45 lines
1.2 KiB
Markdown
45 lines
1.2 KiB
Markdown
# seed-random
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Generate random numbers with a seed, useful for reproducible tests
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[](http://travis-ci.org/ForbesLindesay/seed-random)
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[](https://gemnasium.com/ForbesLindesay/seed-random)
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[](http://badge.fury.io/js/seed-random)
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## Installation
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$ npm install seed-random
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## API
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```javascript
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var assert = require('assert');
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var seed = require('../');
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var trueRandomA = seed();
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var trueRandomB = seed();
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assert(trueRandomA() != trueRandomB());
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var fakeRandomA = seed('foo');
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var fakeRandomB = seed('foo');
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assert(fakeRandomA() == fakeRandomB());
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var fakeRandomC = seed('foo', {entropy: true});
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var fakeRandomD = seed('foo', {entropy: true});
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assert(fakeRandomC() != fakeRandomD());
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seed('foo', {global: true});//over-ride global Math.random
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var numA = Math.random();
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seed('foo', {global: true});
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var numB = Math.random();
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assert(numA == numB);//always true
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seed.resetGlobal();//reset to default Math.random
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```
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## License
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MIT
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