text: 'use strict';
  
  var chai = require('chai');
  var should = chai.should();
  var expect = chai.expect;
  
  var bitcore = require('..');
  var BN = bitcore.crypto.BN;
  var Point = bitcore.crypto.Point;
  var PrivateKey = bitcore.PrivateKey;
  var Networks = bitcore.Networks;
  var base58check = bitcore.encoding.Base58Check;
  
  var validbase58 = require('./data/bitcoind/base58_keys_valid.json');
  var invalidbase58 = require('./data/bitcoind/base58_keys_invalid.json');
  
  describe('PrivateKey', function() {
    var hex = '96c132224121b509b7d0a16245e957d9192609c5637c6228311287b1be21627a';
    var hex2 = '8080808080808080808080808080808080808080808080808080808080808080';
    var buf = new Buffer(hex, 'hex');
    var wifTestnet = 'cSdkPxkAjA4HDr5VHgsebAPDEh9Gyub4HK8UJr2DFGGqKKy4K5sG';
    var wifTestnetUncompressed = '92jJzK4tbURm1C7udQXxeCBvXHoHJstDXRxAMouPG1k1XUaXdsu';
    var wifLivenet = 'L2Gkw3kKJ6N24QcDuH4XDqt9cTqsKTVNDGz1CRZhk9cq4auDUbJy';
    var wifLivenetUncompressed = '5JxgQaFM1FMd38cd14e3mbdxsdSa9iM2BV6DHBYsvGzxkTNQ7Un';
  
    it('should create a new random private key', function() {
      var a = new PrivateKey();
      should.exist(a);
      should.exist(a.bn);
      var b = PrivateKey();
      should.exist(b);
      should.exist(b.bn);
    });
  
    it('should create a privatekey from hexa string', function() {
      var a = new PrivateKey(hex2);
      should.exist(a);
      should.exist(a.bn);
    });
  
    it('should create a new random testnet private key with only one argument', function() {
      var a = new PrivateKey(Networks.testnet);
      should.exist(a);
      should.exist(a.bn);
    });
  
    it('should create a new random testnet private key with empty data', function() {
      var a = new PrivateKey(null, Networks.testnet);
      should.exist(a);
      should.exist(a.bn);
    });
  
    it('should create a private key from WIF string', function() {
      var a = new PrivateKey('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
      should.exist(a);
      should.exist(a.bn);
    });
  
    it('should create a private key from WIF buffer', function() {
      var a = new PrivateKey(base58check.decode('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m'));
      should.exist(a);
      should.exist(a.bn);
    });
  
    describe('bitcoind compliance', function() {
      validbase58.map(function(d){
        if (d[2].isPrivkey) {
          it('should instantiate WIF private key ' + d[0] + ' with correct properties', function() {
            var network = Networks.livenet;
            if (d[2].isTestnet) {
              network = Networks.testnet;
            }
            var key = new PrivateKey(d[0]);
            key.compressed.should.equal(d[2].isCompressed);
            key.network.should.equal(network);
          });
        }
      });
      invalidbase58.map(function(d){
        it('should describe input ' + d[0].slice(0,10) + '... as invalid', function() {
          expect(function() {
            return new PrivateKey(d[0]);
          }).to.throw(Error);
        });
      });
    });
  
    describe('instantiation', function() {
      it('should not be able to instantiate private key greater than N', function() {
        expect(function() {
          return new PrivateKey(Point.getN());
        }).to.throw('Number must be less than N');
      });
  
      it('should not be able to instantiate private key because of network mismatch', function() {
        expect(function() {
          return new PrivateKey('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m', 'testnet');
        }).to.throw('Private key network mismatch');
      });
  
      it('should not be able to instantiate private key WIF is too long', function() {
        expect(function() {
          var buf = base58check.decode('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
          var buf2 = Buffer.concat([buf, new Buffer(0x01)]);
          return new PrivateKey(buf2);
        }).to.throw('Length of buffer must be 33 (uncompressed) or 34 (compressed');
      });
  
      it('should not be able to instantiate private key WIF because of unknown network byte', function() {
        expect(function() {
          var buf = base58check.decode('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
          var buf2 = Buffer.concat([new Buffer('ff', 'hex'), buf.slice(1, 33)]);
          return new PrivateKey(buf2);
        }).to.throw('Invalid network');
      });
  
      it('can be instantiated from a hex string', function() {
        var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
        var pubhex = '02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc';
        var privkey = new PrivateKey(privhex);
        privkey.publicKey.toString().should.equal(pubhex);
      });
  
