text: 'use strict';
  
  var should = require('chai').should();
  var expect = require('chai').expect;
  
  var bitcore = require('..');
  var Point = bitcore.crypto.Point;
  var BN = bitcore.crypto.BN;
  var PublicKey = bitcore.PublicKey;
  var PrivateKey = bitcore.PrivateKey;
  var Address = bitcore.Address;
  var Networks = bitcore.Networks;
  var AddrUtils = bitcore.util.AddrUtils;
  
  /* jshint maxlen: 200 */
  
  describe('PublicKey', function() {
    /* jshint maxstatements: 30 */
  
    var invalidPoint = '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000';
  
    describe('validating errors on creation', function() {
      it('errors if data is missing', function() {
        (function() {
          return new PublicKey();
        }).should.throw('First argument is required, please include public key data.');
      });
  
      it('errors if an invalid point is provided', function() {
        (function() {
          return new PublicKey(invalidPoint);
        }).should.throw('Point does not lie on the curve');
      });
  
      it('errors if a point not on the secp256k1 curve is provided', function() {
        (function() {
          return new PublicKey(new Point(1000, 1000));
        }).should.throw('Point does not lie on the curve');
      });
  
      it('errors if the argument is of an unrecognized type', function() {
        (function() {
          return new PublicKey(new Error());
        }).should.throw('First argument is an unrecognized data format.');
      });
    });
  
    describe('instantiation', function() {
  
      it('from a private key', function() {
        var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
        var pubhex = '02a1633cafcc01ebfb6d78e39f687a1f0995c62fc95f51ead10a02ee0be551b5dc';
        var privkey = new PrivateKey(new BN(new Buffer(privhex, 'hex')));
        var pk = new PublicKey(privkey);
        pk.toString().should.equal(pubhex);
      });
  
      it('problematic secp256k1 public keys', function() {
  
        var knownKeys = [
          {
            wif: AddrUtils.bitcoin_address_to_vcoin('KzsjKq2FVqVuQv2ueHVFuB65A9uEZ6S1L6F8NuokCrE3V3kE3Ack'),
            priv: '6d1229a6b24c2e775c062870ad26bc261051e0198c67203167273c7c62538846',
            pub: '03d6106302d2698d6a41e9c9a114269e7be7c6a0081317de444bb2980bf9265a01',
            pubx: 'd6106302d2698d6a41e9c9a114269e7be7c6a0081317de444bb2980bf9265a01',
            puby: 'e05fb262e64b108991a29979809fcef9d3e70cafceb3248c922c17d83d66bc9d'
          },
          {
            wif: AddrUtils.bitcoin_address_to_vcoin('L5MgSwNB2R76xBGorofRSTuQFd1bm3hQMFVf3u2CneFom8u1Yt7G'),
            priv: 'f2cc9d2b008927db94b89e04e2f6e70c180e547b3e5e564b06b8215d1c264b53',
            pub: '03e275faa35bd1e88f5df6e8f9f6edb93bdf1d65f4915efc79fd7a726ec0c21700',
            pubx: 'e275faa35bd1e88f5df6e8f9f6edb93bdf1d65f4915efc79fd7a726ec0c21700',
            puby: '367216cb35b086e6686d69dddd822a8f4d52eb82ac5d9de18fdcd9bf44fa7df7'
          }
        ];
  
        for(var i = 0; i < knownKeys.length; i++) {
          var privkey = new PrivateKey(knownKeys[i].wif);
          var pubkey = privkey.toPublicKey();
          pubkey.toString().should.equal(knownKeys[i].pub);
          pubkey.point.x.toString('hex').should.equal(knownKeys[i].pubx);
          pubkey.point.y.toString('hex').should.equal(knownKeys[i].puby);
        }
  
      });
  
      it('from a compressed public key', function() {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a';
        var publicKey = new PublicKey(publicKeyHex);
        publicKey.toString().should.equal(publicKeyHex);
      });
  
      it('from another publicKey', function() {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a';
        var publicKey = new PublicKey(publicKeyHex);
        var publicKey2 = new PublicKey(publicKey);
        publicKey.should.equal(publicKey2);
      });
  
      it('sets the network to defaultNetwork if none provided', function() {
        var publicKeyHex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a';
        var publicKey = new PublicKey(publicKeyHex);
        publicKey.network.should.equal(Networks.defaultNetwork);
      });
  
      it('from a hex encoded DER string', function() {
        var pk = new PublicKey('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
        should.exist(pk.point);
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
      });
  
      it('from a hex encoded DER buffer', function() {
        var pk = new PublicKey(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
        should.exist(pk.point);
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
      });
  
      it('from a point', function() {
        var p = new Point('86a80a5a2bfc48dddde2b0bd88bd56b0b6ddc4e6811445b175b90268924d7d48',
                          '3b402dfc89712cfe50963e670a0598e6b152b3cd94735001cdac6794975d3afd');
        var a = new PublicKey(p);
        should.exist(a.point);
        a.point.toString().should.equal(p.toString());
        var c = new PublicKey(p);
        should.exist(c.point);
        c.point.toString().should.equal(p.toString());
      });
    });
  
  
    describe('#getValidationError', function(){
  
      it('should recieve an invalid point error', function() {
        var error = PublicKey.getValidationError(invalidPoint);
        should.exist(error);
        error.message.should.equal('Point does not lie on the curve');
      });
  
      it('should recieve a boolean as false', function() {
        var valid = PublicKey.isValid(invalidPoint);
        valid.should.equal(false);
      });
  
      it('should recieve a boolean as true for uncompressed', function() {
        var valid = PublicKey.isValid('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
        valid.should.equal(true);
      });
  
      it('should recieve a boolean as true for compressed', function() {
        var valid = PublicKey.isValid('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        valid.should.equal(true);
      });
  
