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nodejs/test/parallel/test-crypto-hash-stream-pipe.js

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var common = require('../common');
var assert = require('assert');
var crypto = require('crypto');
var stream = require('stream')
var s = new stream.PassThrough();
var h = crypto.createHash('sha1');
var expect = '15987e60950cf22655b9323bc1e281f9c4aff47e';
var gotData = false;
process.on('exit', function() {
assert(gotData);
console.log('ok');
});
s.pipe(h).on('data', function(c) {
assert.equal(c, expect);
gotData = true;
}).setEncoding('hex');
s.end('aoeu');