libcruft-util/test/hash/fasthash.cpp

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#include "hash/fasthash.hpp"
#include "tap.hpp"
#include <cstring>
#include <inttypes.h>
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///////////////////////////////////////////////////////////////////////////////
std::vector<uint8_t>
operator"" _u8s (const char *str, size_t len)
{
std::vector<uint8_t> res;
res.resize (len);
std::copy_n (str, len, std::begin (res));
return res;
}
///////////////////////////////////////////////////////////////////////////////
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int
main (void)
{
util::TAP::logger tap;
static const struct {
uint32_t seed32;
uint32_t hash32;
uint64_t seed64;
uint64_t hash64;
const char *data;
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} TESTS[] = {
{ 0x00000000, 0x00000000, 0x0000000000000000, 0x0000000000000000, "" },
{ 0x00000001, 0xd30ac4de, 0x0000000000000001, 0x2127599bf4321e79, "" },
{ 0xffffffff, 0xf5c7b4b0, 0xffffffffffffffff, 0x9b4792000001368f, "" },
{ 0xf5c7b4b0, 0x228128b7, 0x9b4792000001368f, 0x67a642098cc81da6, "a" },
{ 0x228128b7, 0x8400568d, 0x67a642098cc81da6, 0xc906440e03ce99a8, "abc" },
{ 0x8400568d, 0x12b4858b, 0x67a642098cc81da6, 0x1a36fbf3d71b0737, "message digest" },
{ 0x12b4858b, 0x730b822e, 0x1a36fbf3d71b0737, 0x7b48e31e3ac40a0f, "abcdefghijklmnopqrstuvwxyz" },
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};
bool success32 = true;
bool success64 = true;
util::hash::fasthash<uint32_t> h32{};
util::hash::fasthash<uint64_t> h64{};
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for (const auto &t: TESTS) {
util::view data { t.data };
tap.expect_eq (t.hash32, h32 (t.seed32, data.cast<uint8_t const*> ()), "h32(%0" PRIx32 ")", t.seed32);
tap.expect_eq (t.hash64, h64 (t.seed64, data.cast<uint8_t const*> ()), "h64(%0" PRIx64 ")", t.seed64);
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}
tap.expect (success32, "fasthash32");
tap.expect (success64, "fasthash64");
return tap.status ();
}