    });
  
    describe('#fromPoint', function() {
  
      it('should instantiate from a point', function() {
        var p = new Point('86a80a5a2bfc48dddde2b0bd88bd56b0b6ddc4e6811445b175b90268924d7d48',
                          '3b402dfc89712cfe50963e670a0598e6b152b3cd94735001cdac6794975d3afd');
        var b = PublicKey.fromPoint(p);
        should.exist(b.point);
        b.point.toString().should.equal(p.toString());
      });
  
      it('should error because paramater is not a point', function() {
        (function() {
          PublicKey.fromPoint(new Error());
        }).should.throw('First argument must be an instance of Point.');
      });
    });
  
    describe('#json/object', function() {
  
      it('should input/ouput json', function() {
        var json = JSON.stringify({
          x: '1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a',
          y: '7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341',
          compressed: false
        });
        var pubkey = new PublicKey(JSON.parse(json));
        JSON.stringify(pubkey).should.deep.equal(json);
      });
  
      it('fails if "y" is not provided', function() {
        expect(function() {
          return new PublicKey({
            x: '1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a'
          });
        }).to.throw();
      });
  
      it('fails if invalid JSON is provided', function() {
        expect(function() {
          return PublicKey._transformJSON('¹');
        }).to.throw();
      });
  
      it('works for X starting with 0x00', function() {
        var a = new PublicKey('030589ee559348bd6a7325994f9c8eff12bd5d73cc683142bd0dd1a17abc99b0dc');
        var b = new PublicKey('03'+a.toObject().x);
        b.toString().should.equal(a.toString());
      });
  
    });
  
    describe('#fromPrivateKey', function() {
  
      it('should make a public key from a privkey', function() {
        should.exist(PublicKey.fromPrivateKey(PrivateKey.fromRandom()));
      });
  
      it('should error because not an instance of privkey', function() {
        (function() {
          PublicKey.fromPrivateKey(new Error());
        }).should.throw('Must be an instance of PrivateKey');
      });
  
    });
  
    describe('#fromBuffer', function() {
  
      it('should parse this uncompressed public key', function() {
        var pk = PublicKey.fromBuffer(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
      it('should parse this compressed public key', function() {
        var pk = PublicKey.fromBuffer(new Buffer('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
      it('should throw an error on this invalid public key', function() {
        (function() {
          PublicKey.fromBuffer(new Buffer('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        }).should.throw();
      });
  
      it('should throw error because not a buffer', function() {
        (function() {
          PublicKey.fromBuffer('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        }).should.throw('Must be a hex buffer of DER encoded public key');
      });
  
      it('should throw error because buffer is the incorrect length', function() {
        (function() {
          PublicKey.fromBuffer(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a34112', 'hex'));
        }).should.throw('Length of x and y must be 32 bytes');
      });
  
    });
  
    describe('#fromDER', function() {
  
      it('should parse this uncompressed public key', function() {
        var pk = PublicKey.fromDER(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
      it('should parse this compressed public key', function() {
        var pk = PublicKey.fromDER(new Buffer('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
      it('should throw an error on this invalid public key', function() {
        (function() {
          PublicKey.fromDER(new Buffer('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        }).should.throw();
      });
  
    });
  
    describe('#fromString', function() {
  
      it('should parse this known valid public key', function() {
        var pk = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
    });
  
    describe('#fromX', function() {
  
      it('should create this known public key', function() {
        var x = BN.fromBuffer(new Buffer('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        var pk = PublicKey.fromX(true, x);
        pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
  
  
      it('should error because odd was not included as a param', function() {
        var x = BN.fromBuffer(new Buffer('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        (function() {
          return PublicKey.fromX(null, x);
        }).should.throw('Must specify whether y is odd or not (true or false)');
      });
  
    });
  
    describe('#toBuffer', function() {
  
      it('should return this compressed DER format', function() {
        var x = BN.fromBuffer(new Buffer('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        var pk = PublicKey.fromX(true, x);
        pk.toBuffer().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
      });
  
      it('should return this uncompressed DER format', function() {
        var x = BN.fromBuffer(new Buffer('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        var pk = PublicKey.fromX(true, x);
        pk.toBuffer().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
      });
  
