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// Copyright (c) 2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <bech32.h>
#include <test/fuzz/fuzz.h>
#include <test/util/str.h>
#include <util/strencodings.h>
#include <cassert>
#include <cstdint>
#include <string>
#include <utility>
#include <vector>
void test_one_input(const std::vector<uint8_t>& buffer)
{
const std::string random_string(buffer.begin(), buffer.end());
const auto r1 = bech32::Decode(random_string);
if (r1.hrp.empty()) {
assert(r1.encoding == bech32::Encoding::INVALID);
assert(r1.data.empty());
} else {
assert(r1.encoding != bech32::Encoding::INVALID);
const std::string reencoded = bech32::Encode(r1.encoding, r1.hrp, r1.data);
assert(CaseInsensitiveEqual(random_string, reencoded));
}
std::vector<unsigned char> input;
ConvertBits<8, 5, true>([&](unsigned char c) { input.push_back(c); }, buffer.begin(), buffer.end());
if (input.size() + 3 + 6 <= 90) {
// If it's possible to encode input in Bech32(m) without exceeding the 90-character limit:
for (auto encoding : {bech32::Encoding::BECH32, bech32::Encoding::BECH32M}) {
const std::string encoded = bech32::Encode(encoding, "bc", input);
assert(!encoded.empty());
const auto r2 = bech32::Decode(encoded);
assert(r2.encoding == encoding);
assert(r2.hrp == "bc");
assert(r2.data == input);
}
}
}
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