https://github.com/ForbesLindesay/seed-random

Generate random numbers with a seed, useful for reproducible tests
https://github.com/ForbesLindesay/seed-random

Last synced: 3 months ago
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Generate random numbers with a seed, useful for reproducible tests

• Host: GitHub
• URL: https://github.com/ForbesLindesay/seed-random
• Owner: ForbesLindesay
• License: other
• Created: 2012-11-23T20:02:36.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2018-05-14T12:19:38.000Z (over 6 years ago)
• Last Synced: 2024-07-10T21:19:53.119Z (4 months ago)
• Language: JavaScript
• Homepage: http://davidbau.com/archives/2010/01/30/random_seeds_coded_hints_and_quintillions.html
• Size: 9.77 KB
• Stars: 39
• Watchers: 5
• Forks: 8
• Open Issues: 5
• Metadata Files:
  • Readme: Readme.md
  • Changelog: History.md
  • License: LICENSE

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# seed-random

Generate random numbers with a seed, useful for reproducible tests

[![build status](https://secure.travis-ci.org/ForbesLindesay/seed-random.png?branch=master)](http://travis-ci.org/ForbesLindesay/seed-random)

[![Dependency Status](https://img.shields.io/david/ForbesLindesay/seed-random.svg)](https://david-dm.org/ForbesLindesay/seed-random)

[![NPM version](https://img.shields.io/npm/v/seed-random.svg)](https://www.npmjs.com/package/seed-random)

## Installation

    $ npm install seed-random

## API

```javascript

var assert = require('assert');

var seed = require('../');

var trueRandomA = seed();

var trueRandomB = seed();

assert(trueRandomA() != trueRandomB());

var fakeRandomA = seed('foo');

var fakeRandomB = seed('foo');

assert(fakeRandomA() == fakeRandomB());

var fakeRandomC = seed('foo', {entropy: true});

var fakeRandomD = seed('foo', {entropy: true});

assert(fakeRandomC() != fakeRandomD());

seed('foo', {global: true});//over-ride global Math.random

var numA = Math.random();

seed('foo', {global: true});

var numB = Math.random();

assert(numA == numB);//always true

seed.resetGlobal();//reset to default Math.random

```

## License

MIT