    });
  
    describe('#toDER', function() {
  
      it('should return this compressed DER format', function() {
        var x = BN.fromBuffer(new Buffer('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
        var pk = PublicKey.fromX(true, x);
        pk.toDER().toString('hex').should.equal('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
      });
  
      it('should return this uncompressed DER format', function() {
        var pk = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
        pk.toDER().toString('hex').should.equal('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
      });
    });
  
    describe('#toAddress', function() {
  
      it('should output this known mainnet address correctly', function() {
        var pk = new PublicKey('03c87bd0e162f26969da8509cafcb7b8c8d202af30b928c582e263dd13ee9a9781');
        var address = pk.toAddress('livenet');
        address.toString().should.equal(AddrUtils.bitcoin_address_to_vcoin('1A6ut1tWnUq1SEQLMr4ttDh24wcbJ5o9TT'));
      });
  
      it('should output this known testnet address correctly', function() {
        var pk = new PublicKey('0293126ccc927c111b88a0fe09baa0eca719e2a3e087e8a5d1059163f5c566feef');
        var address = pk.toAddress('testnet');
        address.toString().should.equal(AddrUtils.bitcoin_address_to_vcoin('mtX8nPZZdJ8d3QNLRJ1oJTiEi26Sj6LQXS'));
      });
  
    });
  
    describe('hashes', function() {
  
      // wif private key, address
      // see: https://github.com/bitcoin/bitcoin/blob/master/src/test/key_tests.cpp#L20
      var data = [
        [AddrUtils.bitcoin_address_to_vcoin('5HxWvvfubhXpYYpS3tJkw6fq9jE9j18THftkZjHHfmFiWtmAbrj'), AddrUtils.bitcoin_address_to_vcoin('1QFqqMUD55ZV3PJEJZtaKCsQmjLT6JkjvJ')],
        [AddrUtils.bitcoin_address_to_vcoin('5KC4ejrDjv152FGwP386VD1i2NYc5KkfSMyv1nGy1VGDxGHqVY3'), AddrUtils.bitcoin_address_to_vcoin('1F5y5E5FMc5YzdJtB9hLaUe43GDxEKXENJ')],
        [AddrUtils.bitcoin_address_to_vcoin('Kwr371tjA9u2rFSMZjTNun2PXXP3WPZu2afRHTcta6KxEUdm1vEw'), AddrUtils.bitcoin_address_to_vcoin('1NoJrossxPBKfCHuJXT4HadJrXRE9Fxiqs')],
        [AddrUtils.bitcoin_address_to_vcoin('L3Hq7a8FEQwJkW1M2GNKDW28546Vp5miewcCzSqUD9kCAXrJdS3g'), AddrUtils.bitcoin_address_to_vcoin('1CRj2HyM1CXWzHAXLQtiGLyggNT9WQqsDs')]
      ];
      
      data.forEach(function(d){
        var publicKey = PrivateKey.fromWIF(d[0]).toPublicKey();
        var address = Address.fromString(d[1]);
        address.hashBuffer.should.deep.equal(publicKey._getID());
      });
      
    });
  
    describe('#toString', function() {
  
      it('should print this known public key', function() {
        var hex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a';
        var pk = PublicKey.fromString(hex);
        pk.toString().should.equal(hex);
      });
  
    });
  
    describe('#inspect', function() {
      it('should output known uncompressed pubkey for console', function() {
        var pubkey = PublicKey.fromString('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
        pubkey.inspect().should.equal('<PublicKey: 041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341, uncompressed>');
      });
  
      it('should output known compressed pubkey for console', function() {
        var pubkey = PublicKey.fromString('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
        pubkey.inspect().should.equal('<PublicKey: 031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a>');
      });
  
      it('should output known compressed pubkey with network for console', function() {
        var privkey = PrivateKey.fromWIF(AddrUtils.bitcoin_address_to_vcoin('L3T1s1TYP9oyhHpXgkyLoJFGniEgkv2Jhi138d7R2yJ9F4QdDU2m'));
        var pubkey = new PublicKey(privkey);
        pubkey.inspect().should.equal('<PublicKey: 03c87bd0e162f26969da8509cafcb7b8c8d202af30b928c582e263dd13ee9a9781>');
      });
  
    });
  
    describe('#validate', function() {
  
      it('should not have an error if pubkey is valid', function() {
        var hex = '031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a';
        expect(function() {
          return PublicKey.fromString(hex);
        }).to.not.throw();
      });
  
      it('should throw an error if pubkey is invalid', function() {
        var hex = '041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a0000000000000000000000000000000000000000000000000000000000000000';
        (function() {
          return PublicKey.fromString(hex);
        }).should.throw('Invalid y value for curve.');
      });
  
      it('should throw an error if pubkey is invalid', function() {
        var hex = '041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a00000000000000000000000000000000000000000000000000000000000000FF';
        (function() {
          return PublicKey.fromString(hex);
        }).should.throw('Invalid y value for curve.');
      });
  
      it('should throw an error if pubkey is infinity', function() {
        (function() {
          return new PublicKey(Point.getG().mul(Point.getN()));
        }).should.throw('Point cannot be equal to Infinity');
      });
  
    });
  
  });
  