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| Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-crypto-lazy-transform-writable.js |
'use strict';
const common = require('../common');
if (!common.hasCrypto)
common.skip('missing crypto');
const assert = require('assert');
const crypto = require('crypto');
const Stream = require('stream');
const hasher1 = crypto.createHash('sha256');
const hasher2 = crypto.createHash('sha256');
// Calculate the expected result.
hasher1.write(Buffer.from('hello world'));
hasher1.end();
const expected = hasher1.read().toString('hex');
class OldStream extends Stream {
constructor() {
super();
this.readable = true;
}
}
const stream = new OldStream();
stream.pipe(hasher2).on('finish', common.mustCall(function() {
const hash = hasher2.read().toString('hex');
assert.strictEqual(hash, expected);
}));
stream.emit('data', Buffer.from('hello'));
stream.emit('data', Buffer.from(' world'));
stream.emit('end');
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