Add tests and man pages

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

1 files changed, 42 insertions, 3 deletions

diff --git a/strtohh.c b/strtohh.c
index da68c86..3fb21b8 100644
--- a/strtohh.c
+++ b/strtohh.c
@@ -4,13 +4,13 @@
 
 
 signed char
-libsimple_strtohh(const char *restrict nptr, char **restrict end, int base) /* TODO test, man */
+libsimple_strtohh(const char *restrict nptr, char **restrict end, int base)
 {
 	signed long int r = strtol(nptr, end, base);
-	if(r < SCHAR_MIN) {
+	if (r < SCHAR_MIN) {
 		r = SCHAR_MIN;
 		errno = ERANGE;
-	} else if(r > SCHAR_MAX) {
+	} else if (r > SCHAR_MAX) {
 		r = SCHAR_MAX;
 		errno = ERANGE;
 	}
@@ -21,9 +21,48 @@ libsimple_strtohh(const char *restrict nptr, char **restrict end, int base) /* T
 #else
 #include "test.h"
 
+static void
+add_one(char *buf)
+{
+	char *p = strchr(buf, '\0');
+	while (*--p == '9')
+		*p = '0';
+	*p += 1;
+}
+
 int
 main(void)
 {
+	char str[128];
+	char *e;
+	sprintf(str, "0x%x", (unsigned int)SCHAR_MAX);
+	errno = 0;
+	assert(strtohh(str, NULL, 0) == SCHAR_MAX && !errno);
+	assert(strtohh(str, NULL, 16) == SCHAR_MAX && !errno);
+	assert(strtohh(&str[2], NULL, 16) == SCHAR_MAX && !errno);
+	assert(strtohh(str, NULL, 10) == 0 && !errno);
+	assert(strtohh(str, &e, 0) == SCHAR_MAX && !*e && !errno);
+	assert(strtohh(str, &e, 10) == 0 && *e == 'x' && !errno);
+	sprintf(str, "0x%x ", (unsigned int)SCHAR_MAX);
+	assert(strtohh(str, &e, 16) == SCHAR_MAX && *e == ' ' && !errno);
+	sprintf(str, "-%i", SCHAR_MAX);
+	assert(strtohh(&str[1], &e, 10) == SCHAR_MAX && !*e && !errno);
+	assert(strtohh(str, &e, 10) == -SCHAR_MAX && !*e && !errno);
+	sprintf(str, "%i", SCHAR_MIN);
+	assert(strtohh(str, &e, 10) == SCHAR_MIN && !*e && !errno);
+	assert(strtohh("12", &e, 10) == 12 && !*e && !errno);
+	assert(strtohh("12", &e, 8) == 012 && !*e && !errno);
+	assert(strtohh("012", &e, 0) == 012 && !*e && !errno);
+	sprintf(str, "%i", SCHAR_MAX);
+	add_one(str);
+	assert(strtohh(str, &e, 10) == SCHAR_MAX && !*e && errno == ERANGE);
+	errno = 0;
+	sprintf(str, "%i", SCHAR_MIN);
+	add_one(str);
+	assert(strtohh(str, &e, 10) == SCHAR_MIN && !*e && errno == ERANGE);
+	errno = 0;
+	assert(!strtohh("1", &e, -10000) && errno == EINVAL);
+	errno = 0;
 	return 0;
 }