      it('should not be able to instantiate because of unrecognized data', function() {
        expect(function() {
          return new PrivateKey(new Error());
        }).to.throw('First argument is an unrecognized data type.');
      });
  
      it('should not be able to instantiate with unknown network', function() {
        expect(function() {
          return new PrivateKey(BN(2), 'unknown');
        }).to.throw('Must specify the network ("livenet" or "testnet")');
      });
  
      it('should not create a zero private key', function() {
        expect(function() {
          var bn = BN(0);
          return new PrivateKey(bn);
         }).to.throw(TypeError);
      });
  
      it('should create a livenet private key', function() {
        var privkey = new PrivateKey(BN.fromBuffer(buf), 'livenet');
        privkey.toWIF().should.equal(wifLivenet);
      });
  
      it('should create a default network private key', function() {
        var a = new PrivateKey(BN.fromBuffer(buf));
        a.network.should.equal(Networks.livenet);
        // change the default
        Networks.defaultNetwork = Networks.testnet;
        var b = new PrivateKey(BN.fromBuffer(buf));
        b.network.should.equal(Networks.testnet);
        // restore the default
        Networks.defaultNetwork = Networks.livenet;
      });
  
      it('returns the same instance if a PrivateKey is provided (immutable)', function() {
        var privkey = new PrivateKey();
        new PrivateKey(privkey).should.equal(privkey);
      });
  
    });
  
    describe('#json', function() {
  
      it('should input/output json', function() {
        var json = JSON.stringify({
          bn: '96c132224121b509b7d0a16245e957d9192609c5637c6228311287b1be21627a',
          compressed: false,
          network: 'livenet'
        });
        PrivateKey.fromJSON(json).toJSON().should.deep.equal(json);
      });
  
      it('an object with private key info can be also used as argument for "fromJSON"', function() {
        expect(PrivateKey._isJSON({bn: true, network: true})).to.equal(true);
      });
  
      it('fails on invalid argument', function() {
        expect(function() {
          return PrivateKey.fromJSON('¹');
        }).to.throw();
      });
  
      it('also accepts an object as argument', function() {
        expect(function() {
          return PrivateKey.fromJSON(new PrivateKey().toObject());
        }).to.not.throw();
      });
    });
  
    it('coverage: public key cache', function() {
      expect(function() {
        var privateKey = new PrivateKey();
        /* jshint unused: false */
        var publicKey = privateKey.publicKey;
        return privateKey.publicKey;
      }).to.not.throw();
    });
  
    describe('#toString', function() {
  
      it('should output this address correctly', function() {
        var privkey = PrivateKey.fromWIF(wifLivenetUncompressed);
        privkey.toWIF().should.equal(wifLivenetUncompressed);
      });
  
    });
  
    describe('#toAddress', function() {
      it('should output this known livenet address correctly', function() {
        var privkey = PrivateKey.fromWIF('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
        var address = privkey.toAddress();
        address.toString().should.equal('1A6ut1tWnUq1SEQLMr4ttDh24wcbJ5o9TT');
      });
  
      it('should output this known testnet address correctly', function() {
        var privkey = PrivateKey.fromWIF('cR4qogdN9UxLZJXCNFNwDRRZNeLRWuds9TTSuLNweFVjiaE4gPaq');
        var address = privkey.toAddress();
        address.toString().should.equal('mtX8nPZZdJ8d3QNLRJ1oJTiEi26Sj6LQXS');
      });
  
    });
  
    describe('#inspect', function() {
      it('should output known livenet address for console', function() {
        var privkey = PrivateKey.fromWIF('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
        privkey.inspect().should.equal(
          '<PrivateKey: b9de6e778fe92aa7edb69395556f843f1dce0448350112e14906efc2a80fa61a, network: livenet>'
        );
      });
  
      it('should output known testnet address for console', function() {
        var privkey = PrivateKey.fromWIF('cR4qogdN9UxLZJXCNFNwDRRZNeLRWuds9TTSuLNweFVjiaE4gPaq');
        privkey.inspect().should.equal(
          '<PrivateKey: 67fd2209ce4a95f6f1d421ab3fbea47ada13df11b73b30c4d9a9f78cc80651ac, network: testnet>'
        );
      });
  
      it('outputs "uncompressed" for uncompressed imported WIFs', function() {
        var privkey = PrivateKey.fromWIF(wifLivenetUncompressed);
        privkey.inspect().should.equal('<PrivateKey: 96c132224121b509b7d0a16245e957d9192609c5637c6228311287b1be21627a, network: livenet, uncompressed>');
      });
    });
  
    describe('#getValidationError', function(){
      it('should get an error because private key greater than N', function() {
        var n = Point.getN();
        var a = PrivateKey.getValidationError(n);
        a.message.should.equal('Number must be less than N');
      });
  
      it('should validate as false because private key greater than N', function() {
        var n = Point.getN();
        var a = PrivateKey.isValid(n);
        a.should.equal(false);
      });
  
      it('should validate as true', function() {
        var a = PrivateKey.isValid('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m');
        a.should.equal(true);
      });
  
