test.c

#include <assert.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>

#include "base45.h"

void check(char *in, char *out)
{
    char enc[1024];
    unsigned char dec[1024];
    size_t elen = sizeof(enc), dlen = sizeof(dec);
    bzero(enc, 1024);
    bzero(dec, 1024);

    assert(0 == base45_encode(enc, &elen, (const unsigned char *)in, strlen(in)));
    assert(elen == strlen(out));
    assert(0 == strcmp(enc, out));

    assert(0 == base45_decode(dec, &dlen, out, strlen(out)));
    assert(dlen == strlen(in));
    assert(0 == bcmp(dec, in, dlen));

    printf("base45(\"%s\") -> \"%s\"\n", (char *)dec, enc);
}

int main(int argc, char **argv)
{
    check("Hello!!", "%69 VD92EX0");
    check("base-45", "UJCLQE7W581");
    check("ietf!", "QED8WEX0");
    check("COVID-19", "-M8*+A%R81A6");
    check("2021 Digital Green Certificates for travel",
          "NF6OF6P34SED-EDAECS34ZKE1$CO345$CBWER.CGPC7WE.OEX.CBJEKWEKEC: C");
}