var assert = require('assert')
var crypto = require('crypto')
var bs58 = require('bs58')
var HDKey = require('../')

var fixtures = require('./fixtures/hdkey')

function encode(buf) {
  var hash = crypto.createHash('sha256').update(buf).digest()
  var chksum = crypto.createHash('sha256').update(hash).digest().slice(0,4)
  return bs58.encode(Buffer.concat([buf, chksum]))
}

describe('hdkey', function() {
  describe('+ fromMasterSeed', function() {
    var f = fixtures.valid.forEach(function(f) {
      it('should properly derive the chain path: ' + f.path, function() {
      
        var hdkey = HDKey.fromMasterSeed(new Buffer(f.seed, 'hex'))
        var childkey = hdkey.derive(f.path)

        assert.equal(encode(childkey.privateOld), f.private)
        assert.equal(encode(childkey.publicOld), f.public)
      })    
    }) 
  }) 
})