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34 lines
819 B
34 lines
819 B
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const crypto = require('crypto');
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const Stream = require('stream');
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const util = require('util');
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const hasher1 = crypto.createHash('sha256');
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const hasher2 = crypto.createHash('sha256');
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// Calculate the expected result.
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hasher1.write(Buffer.from('hello world'));
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hasher1.end();
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const expected = hasher1.read().toString('hex');
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function OldStream() {
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Stream.call(this);
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this.readable = true;
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}
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util.inherits(OldStream, Stream);
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const stream = new OldStream();
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stream.pipe(hasher2).on('finish', common.mustCall(function() {
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const hash = hasher2.read().toString('hex');
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assert.strictEqual(expected, hash);
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}));
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stream.emit('data', Buffer.from('hello'));
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stream.emit('data', Buffer.from(' world'));
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stream.emit('end');
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