it('should just return the same data if the codec is null', function(done){
var reader = DataFile.Reader();
reader.decompressData(new Buffer([0x13, 0x55, 0x35, 0x75, 0x0d, 0x4d, 0x05, 0x00]), "null", function(err, data) {
data.equals(new Buffer([0x13, 0x55, 0x35, 0x75, 0x0d, 0x4d, 0x05, 0x00])).should.be.true;
done();
});
});
it('should compress a given buffer with deflate and return the compressed buffer', function(done){
var reader = DataFile.Reader();
reader.decompressData(new Buffer([0x13, 0x55, 0x35, 0x75, 0x0d, 0x4d, 0x05, 0x00]), "deflate", function(err, data) {
data.equals(new Buffer([0x15, 0x25, 0x35, 0x45, 0x55, 0x65])).should.be.true;
done();
});
});
it('should return an error if an unsupported codec is passed as a parameter', function(done) {
var reader = DataFile.Reader();
reader.decompressData(new Buffer([0x13, 0x55, 0x35, 0x75]), "unsupported", function(err, data) {
should.exist(err);
err.should.be.an.instanceof(Error);
done();
});
})
it('should compress a given buffer with snappy and return the compressed buffer', function(done){
var reader = DataFile.Reader();
reader.decompressData(new Buffer([0x12, 0x44, 0x63, 0x6f, 0x6d, 0x70, 0x72, 0x65, 0x73,
0x73, 0x20, 0x74, 0x68, 0x69, 0x73, 0x20, 0x74, 0x65,
0x78, 0x74, 0x6c, 0x25, 0xd9, 0x04]), "snappy", function(err, data) {
if (err) done(err);
data.toString().should.equal("compress this text");
done();
});
});
it('should compress a given buffer with snappy and return the compressed buffer', function(done){
var reader = DataFile.Reader();
var writer = DataFile.Writer();
writer.compressData(new Buffer("compress this text"), "snappy", function(err, data) {
reader.decompressData(data, "snappy", function(err, data) {
if (err) done(err);
data.toString().should.equal("compress this text");
done();
});
});
});
it('should read data from a file stream pipe', function(done){
var reader = DataFile.Reader();
var fileStream = fs.createReadStream(dataFile);
fileStream.pipe(reader);
reader
.on('data', function(data) {
data.should.equal("hello world");
})
.on('error', function(err) {
done(err);
})
.on('close', function() {
done();
});
});