mirror of
https://github.com/arvidn/libtorrent.git
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arvidn
125 lines
4.0 KiB
C++
125 lines
4.0 KiB
C++
/*
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Copyright (c) 2015-2017, 2019-2021, Arvid Norberg
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Copyright (c) 2016, Alden Torres
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All rights reserved.
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You may use, distribute and modify this code under the terms of the BSD license,
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see LICENSE file.
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*/
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#include "test.hpp"
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#include "libtorrent/sha1_hash.hpp"
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#include "libtorrent/hex.hpp" // from_hex
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using namespace lt;
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static sha1_hash to_hash(char const* s)
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{
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sha1_hash ret;
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aux::from_hex({s, 40}, ret.data());
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return ret;
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}
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TORRENT_TEST(sha1_hash)
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{
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sha1_hash h1(nullptr);
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sha1_hash h2(nullptr);
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TEST_CHECK(h1 == h2);
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TEST_CHECK(!(h1 != h2));
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TEST_CHECK(!(h1 < h2));
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TEST_CHECK(!(h1 < h2));
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TEST_CHECK(h1.is_all_zeros());
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h1 = to_hash("0123456789012345678901234567890123456789");
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h2 = to_hash("0113456789012345678901234567890123456789");
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TEST_CHECK(h2 < h1);
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TEST_CHECK(h2 == h2);
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TEST_CHECK(h1 == h1);
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h2.clear();
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TEST_CHECK(h2.is_all_zeros());
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h2 = to_hash("ffffffffff0000000000ffffffffff0000000000");
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h1 = to_hash("fffff00000fffff00000fffff00000fffff00000");
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h1 &= h2;
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TEST_CHECK(h1 == to_hash("fffff000000000000000fffff000000000000000"));
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h2 = to_hash("ffffffffff0000000000ffffffffff0000000000");
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h1 = to_hash("fffff00000fffff00000fffff00000fffff00000");
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h1 |= h2;
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TEST_CHECK(h1 == to_hash("fffffffffffffff00000fffffffffffffff00000"));
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h2 = to_hash("0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f");
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h1 ^= h2;
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TEST_CHECK(h1 == to_hash("f0f0f0f0f0f0f0ff0f0ff0f0f0f0f0f0f0ff0f0f"));
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TEST_CHECK(h1 != h2);
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h2 = sha1_hash(" ");
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TEST_CHECK(h2 == to_hash("2020202020202020202020202020202020202020"));
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h1 = to_hash("ffffffffff0000000000ffffffffff0000000000");
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h1 <<= 12;
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TEST_CHECK(h1 == to_hash("fffffff0000000000ffffffffff0000000000000"));
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h1 >>= 12;
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TEST_CHECK(h1 == to_hash("000fffffff0000000000ffffffffff0000000000"));
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h1 = to_hash("7000000000000000000000000000000000000000");
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h1 <<= 1;
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TEST_CHECK(h1 == to_hash("e000000000000000000000000000000000000000"));
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h1 = to_hash("0000000000000000000000000000000000000007");
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h1 <<= 1;
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TEST_CHECK(h1 == to_hash("000000000000000000000000000000000000000e"));
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h1 = to_hash("0000000000000000000000000000000000000007");
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h1 >>= 1;
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TEST_CHECK(h1 == to_hash("0000000000000000000000000000000000000003"));
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h1 = to_hash("7000000000000000000000000000000000000000");
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h1 >>= 1;
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TEST_CHECK(h1 == to_hash("3800000000000000000000000000000000000000"));
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h1 = to_hash("7000000000000000000000000000000000000000");
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h1 >>= 32;
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TEST_CHECK(h1 == to_hash("0000000070000000000000000000000000000000"));
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h1 >>= 33;
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TEST_CHECK(h1 == to_hash("0000000000000000380000000000000000000000"));
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h1 <<= 33;
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TEST_CHECK(h1 == to_hash("0000000070000000000000000000000000000000"));
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}
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TORRENT_TEST(count_leading_zeroes)
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{
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std::vector<std::pair<char const*, int>> const tests = {
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{ "ffffffffffffffffffffffffffffffffffffffff", 0 },
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{ "0000000000000000000000000000000000000000", 160 },
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{ "fff0000000000000000000000000000000000000", 0 },
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{ "7ff0000000000000000000000000000000000000", 1 },
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{ "3ff0000000000000000000000000000000000000", 2 },
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{ "1ff0000000000000000000000000000000000000", 3 },
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{ "0ff0000000000000000000000000000000000000", 4 },
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{ "07f0000000000000000000000000000000000000", 5 },
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{ "03f0000000000000000000000000000000000000", 6 },
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{ "01f0000000000000000000000000000000000000", 7 },
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{ "00f0000000000000000000000000000000000000", 8 },
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{ "0070000000000000000000000000000000000000", 9 },
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{ "0030000000000000000000000000000000000000", 10 },
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{ "0010000000000000000000000000000000000000", 11 },
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{ "0000000ffff00000000000000000000000000000", 28 },
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{ "00000007fff00000000000000000000000000000", 29 },
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{ "00000003fff00000000000000000000000000000", 30 },
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{ "00000001fff00000000000000000000000000000", 31 },
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{ "00000000fff00000000000000000000000000000", 32 },
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{ "000000007ff00000000000000000000000000000", 33 },
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{ "000000003ff00000000000000000000000000000", 34 },
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{ "000000001ff00000000000000000000000000000", 35 },
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};
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for (auto const& t : tests)
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{
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std::printf("%s\n", t.first);
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TEST_EQUAL(to_hash(t.first).count_leading_zeroes(), t.second);
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}
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}
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