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Add a basic test for BN_bn2dec.

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This would have caught 099e2968ed. This is
a port of the test added in
https://boringssl.googlesource.com/boringssl/+/7c040756178e14a4d181b6d93abb3827c93189c4

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1496)
This commit is contained in:
David Benjamin 2016-08-25 17:45:20 -04:00 committed by Rich Salz
parent 98c1f5b429
commit 8ff70f3326
1 changed files with 52 additions and 0 deletions
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52
test/bntest.c
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@ -83,6 +83,7 @@ int test_gf2m_mod_solve_quad(BIO *bp, BN_CTX *ctx);
int test_kron(BIO *bp, BN_CTX *ctx);
int test_sqrt(BIO *bp, BN_CTX *ctx);
int test_small_prime(BIO *bp, BN_CTX *ctx);
int test_bn2dec(BIO *bp);
int rand_neg(void);
static int results = 0;
@ -260,6 +261,11 @@ int main(int argc, char *argv[])
goto err;
(void)BIO_flush(out);
message(out, "BN_bn2dec");
if (!test_bn2dec(out))
goto err;
(void)BIO_flush(out);
#ifndef OPENSSL_NO_EC2M
message(out, "BN_GF2m_add");
if (!test_gf2m_add(out))
@ -1839,6 +1845,52 @@ int test_small_prime(BIO *bp, BN_CTX *ctx)
return ret;
}
int test_bn2dec(BIO *bp)
{
static const char *bn2dec_tests[] = {
"0",
"1",
"-1",
"100",
"-100",
"123456789012345678901234567890",
"-123456789012345678901234567890",
"123456789012345678901234567890123456789012345678901234567890",
"-123456789012345678901234567890123456789012345678901234567890",
};
int ret = 0;
size_t i;
BIGNUM *bn = NULL;
char *dec = NULL;
for (i = 0; i < OSSL_NELEM(bn2dec_tests); i++) {
if (!BN_dec2bn(&bn, bn2dec_tests[i]))
goto err;
dec = BN_bn2dec(bn);
if (dec == NULL) {
fprintf(stderr, "BN_bn2dec failed on %s.\n", bn2dec_tests[i]);
goto err;
}
if (strcmp(dec, bn2dec_tests[i]) != 0) {
fprintf(stderr, "BN_bn2dec gave %s, wanted %s.\n", dec,
bn2dec_tests[i]);
goto err;
}
OPENSSL_free(dec);
dec = NULL;
}
ret = 1;
err:
BN_free(bn);
OPENSSL_free(dec);
return ret;
}
int test_lshift(BIO *bp, BN_CTX *ctx, BIGNUM *a_)
{
BIGNUM *a, *b, *c, *d;