Add a test for public variants of bn2bin()
We test with binary input of length 1, length 0, and NULL input with length 0
@@ -2219,6 +2219,36 @@ static int test_mpi(int i)
return st;
}
+static int test_bin2zero(void)
+{
+ unsigned char input[] = { 0 };
+ BIGNUM *zbn = NULL;
+ int ret = 0;
+
+ if (!TEST_ptr(zbn = BN_new()))
+ goto err;
+
+#define zerotest(fn) \
+ if (!TEST_ptr(fn(input, 1, zbn)) \
+ || !TEST_true(BN_is_zero(zbn)) \
+ || !TEST_ptr(fn(input, 0, zbn)) \
+ || !TEST_true(BN_is_zero(zbn)) \
+ || !TEST_ptr(fn(NULL, 0, zbn)) \
+ || !TEST_true(BN_is_zero(zbn))) \
+ goto err
+
+ zerotest(BN_bin2bn);
+ zerotest(BN_signed_bin2bn);
+ zerotest(BN_lebin2bn);
+ zerotest(BN_signed_lebin2bn);
+#undef zerotest
+
+ ret = 1;
+ err:
+ BN_free(zbn);
+ return ret;
+}
+
static int test_rand(void)
{
BIGNUM *bn = NULL;
@@ -3213,6 +3243,7 @@ int setup_tests(void)
ADD_TEST(test_dec2bn);
ADD_TEST(test_hex2bn);
ADD_TEST(test_asc2bn);
+ ADD_TEST(test_bin2zero);
ADD_ALL_TESTS(test_mpi, (int)OSSL_NELEM(kMPITests));
ADD_ALL_TESTS(test_bn2signed, (int)OSSL_NELEM(kSignedTests_BE));
ADD_TEST(test_negzero);
