reign/lib-legacy/hash-functions/buffer/test.js

A persistent, typed-objects implementation.

'use strict';

var _2 = require('./');

var _3 = _interopRequireDefault(_2);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

describe('Buffer Hashes', function () {

  var bufs = Array.from({ length: 10 }, function (_, index) {
    return new Buffer('foo bar ' + index);
  });

  it('should hash a buffer value using the default hash function', function () {
    var input = new Buffer("hello world");
    (0, _3.default)(input).should.eql(1794106052);
  });

  it('should hash a buffer value using the fnv hash function', function () {
    var input = new Buffer("hello world");
    (0, _2.fnv)(input).should.eql(3582672807);
  });

  it('should hash a buffer value using the djb hash function', function () {
    var input = new Buffer("hello world");
    (0, _2.djb)(input).should.eql(894552257);
  });

  it('should hash a buffer value using the murmur3 hash function', function () {
    var input = new Buffer("hello world");
    (0, _2.murmur3)(input).should.eql(1586663183);
  });

  benchmark("Default vs DJB", 10000, {
    default: function _default() {
      return (0, _3.default)(bufs[4]);
    },
    djb: function djb() {
      return (0, _2.djb)(bufs[4]);
    }
  });

  benchmark("Default vs Murmur3", 10000, {
    default: function _default() {
      return (0, _3.default)(bufs[4]);
    },
    murmur3: function murmur3() {
      return (0, _2.murmur3)(bufs[4]);
    }
  });

  benchmark("Default buffer hash vs FNV vs DJB", 10000, {
    default: function _default() {
      return (0, _3.default)(bufs[0]) + (0, _3.default)(bufs[1]) + (0, _3.default)(bufs[2]) + (0, _3.default)(bufs[3]) + (0, _3.default)(bufs[4]) + (0, _3.default)(bufs[5]) + (0, _3.default)(bufs[6]) + (0, _3.default)(bufs[7]) + (0, _3.default)(bufs[8]) + (0, _3.default)(bufs[9]);
    },
    fnv: function fnv() {
      return (0, _2.fnv)(bufs[0]) + (0, _2.fnv)(bufs[1]) + (0, _2.fnv)(bufs[2]) + (0, _2.fnv)(bufs[3]) + (0, _2.fnv)(bufs[4]) + (0, _2.fnv)(bufs[5]) + (0, _2.fnv)(bufs[6]) + (0, _2.fnv)(bufs[7]) + (0, _2.fnv)(bufs[8]) + (0, _2.fnv)(bufs[9]);
    },
    djb: function djb() {
      return (0, _2.djb)(bufs[0]) + (0, _2.djb)(bufs[1]) + (0, _2.djb)(bufs[2]) + (0, _2.djb)(bufs[3]) + (0, _2.djb)(bufs[4]) + (0, _2.djb)(bufs[5]) + (0, _2.djb)(bufs[6]) + (0, _2.djb)(bufs[7]) + (0, _2.djb)(bufs[8]) + (0, _2.djb)(bufs[9]);
    }
  });
});