text: // Copyright (c) 2013-2015 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 "hash.h"
  #include "utilstrencodings.h"
  #include "test/test_bullet.h"
  
  #include <vector>
  
  #include <boost/test/unit_test.hpp>
  
  using namespace std;
  
  BOOST_FIXTURE_TEST_SUITE(hash_tests, BasicTestingSetup)
  
  BOOST_AUTO_TEST_CASE(murmurhash3)
  {
  
  #define T(expected, seed, data) BOOST_CHECK_EQUAL(MurmurHash3(seed, ParseHex(data)), expected)
  
      // Test MurmurHash3 with various inputs. Of course this is retested in the
      // bloom filter tests - they would fail if MurmurHash3() had any problems -
      // but is useful for those trying to implement Bitcoin libraries as a
      // source of test data for their MurmurHash3() primitive during
      // development.
      //
      // The magic number 0xFBA4C795 comes from CBloomFilter::Hash()
  
      T(0x00000000, 0x00000000, "");
      T(0x6a396f08, 0xFBA4C795, "");
      T(0x81f16f39, 0xffffffff, "");
  
      T(0x514e28b7, 0x00000000, "00");
      T(0xea3f0b17, 0xFBA4C795, "00");
      T(0xfd6cf10d, 0x00000000, "ff");
  
      T(0x16c6b7ab, 0x00000000, "0011");
      T(0x8eb51c3d, 0x00000000, "001122");
      T(0xb4471bf8, 0x00000000, "00112233");
      T(0xe2301fa8, 0x00000000, "0011223344");
      T(0xfc2e4a15, 0x00000000, "001122334455");
      T(0xb074502c, 0x00000000, "00112233445566");
      T(0x8034d2a0, 0x00000000, "0011223344556677");
      T(0xb4698def, 0x00000000, "001122334455667788");
  
  #undef T
  }
  
  BOOST_AUTO_TEST_CASE(siphash)
  {
      CSipHasher hasher(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0x726fdb47dd0e0e31ull);
      hasher.Write(0x0706050403020100ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0x93f5f5799a932462ull);
      hasher.Write(0x0F0E0D0C0B0A0908ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0x3f2acc7f57c29bdbull);
      hasher.Write(0x1716151413121110ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0xb8ad50c6f649af94ull);
      hasher.Write(0x1F1E1D1C1B1A1918ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0x7127512f72f27cceull);
      hasher.Write(0x2726252423222120ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0x0e3ea96b5304a7d0ull);
      hasher.Write(0x2F2E2D2C2B2A2928ULL);
      BOOST_CHECK_EQUAL(hasher.Finalize(),  0xe612a3cb9ecba951ull);
  
      BOOST_CHECK_EQUAL(SipHashUint256(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL, uint256S("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100")), 0x7127512f72f27cceull);
  
      // Check consistency between CSipHasher and SipHashUint256[Extra].
      // TODO reenable when backporting Bitcoin #10321
      /*FastRandomContext ctx;
      for (int i = 0; i < 16; ++i) {
          uint64_t k1 = ctx.rand64();
          uint64_t k2 = ctx.rand64();
          uint256 x = GetRandHash();
          uint32_t n = ctx.rand32();
          uint8_t nb[4];
          WriteLE32(nb, n);
          CSipHasher sip256(k1, k2);
          sip256.Write(x.begin(), 32);
          CSipHasher sip288 = sip256;
          sip288.Write(nb, 4);
          BOOST_CHECK_EQUAL(SipHashUint256(k1, k2, x), sip256.Finalize());
          BOOST_CHECK_EQUAL(SipHashUint256Extra(k1, k2, x, n), sip288.Finalize());
      }*/
  }
  
  BOOST_AUTO_TEST_SUITE_END()
  