1  var inflate = require('../');
 2  var zlib = require('zlib');
 3  var fs = require('fs');
 4  var assert = require('assert');
 5  var uncompressed = fs.readFileSync(__dirname + '/lorem.txt');
 6  
 7  describe('tiny-inflate', function() {
 8    var compressed, noCompression, fixed;
 9    
10    function deflate(buf, options, fn) {    
11      var chunks = [];
12      zlib.createDeflateRaw(options)
13        .on('data', function(chunk) {
14          chunks.push(chunk);
15        })
16        .on('error', fn)
17        .on('end', function() {
18          fn(null, Buffer.concat(chunks));
19        })
20        .end(buf);
21    }
22    
23    before(function(done) {
24      zlib.deflateRaw(uncompressed, function(err, data) {
25        compressed = data;
26        done();
27      });
28    });
29    
30    before(function(done) {
31      deflate(uncompressed, { level: zlib.Z_NO_COMPRESSION }, function(err, data) {
32        noCompression = data;
33        done();
34      });
35    });
36    
37    before(function(done) {
38      deflate(uncompressed, { strategy: zlib.Z_FIXED }, function(err, data) {
39        fixed = data;
40        done();
41      });
42    });
43    
44    it('should inflate some data', function() {
45      var out = Buffer.alloc(uncompressed.length);
46      inflate(compressed, out);
47      assert.deepEqual(out, uncompressed);
48    });
49    
50    it('should slice output buffer', function() {
51      var out = Buffer.alloc(uncompressed.length + 1024);
52      var res = inflate(compressed, out);
53      assert.deepEqual(res, uncompressed);
54      assert.equal(res.length, uncompressed.length);
55    });
56    
57    it('should handle uncompressed blocks', function() {
58      var out = Buffer.alloc(uncompressed.length);
59      inflate(noCompression, out);
60      assert.deepEqual(out, uncompressed);
61    });
62    
63    it('should handle fixed huffman blocks', function() {
64      var out = Buffer.alloc(uncompressed.length);
65      inflate(fixed, out);
66      assert.deepEqual(out, uncompressed);
67    });
68    
69    it('should handle typed arrays', function() {
70      var input = new Uint8Array(compressed);
71      var out = new Uint8Array(uncompressed.length);
72      inflate(input, out);
73      assert.deepEqual(out, new Uint8Array(uncompressed));
74    });
75  });