60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
#include "seeded_hash.h"
|
|
|
|
#include <unordered_map>
|
|
#include <string>
|
|
#include <iostream>
|
|
|
|
using std::cerr;
|
|
using std::endl;
|
|
using std::string;
|
|
using std::unordered_map;
|
|
using namespace cxxmph;
|
|
|
|
int main(int argc, char** argv) {
|
|
auto hasher = seeded_hash_function<Murmur3StringPiece>();
|
|
string key1("0");
|
|
string key2("1");
|
|
auto h1 = hasher.hash128(key1, 1);
|
|
auto h2 = hasher.hash128(key2, 1);
|
|
if (h1 == h2) {
|
|
fprintf(stderr, "unexpected murmur collision\n");
|
|
exit(-1);
|
|
}
|
|
|
|
unordered_map<uint64_t, int, Murmur3Fmix64bitsType> g;
|
|
for (int i = 0; i < 1000; ++i) g[i] = i;
|
|
for (int i = 0; i < 1000; ++i) if (g[i] != i) exit(-1);
|
|
|
|
auto inthasher = seeded_hash_function<std::hash<uint64_t>>();
|
|
unordered_map<h128, int, h128::hash32> g2;
|
|
for (uint64_t i = 0; i < 1000; ++i) {
|
|
auto h = inthasher.hash128(i, 0);
|
|
if (g2.find(h) != g2.end()) {
|
|
std::cerr << "Incorrectly found " << i << std::endl;
|
|
exit(-1);
|
|
}
|
|
if (h128::hash32()(h) != h[3]) {
|
|
cerr << "Buggy hash method." << endl;
|
|
exit(-1);
|
|
}
|
|
auto h2 = inthasher.hash128(i, 0);
|
|
if (!(h == h2)) {
|
|
cerr << "h 64(0) " << h.get64(0) << " h 64(1) " << h.get64(1) << endl;
|
|
cerr << " h2 64(0) " << h2.get64(0) << " h2 64(1) " << h2.get64(1) << endl;
|
|
cerr << "Broken equality for h128" << endl;
|
|
exit(-1);
|
|
}
|
|
if (h128::hash32()(h) != h128::hash32()(h2)) {
|
|
cerr << "Inconsistent hash method." << endl;
|
|
exit(-1);
|
|
}
|
|
g2[h] = i;
|
|
if (g2.find(h) == g2.end()) {
|
|
std::cerr << "Incorrectly missed " << i << std::endl;
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
for (uint64_t i = 0; i < 1000; ++i) if (g2[inthasher.hash128(i, 0)] != i) exit(-1);
|
|
}
|