1 // test compressing and uncompressing a string with zlib
3 var common = require('../common');
4 var assert = require('assert');
5 var zlib = require('zlib');
7 var inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing el' +
8 'it. Morbi faucibus, purus at gravida dictum, libero arcu convallis la' +
9 'cus, in commodo libero metus eu nisi. Nullam commodo, neque nec porta' +
10 ' placerat, nisi est fermentum augue, vitae gravida tellus sapien sit ' +
11 'amet tellus. Aenean non diam orci. Proin quis elit turpis. Suspendiss' +
12 'e non diam ipsum. Suspendisse nec ullamcorper odio. Vestibulum arcu m' +
13 'i, sodales non suscipit id, ultrices ut massa. Sed ac sem sit amet ar' +
14 'cu malesuada fermentum. Nunc sed. ';
15 var expectedBase64Deflate = 'eJxdUUtOQzEMvMoc4OndgT0gJCT2buJWlpI4jePeqZfpm' +
16 'XAKLRKbLOzx/HK73q6vOrhCunlF1qIDJhNUeW5I2ozT5OkDlKWLJWkncJG5403HQXAkT3' +
17 'Jw29B9uIEmToMukglZ0vS6ociBh4JG8sV4oVLEUCitK2kxq1WzPnChHDzsaGKy491Lofo' +
18 'AbWh8do43oeuYhB5EPCjcLjzYJo48KrfQBvnJecNFJvHT1+RSQsGoC7dn2t/xjhduTA1N' +
19 'WyQIZR0pbHwMDatnD+crPqKSqGPHp1vnlsWM/07ubf7bheF7kqSj84Bm0R1fYTfaK8vqq' +
20 'qfKBtNMhe3OZh6N95CTvMX5HJJi4xOVzCgUOIMSLH7wmeOHaFE4RdpnGavKtrB5xzfO/Ll9';
21 var expectedBase64Gzip = 'H4sIAAAAAAAAA11RS05DMQy8yhzg6d2BPSAkJPZu4laWkjiN' +
22 '496pl+mZcAotEpss7PH8crverq86uEK6eUXWogMmE1R5bkjajNPk6QOUpYslaSdwkbnjT' +
23 'cdBcCRPcnDb0H24gSZOgy6SCVnS9LqhyIGHgkbyxXihUsRQKK0raTGrVbM+cKEcPOxoYr' +
24 'Lj3Uuh+gBtaHx2jjeh65iEHkQ8KNwuPNgmjjwqt9AG+cl5w0Um8dPX5FJCwagLt2fa3/G' +
25 'OF25MDU1bJAhlHSlsfAwNq2cP5ys+opKoY8enW+eWxYz/Tu5t/tuF4XuSpKPzgGbRHV9h' +
26 'N9ory+qqp8oG00yF7c5mHo33kJO8xfkckmLjE5XMKBQ4gxIsfvCZ44doUThF2mcZq8q2s' +
29 zlib.deflate(inputString, function(err, buffer) {
30 assert.equal(buffer.toString('base64'), expectedBase64Deflate,
31 'deflate encoded string should match');
34 zlib.gzip(inputString, function(err, buffer) {
35 // Can't actually guarantee that we'll get exactly the same
36 // deflated bytes when we compress a string, since the header
37 // depends on stuff other than the input string itself.
38 // However, decrypting it should definitely yield the same
39 // result that we're expecting, and this should match what we get
40 // from inflating the known valid deflate data.
41 zlib.gunzip(buffer, function(err, gunzipped) {
42 assert.equal(gunzipped.toString(), inputString,
43 'Should get original string after gzip/gunzip');
47 var buffer = new Buffer(expectedBase64Deflate, 'base64');
48 zlib.unzip(buffer, function(err, buffer) {
49 assert.equal(buffer.toString(), inputString,
50 'decoded inflated string should match');
53 buffer = new Buffer(expectedBase64Gzip, 'base64');
54 zlib.unzip(buffer, function(err, buffer) {
55 assert.equal(buffer.toString(), inputString,
56 'decoded gunzipped string should match');