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- 'use strict';
- var test = require('tape');
- var crypto = require('../');
- var Buffer = require('safe-buffer').Buffer;
- test('get error message', function (t) {
- try {
- var b = crypto.randomFillSync(Buffer.alloc(10));
- t.ok(Buffer.isBuffer(b));
- t.end();
- } catch (err) {
- t.ok((/not supported/).test(err.message), '"not supported" is in error message');
- t.end();
- }
- });
- test('randomfill', function (t) {
- t.plan(5);
- t.equal(crypto.randomFillSync(Buffer.alloc(10)).length, 10);
- t.ok(Buffer.isBuffer(crypto.randomFillSync(Buffer.alloc(10))));
- crypto.randomFill(Buffer.alloc(10), function (ex, bytes) {
- t.error(ex);
- t.equal(bytes.length, 10);
- t.ok(Buffer.isBuffer(bytes));
- t.end();
- });
- });
- test('seems random', function (t) {
- var L = 1000;
- var buffer = crypto.randomFillSync(Buffer.alloc(L));
- var mean = Array.prototype.reduce.call(buffer, function (a, b) {
- return a + b;
- }, 0) / L;
-
-
-
-
-
-
- var expected = 256 / 2;
- var smean = Math.sqrt(mean);
-
- console.log(JSON.stringify([expected - smean, mean, expected + smean]));
- t.ok(mean < expected + smean);
- t.ok(mean > expected - smean);
- t.end();
- });
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