var ebml = require('../lib/ebml/index.js'),
    assert = require('assert');

describe('embl', function() {
    describe('Encoder', function() {
        function createEncoder(expected, done) {
            var encoder = new ebml.Encoder();
            encoder.on('data', function(chunk) {
                assert.equal(chunk.toString('hex'), new Buffer(expected).toString('hex'));
                done();
            });
            return encoder;
        }
        it('should write a single tag', function(done) {
            var encoder = createEncoder([0x42, 0x86, 0x81, 0x01], done);
            encoder.write(['tag', {
                name: 'EBMLVersion',
                data: new Buffer([0x01])
            }]);
        });
        it('should write a tag with a single child', function(done) {
            var encoder = createEncoder([0x1a, 0x45, 0xdf, 0xa3, 0x84, 0x42, 0x86, 0x81, 0x00], done);
            encoder.write(['start', {
                name: 'EBML',
            }]);
            encoder.write(['tag', {
                name: 'EBMLVersion',
                data: new Buffer([0x00])
            }]);
            encoder.write(['end', {
                name: 'EBML',
            }]);
        });
    });
});