Method check_openssl_hmac

Lib/test/test_support.py:915–925

Check that OpenSSL HMAC interface is enabled/disabled.

(self, name, *, disabled=True)

                _ = do_hash(b"")

    def check_openssl_hmac(self, name, *, disabled=True):
        """Check that OpenSSL HMAC interface is enabled/disabled."""
        if name in hashlib_helper.NON_HMAC_DIGEST_NAMES:
            # HMAC-BLAKE and HMAC-SHAKE raise a ValueError as they are not
            # supported at all (they do not make any sense in practice).
            with self.assertRaises(ValueError):
                self._hashlib.hmac_digest(b"", b"", name)
        else:
            with self.check_context(disabled):
                _ = self._hashlib.hmac_digest(b"", b"", name)
        # OpenSSL does not provide one-shot explicit HMAC functions

    def check_builtin_hash(self, name, *, disabled=True):
        """Check that HACL* HASH interface is enabled/disabled."""