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34 lines
983 B
34 lines
983 B
'use strict';
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var common = require('../common');
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var assert = require('assert');
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var zlib = require('zlib');
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var path = require('path');
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var fs = require('fs');
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const file = fs.readFileSync(path.resolve(common.fixturesDir, 'person.jpg'));
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const chunkSize = 12 * 1024;
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const opts = { level: 9, strategy: zlib.Z_DEFAULT_STRATEGY };
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const deflater = zlib.createDeflate(opts);
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const chunk1 = file.slice(0, chunkSize);
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const chunk2 = file.slice(chunkSize);
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const blkhdr = Buffer.from([0x00, 0x5a, 0x82, 0xa5, 0x7d]);
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const expected = Buffer.concat([blkhdr, chunk2]);
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let actual;
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deflater.write(chunk1, function() {
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deflater.params(0, zlib.Z_DEFAULT_STRATEGY, function() {
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while (deflater.read());
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deflater.end(chunk2, function() {
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var bufs = [], buf;
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while (buf = deflater.read())
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bufs.push(buf);
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actual = Buffer.concat(bufs);
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});
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});
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while (deflater.read());
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});
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process.once('exit', function() {
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assert.deepEqual(actual, expected);
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});
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