1 // Copyright (c) 2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <amount.h>
6 #include <policy/feerate.h>
7 #include <test/fuzz/FuzzedDataProvider.h>
8 #include <test/fuzz/fuzz.h>
9 #include <test/fuzz/util.h>
10 
11 #include <cstdint>
12 #include <limits>
13 #include <string>
14 #include <vector>
15 
test_one_input(const std::vector<uint8_t> & buffer)16 void test_one_input(const std::vector<uint8_t>& buffer)
17 {
18     FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
19     const CAmount satoshis_per_k = ConsumeMoney(fuzzed_data_provider);
20     const CFeeRate fee_rate{satoshis_per_k};
21 
22     (void)fee_rate.GetFeePerK();
23     const size_t bytes = fuzzed_data_provider.ConsumeIntegral<size_t>();
24     if (!MultiplicationOverflow(static_cast<int64_t>(bytes), satoshis_per_k) && bytes <= static_cast<uint64_t>(std::numeric_limits<int64_t>::max())) {
25         (void)fee_rate.GetFee(bytes);
26     }
27     (void)fee_rate.ToString();
28 
29     const CAmount another_satoshis_per_k = ConsumeMoney(fuzzed_data_provider);
30     CFeeRate larger_fee_rate{another_satoshis_per_k};
31     larger_fee_rate += fee_rate;
32     if (satoshis_per_k != 0 && another_satoshis_per_k != 0) {
33         assert(fee_rate < larger_fee_rate);
34         assert(!(fee_rate > larger_fee_rate));
35         assert(!(fee_rate == larger_fee_rate));
36         assert(fee_rate <= larger_fee_rate);
37         assert(!(fee_rate >= larger_fee_rate));
38         assert(fee_rate != larger_fee_rate);
39     }
40 }
41