    });
  
    describe('#toBuffer', function() {
      it('should output known buffer', function() {
        var privkey = new PrivateKey(BN.fromBuffer(buf), 'livenet');
        privkey.toString().should.equal(buf.toString('hex'));
      });
    });
  
    describe('#toBigNumber', function() {
      it('should output known BN', function() {
        var a = BN.fromBuffer(buf);
        var privkey = new PrivateKey(a, 'livenet');
        var b = privkey.toBigNumber();
        b.toString('hex').should.equal(a.toString('hex'));
      });
    });
  
    describe('#fromRandom', function() {
  
      it('should set bn gt 0 and lt n, and should be compressed', function() {
        var privkey = PrivateKey.fromRandom();
        privkey.bn.gt(BN(0)).should.equal(true);
        privkey.bn.lt(Point.getN()).should.equal(true);
        privkey.compressed.should.equal(true);
      });
  
    });
  
    describe('#fromWIF', function() {
  
      it('should parse this compressed testnet address correctly', function() {
        var privkey = PrivateKey.fromWIF(wifLivenet);
        privkey.toWIF().should.equal(wifLivenet);
      });
  
    });
  
    describe('#toWIF', function() {
  
      it('should parse this compressed testnet address correctly', function() {
        var privkey = PrivateKey.fromWIF(wifTestnet);
        privkey.toWIF().should.equal(wifTestnet);
      });
  
    });
  
    describe('#fromString', function() {
  
      it('should parse this uncompressed testnet address correctly', function() {
        var privkey = PrivateKey.fromString(wifTestnetUncompressed);
        privkey.toWIF().should.equal(wifTestnetUncompressed);
      });
  
    });
  
    describe('#toString', function() {
  
      it('should parse this uncompressed livenet address correctly', function() {
        var privkey = PrivateKey.fromString(wifLivenetUncompressed);
        privkey.toString().should.equal("96c132224121b509b7d0a16245e957d9192609c5637c6228311287b1be21627a");
      });
  
    });
  
    describe('#toPublicKey', function() {
  
      it('should convert this known PrivateKey to known PublicKey', function() {
        var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
        var pubhex = '02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc';
        var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')));
        var pubkey = privkey.toPublicKey();
        pubkey.toString().should.equal(pubhex);
      });
  
      it('should have a "publicKey" property', function() {
        var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
        var pubhex = '02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc';
        var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')));
        privkey.publicKey.toString().should.equal(pubhex);
      });
  
      it('should convert this known PrivateKey to known PublicKey and preserve compressed=true', function() {
        var privwif = 'L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m';
        var privkey = new PrivateKey(privwif, 'livenet');
        var pubkey = privkey.toPublicKey();
        pubkey.compressed.should.equal(true);
      });
  
      it('should convert this known PrivateKey to known PublicKey and preserve compressed=false', function() {
        var privwif = '92jJzK4tbURm1C7udQXxeCBvXHoHJstDXRxAMouPG1k1XUaXdsu';
        var privkey = new PrivateKey(privwif, 'testnet');
        var pubkey = privkey.toPublicKey();
        pubkey.compressed.should.equal(false);
      });
  
    });
  
    it('creates an address as expected from WIF, livenet', function() {
      var privkey = new PrivateKey('5J2NYGstJg7aJQEqNwYp4enG5BSfFdKXVTtBLvHicnRGD5kjxi6');
      privkey.publicKey.toAddress().toString().should.equal('135bwugFCmhmNU3SeCsJeTqvo5ViymgwZ9');
    });
  
    it('creates an address as expected from WIF, testnet', function() {
      var privkey = new PrivateKey('92VYMmwFLXRwXn5688edGxYYgMFsc3fUXYhGp17WocQhU6zG1kd');
      privkey.publicKey.toAddress().toString().should.equal('moiAvLUw16qgrwhFGo1eDnXHC2wPMYiv7Y');
    });
  
  });
  