@ -15,3 +15,17 @@ size_t str_chr(const char *in, char needle) {
}
return (size_t)(t-in);
#ifdef UNITTEST
#include <assert.h>
#include <string.h>
int main() {
char buf[100];
strcpy(buf,"abcdefghijklmnopqrstuvwxyz");
size_t i;
for (i=0; i<26; ++i)
assert(str_chr(buf,buf[i])==i);
assert(str_chr(buf,'X')==26);
#endif
@ -21,3 +21,15 @@ int str_diff(const char* a, const char* b) {
return j;
assert(str_diff("foo","foo")==0);
assert(str_diff("foo","fob")==('o'-'b'));
assert(str_diff("foo","foox")==(-'x'));
assert(str_diff("foox","foo")=='x');