f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
112 lines
4.8 KiB
C++
112 lines
4.8 KiB
C++
/*
|
|
* Copyright (C) 2015-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
|
|
*/
|
|
|
|
#define BOOST_TEST_MODULE core
|
|
|
|
#include <boost/test/unit_test.hpp>
|
|
|
|
#include "utils/murmur_hash.hh"
|
|
#include "bytes.hh"
|
|
#include <seastar/core/format.hh>
|
|
|
|
static const bytes full_sequence("012345678901234567890123456789012345678901234567890123456789");
|
|
|
|
static const uint64_t seed = 0xcafebabe;
|
|
|
|
// Below are pre-calculated results of hashing consecutive prefixes of full_sequence using hash3_x64_128(),
|
|
// staring from an empty prefix.
|
|
std::array<uint64_t,2> prefix_hashes[] = {
|
|
{13907055927958326333ULL, 10701141902926764871ULL},
|
|
{16872847325129109440ULL, 5125572542408278394ULL},
|
|
{11916219991241122015ULL, 747256650753853469ULL},
|
|
{1492790099208671403ULL, 16635411534431524239ULL},
|
|
{16764172998150925140ULL, 7440789969466348974ULL},
|
|
{6846275695158209935ULL, 11251493995290334439ULL},
|
|
{1075204625779168927ULL, 3453614304122336174ULL},
|
|
{1404180555660983881ULL, 13684781009779545989ULL},
|
|
{10185829608361057848ULL, 1102754042417891721ULL},
|
|
{12850382803381855486ULL, 7404649381971707328ULL},
|
|
{972515366528881960ULL, 4507841639019527002ULL},
|
|
{9279316204399455969ULL, 9712180353841837616ULL},
|
|
{16558181491899334208ULL, 17507114537353308311ULL},
|
|
{12977947643557220239ULL, 8334539845739718010ULL},
|
|
{3743840537387886281ULL, 15297576726012815871ULL},
|
|
{10675210326497176757ULL, 11200838847539594424ULL},
|
|
{16363715880225337291ULL, 2866762944263215884ULL},
|
|
{1272769995400892137ULL, 1744366104172354624ULL},
|
|
{17426490373034063702ULL, 12666853004117709655ULL},
|
|
{10757142341798556363ULL, 3984810732374497004ULL},
|
|
{4593020710048021108ULL, 14359610319437287264ULL},
|
|
{18212086870806388719ULL, 7490375939640747191ULL},
|
|
{11209001888824275013ULL, 6491913312740217486ULL},
|
|
{17601044365330203914ULL, 1779402119744049378ULL},
|
|
{3916812090790925532ULL, 17533572508631620015ULL},
|
|
{10113761195332211536ULL, 4163484992388084181ULL},
|
|
{4353425943622404193ULL, 1830165015196477722ULL},
|
|
{3904126367597302219ULL, 7917741892387588561ULL},
|
|
{7077450301176172141ULL, 8070185570157969067ULL},
|
|
{6331768922468785771ULL, 9311778359071820659ULL},
|
|
{7715740891587706229ULL, 16510772505395753023ULL},
|
|
{4510384582422222090ULL, 9352450339278885986ULL},
|
|
{6746132289648898302ULL, 15402380546251654069ULL},
|
|
{1315904697672087497ULL, 2686857386486814319ULL},
|
|
{16122226135709041149ULL, 1278536837434550412ULL},
|
|
{6449104926034509627ULL, 8809488279970194649ULL},
|
|
{9047965986959166273ULL, 14963749820458851455ULL},
|
|
{18095596803119563681ULL, 2806499127062067052ULL},
|
|
{545238237267145238ULL, 4583663570136224396ULL},
|
|
{12335897404061220746ULL, 8643308333771385742ULL},
|
|
{15016951849151361171ULL, 13012972687708005422ULL},
|
|
{12896848725136832414ULL, 9881710852371170521ULL},
|
|
{17900663530283054991ULL, 9606960248070178723ULL},
|
|
{4513619521783122834ULL, 4823611535250518791ULL},
|
|
{15572858348470724038ULL, 4882998878774456634ULL},
|
|
{3464540909110937960ULL, 14591983318346304410ULL},
|
|
{2951301498066556278ULL, 3029976006973164807ULL},
|
|
{7848995488883197496ULL, 10621954303326018594ULL},
|
|
{5702723040652442467ULL, 11325339470689059424ULL},
|
|
{870698890980252409ULL, 8294946103885186165ULL},
|
|
{423348447487367835ULL, 4067674294039261619ULL},
|
|
{397951862030142664ULL, 17073640849499096681ULL},
|
|
{9374556141781683538ULL, 10333311062251856416ULL},
|
|
{1097707041202763764ULL, 2870200096551238743ULL},
|
|
{11493051326088411054ULL, 12348796263566330575ULL},
|
|
{15865059192259516415ULL, 4808544582161036476ULL},
|
|
{2717981543414886593ULL, 5944564527643476706ULL},
|
|
{887521262173735642ULL, 3558550013200985442ULL},
|
|
{9496424291456600748ULL, 9845949835154361896ULL},
|
|
{1589012859535948937ULL, 7402826160257180747ULL}
|
|
};
|
|
|
|
BOOST_AUTO_TEST_CASE(test_hash_output) {
|
|
auto assert_hashes_equal = [] (bytes_view data, std::array<uint64_t,2> lhs, std::array<uint64_t,2> rhs) {
|
|
if (lhs != rhs) {
|
|
BOOST_FAIL(format("Hashes differ for {} (got {{0x{:x}, 0x{:x}}} and {{0x{:x}, 0x{:x}}})", to_hex(data),
|
|
lhs[0], lhs[1], rhs[0], rhs[1]));
|
|
}
|
|
};
|
|
|
|
for (size_t i = 0; i < full_sequence.size(); ++i) {
|
|
auto prefix = bytes_view(full_sequence.begin(), i);
|
|
auto&& expected = prefix_hashes[i];
|
|
|
|
{
|
|
std::array<uint64_t, 2> dst;
|
|
utils::murmur_hash::hash3_x64_128(prefix, seed, dst);
|
|
assert_hashes_equal(prefix, dst, expected);
|
|
}
|
|
|
|
// Test the iterator version
|
|
{
|
|
std::array<uint64_t,2> dst;
|
|
utils::murmur_hash::hash3_x64_128(prefix.begin(), prefix.size(), seed, dst);
|
|
assert_hashes_equal(prefix, dst, expected);
|
|
}
|
|
}
|
|
}
|