
index ec60c1e..c2a58c1 100644
--- a/multimespec.c
+++ b/multimespec.c
@@ -1,9 +1,10 @@
 /* See LICENSE file for copyright and license details. */
 #include "libsimple.h"
+#ifndef TEST
 
 
 int
-libsimple_multimespec(struct timespec *prod, const struct timespec *multiplicand, int multiplier) /* TODO test */
+libsimple_multimespec(struct timespec *prod, const struct timespec *multiplicand, int multiplier)
 {
 	time_t s = multiplicand->tv_sec;
 	long long int ns = (long long int)(multiplicand->tv_nsec);
@@ -63,3 +64,154 @@ overflow:
 	errno = ERANGE;
 	return -1;
 }
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	struct timespec r, a;
+
+	a.tv_sec = 0, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 0));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 0));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 0));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 0));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 1));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 1));
+	assert(r.tv_sec  == 10);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 1));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 10L);
+
+	a.tv_sec = 10, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 1));
+	assert(r.tv_sec  == 10);
+	assert(r.tv_nsec == 10L);
+
+	a.tv_sec = 0, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 10));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, 10));
+	assert(r.tv_sec  == 100);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 10));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 100L);
+
+	a.tv_sec = 10, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, 10));
+	assert(r.tv_sec  == 100);
+	assert(r.tv_nsec == 100L);
+
+	a.tv_sec = 0, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, -1));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, -1));
+	assert(r.tv_sec  == -10);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, -1));
+	assert(r.tv_sec  == -1);
+	assert(r.tv_nsec == 1000000000L - 10L);
+
+	a.tv_sec = 10, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, -1));
+	assert(r.tv_sec  == -11);
+	assert(r.tv_nsec == 1000000000L - 10L);
+
+	a.tv_sec = 0, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, -10));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 10, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, -10));
+	assert(r.tv_sec  == -100);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = 0, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, -10));
+	assert(r.tv_sec  == -1);
+	assert(r.tv_nsec == 1000000000L - 100L);
+
+	a.tv_sec = 10, a.tv_nsec = 10L;
+	assert(!libsimple_multimespec(&r, &a, -10));
+	assert(r.tv_sec  == -101);
+	assert(r.tv_nsec == 1000000000L - 100L);
+
+	a.tv_sec = TIME_MAX, a.tv_nsec = 999999999L;
+	assert(!libsimple_multimespec(&r, &a, 0));
+	assert(r.tv_sec  == 0);
+	assert(r.tv_nsec == 0);
+
+	a.tv_sec = TIME_MAX, a.tv_nsec = 999999999L;
+	assert(!libsimple_multimespec(&r, &a, 1));
+	assert(r.tv_sec  == TIME_MAX);
+	assert(r.tv_nsec == 999999999L);
+
+	a.tv_sec = TIME_MAX, a.tv_nsec = 0L;
+	assert(libsimple_multimespec(&r, &a, 2) == -1 && errno == ERANGE);
+	assert(r.tv_sec  == TIME_MAX);
+	assert(r.tv_nsec == 999999999L);
+
+	a.tv_sec = TIME_MAX, a.tv_nsec = 0L;
+	assert(libsimple_multimespec(&r, &a, -2) == -1 && errno == ERANGE);
+	assert(r.tv_sec  == TIME_MIN);
+	assert(r.tv_nsec == 0L);
+
+	a.tv_sec = TIME_MAX, a.tv_nsec = 0L;
+	assert(!libsimple_multimespec(&r, &a, -1));
+	assert(r.tv_sec  == -TIME_MAX);
+	assert(r.tv_nsec == 0L);
+
+	if (-TIME_MAX > TIME_MIN) {
+		a.tv_sec = TIME_MAX, a.tv_nsec = 999999999L;
+		assert(!libsimple_multimespec(&r, &a, -1));
+		assert(r.tv_sec  == -TIME_MAX - (time_t)1);
+		assert(r.tv_nsec == 1L);
+	}
+
+	a.tv_sec = 10, a.tv_nsec = 100000001L;
+	assert(!libsimple_multimespec(&r, &a, 10));
+	assert(r.tv_sec  == 101);
+	assert(r.tv_nsec == 10L);
+
+	return 0;
+}
+
+#endif