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36 lines
1.0 KiB
36 lines
1.0 KiB
'use strict';
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require('../common');
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const assert = require('assert');
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const zlib = require('zlib');
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const fixtures = require('../common/fixtures');
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const file = fixtures.readSync('person.jpg');
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const chunkSize = 16;
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const opts = { level: 0 };
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const deflater = zlib.createDeflate(opts);
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const chunk = file.slice(0, chunkSize);
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const expectedNone = Buffer.from([0x78, 0x01]);
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const blkhdr = Buffer.from([0x00, 0x10, 0x00, 0xef, 0xff]);
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const adler32 = Buffer.from([0x00, 0x00, 0x00, 0xff, 0xff]);
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const expectedFull = Buffer.concat([blkhdr, chunk, adler32]);
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let actualNone;
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let actualFull;
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deflater.write(chunk, function() {
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deflater.flush(zlib.constants.Z_NO_FLUSH, function() {
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actualNone = deflater.read();
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deflater.flush(function() {
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const bufs = [];
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let buf;
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while (buf = deflater.read())
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bufs.push(buf);
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actualFull = Buffer.concat(bufs);
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});
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});
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});
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process.once('exit', function() {
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assert.deepStrictEqual(actualNone, expectedNone);
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assert.deepStrictEqual(actualFull, expectedFull);
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});
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